/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-5d317bd [2022-03-19 02:34:28,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 02:34:28,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 02:34:28,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 02:34:28,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 02:34:28,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 02:34:28,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 02:34:28,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 02:34:28,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 02:34:28,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 02:34:28,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 02:34:28,304 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 02:34:28,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 02:34:28,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 02:34:28,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 02:34:28,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 02:34:28,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 02:34:28,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 02:34:28,306 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 02:34:28,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 02:34:28,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 02:34:28,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 02:34:28,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 02:34:28,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 02:34:28,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 02:34:28,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 02:34:28,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 02:34:28,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 02:34:28,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 02:34:28,308 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 02:34:28,308 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 02:34:28,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 02:34:28,308 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 02:34:28,308 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 02:34:28,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 02:34:28,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 02:34:28,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 02:34:28,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 02:34:28,540 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 02:34:28,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_1-1.c [2022-03-19 02:34:28,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489bd80b0/508399818f164006bf26d459e61311fd/FLAG0bca87ef9 [2022-03-19 02:34:28,929 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 02:34:28,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-1.c [2022-03-19 02:34:28,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489bd80b0/508399818f164006bf26d459e61311fd/FLAG0bca87ef9 [2022-03-19 02:34:28,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/489bd80b0/508399818f164006bf26d459e61311fd [2022-03-19 02:34:28,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 02:34:28,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 02:34:28,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 02:34:28,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 02:34:28,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 02:34:28,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 02:34:28" (1/1) ... [2022-03-19 02:34:28,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:28, skipping insertion in model container [2022-03-19 02:34:28,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 02:34:28" (1/1) ... [2022-03-19 02:34:28,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 02:34:28,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 02:34:29,109 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] [2022-03-19 02:34:29,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 02:34:29,123 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 02:34:29,132 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] [2022-03-19 02:34:29,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 02:34:29,144 INFO L208 MainTranslator]: Completed translation [2022-03-19 02:34:29,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29 WrapperNode [2022-03-19 02:34:29,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 02:34:29,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 02:34:29,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 02:34:29,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 02:34:29,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 02:34:29,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 02:34:29,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 02:34:29,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 02:34:29,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (1/1) ... [2022-03-19 02:34:29,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 02:34:29,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:29,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 02:34:29,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 02:34:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 02:34:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 02:34:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 02:34:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 02:34:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 02:34:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 02:34:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 02:34:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 02:34:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 02:34:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 02:34:29,289 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 02:34:29,290 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 02:34:29,351 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 02:34:29,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 02:34:29,356 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 02:34:29,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 02:34:29 BoogieIcfgContainer [2022-03-19 02:34:29,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 02:34:29,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 02:34:29,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 02:34:29,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 02:34:29,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 02:34:28" (1/3) ... [2022-03-19 02:34:29,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d390bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 02:34:29, skipping insertion in model container [2022-03-19 02:34:29,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 02:34:29" (2/3) ... [2022-03-19 02:34:29,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d390bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 02:34:29, skipping insertion in model container [2022-03-19 02:34:29,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 02:34:29" (3/3) ... [2022-03-19 02:34:29,365 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_1-1.c [2022-03-19 02:34:29,369 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 02:34:29,370 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 02:34:29,401 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 02:34:29,406 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 02:34:29,407 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 02:34:29,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 02:34:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 02:34:29,423 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:29,423 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:29,424 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:29,428 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2022-03-19 02:34:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1015665286] [2022-03-19 02:34:29,443 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 02:34:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 2 times [2022-03-19 02:34:29,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:29,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469889323] [2022-03-19 02:34:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:29,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:29,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:29,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469889323] [2022-03-19 02:34:29,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469889323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:29,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:29,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 02:34:29,609 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:29,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1015665286] [2022-03-19 02:34:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1015665286] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:29,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:29,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 02:34:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314131634] [2022-03-19 02:34:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:29,614 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 02:34:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 02:34:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 02:34:29,660 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:29,690 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-03-19 02:34:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 02:34:29,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-19 02:34:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:29,696 INFO L225 Difference]: With dead ends: 29 [2022-03-19 02:34:29,696 INFO L226 Difference]: Without dead ends: 12 [2022-03-19 02:34:29,698 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 02:34:29,701 INFO L912 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:29,701 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 02:34:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-19 02:34:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-19 02:34:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-19 02:34:29,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-19 02:34:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:29,727 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-19 02:34:29,727 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-19 02:34:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-19 02:34:29,728 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:29,728 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:29,728 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 02:34:29,743 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:29,744 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2022-03-19 02:34:29,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:29,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1910595682] [2022-03-19 02:34:29,745 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 02:34:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 2 times [2022-03-19 02:34:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:29,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350736560] [2022-03-19 02:34:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:29,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:29,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350736560] [2022-03-19 02:34:29,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350736560] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:29,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:29,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 02:34:29,873 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:29,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1910595682] [2022-03-19 02:34:29,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1910595682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:29,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:29,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 02:34:29,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73105888] [2022-03-19 02:34:29,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:29,875 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 02:34:29,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 02:34:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 02:34:29,876 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:29,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:29,925 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-19 02:34:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 02:34:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-19 02:34:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:29,927 INFO L225 Difference]: With dead ends: 18 [2022-03-19 02:34:29,927 INFO L226 Difference]: Without dead ends: 13 [2022-03-19 02:34:29,927 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 02:34:29,929 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:29,930 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 02:34:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-19 02:34:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-19 02:34:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-19 02:34:29,936 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-19 02:34:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:29,942 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-19 02:34:29,942 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:29,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-19 02:34:29,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-19 02:34:29,943 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:29,943 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:29,943 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 02:34:29,943 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2022-03-19 02:34:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:29,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1117615882] [2022-03-19 02:34:30,075 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:30,077 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1867307785, now seen corresponding path program 1 times [2022-03-19 02:34:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:30,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718266722] [2022-03-19 02:34:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:30,097 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)) [2022-03-19 02:34:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:30,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644862939] [2022-03-19 02:34:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:30,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:30,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:30,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 02:34:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:30,245 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:30,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 2 times [2022-03-19 02:34:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:30,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879863111] [2022-03-19 02:34:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:30,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879863111] [2022-03-19 02:34:30,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879863111] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:30,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474686632] [2022-03-19 02:34:30,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:30,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:30,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:30,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:30,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 02:34:30,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:30,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:30,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 02:34:30,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:30,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:30,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474686632] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:30,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:30,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-19 02:34:30,600 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:30,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1117615882] [2022-03-19 02:34:30,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1117615882] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:30,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:30,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 02:34:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037602221] [2022-03-19 02:34:30,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:30,601 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 02:34:30,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 02:34:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-19 02:34:30,603 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:30,643 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-03-19 02:34:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 02:34:30,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-19 02:34:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:30,644 INFO L225 Difference]: With dead ends: 19 [2022-03-19 02:34:30,644 INFO L226 Difference]: Without dead ends: 14 [2022-03-19 02:34:30,645 INFO L911 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 [2022-03-19 02:34:30,659 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:30,660 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 02:34:30,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-19 02:34:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-19 02:34:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-19 02:34:30,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-19 02:34:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:30,664 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-19 02:34:30,664 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-19 02:34:30,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-19 02:34:30,665 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:30,665 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:30,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:30,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:31,079 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3,SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:31,080 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:31,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 3 times [2022-03-19 02:34:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:31,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1761816158] [2022-03-19 02:34:31,173 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:31,174 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1808202441, now seen corresponding path program 1 times [2022-03-19 02:34:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:31,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179086383] [2022-03-19 02:34:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:31,182 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)) [2022-03-19 02:34:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:31,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266741722] [2022-03-19 02:34:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:31,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:31,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:31,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:31,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 02:34:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:31,272 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:31,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:31,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 4 times [2022-03-19 02:34:31,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:31,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431098128] [2022-03-19 02:34:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431098128] [2022-03-19 02:34:31,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431098128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021290326] [2022-03-19 02:34:31,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:34:31,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:31,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:31,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 02:34:31,384 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:34:31,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:31,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 02:34:31,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:31,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:31,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021290326] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:31,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:31,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-19 02:34:31,486 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:31,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1761816158] [2022-03-19 02:34:31,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1761816158] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:31,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:31,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 02:34:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891630283] [2022-03-19 02:34:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:31,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 02:34:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 02:34:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-03-19 02:34:31,488 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:31,532 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-19 02:34:31,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 02:34:31,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-19 02:34:31,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:31,533 INFO L225 Difference]: With dead ends: 20 [2022-03-19 02:34:31,533 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 02:34:31,534 INFO L911 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 [2022-03-19 02:34:31,537 INFO L912 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 [2022-03-19 02:34:31,538 INFO L913 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] [2022-03-19 02:34:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 02:34:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 02:34:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-19 02:34:31,546 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-19 02:34:31,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:31,547 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-19 02:34:31,547 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-19 02:34:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 02:34:31,548 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:31,548 INFO L500 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:31,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:31,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:31,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:31,972 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:31,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 5 times [2022-03-19 02:34:31,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:31,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [66449245] [2022-03-19 02:34:32,033 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:32,036 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1749097097, now seen corresponding path program 1 times [2022-03-19 02:34:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:32,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460517739] [2022-03-19 02:34:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:32,057 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)) [2022-03-19 02:34:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:32,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461728919] [2022-03-19 02:34:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:32,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:32,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:32,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-19 02:34:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:32,127 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:32,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 6 times [2022-03-19 02:34:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:32,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16401467] [2022-03-19 02:34:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:32,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16401467] [2022-03-19 02:34:32,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16401467] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:32,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292996245] [2022-03-19 02:34:32,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:34:32,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:32,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:32,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-19 02:34:32,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-19 02:34:32,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:32,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-19 02:34:32,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:32,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:32,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292996245] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:32,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:32,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 15 [2022-03-19 02:34:32,438 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:32,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [66449245] [2022-03-19 02:34:32,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [66449245] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:32,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:32,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 02:34:32,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181496796] [2022-03-19 02:34:32,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:32,439 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 02:34:32,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 02:34:32,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-03-19 02:34:32,440 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:32,508 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-03-19 02:34:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 02:34:32,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-19 02:34:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:32,509 INFO L225 Difference]: With dead ends: 21 [2022-03-19 02:34:32,509 INFO L226 Difference]: Without dead ends: 16 [2022-03-19 02:34:32,509 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-03-19 02:34:32,510 INFO L912 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 [2022-03-19 02:34:32,510 INFO L913 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] [2022-03-19 02:34:32,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-19 02:34:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-19 02:34:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:32,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-03-19 02:34:32,514 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-03-19 02:34:32,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:32,514 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-03-19 02:34:32,514 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:32,514 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-03-19 02:34:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-19 02:34:32,515 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:32,515 INFO L500 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:32,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:32,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:32,915 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:32,916 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 7 times [2022-03-19 02:34:32,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:32,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [577631044] [2022-03-19 02:34:32,992 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:32,993 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1689991753, now seen corresponding path program 1 times [2022-03-19 02:34:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:32,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567595378] [2022-03-19 02:34:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:33,000 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)) [2022-03-19 02:34:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:33,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640277406] [2022-03-19 02:34:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:33,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:33,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:33,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:33,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-19 02:34:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:33,103 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:33,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 8 times [2022-03-19 02:34:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:33,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995998777] [2022-03-19 02:34:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:33,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995998777] [2022-03-19 02:34:33,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995998777] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625712764] [2022-03-19 02:34:33,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:33,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:33,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:33,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:33,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-19 02:34:33,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:33,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-19 02:34:33,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:33,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:33,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625712764] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:33,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:33,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-19 02:34:33,459 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:33,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [577631044] [2022-03-19 02:34:33,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [577631044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:33,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:33,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 02:34:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670817206] [2022-03-19 02:34:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:33,461 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 02:34:33,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 02:34:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-19 02:34:33,462 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:33,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:33,541 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-03-19 02:34:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 02:34:33,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-19 02:34:33,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:33,543 INFO L225 Difference]: With dead ends: 22 [2022-03-19 02:34:33,543 INFO L226 Difference]: Without dead ends: 17 [2022-03-19 02:34:33,544 INFO L911 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 [2022-03-19 02:34:33,545 INFO L912 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 [2022-03-19 02:34:33,546 INFO L913 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] [2022-03-19 02:34:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-03-19 02:34:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-03-19 02:34:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-03-19 02:34:33,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2022-03-19 02:34:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:33,552 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-03-19 02:34:33,553 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-03-19 02:34:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-19 02:34:33,554 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:33,554 INFO L500 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:33,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:33,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-19 02:34:33,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8,SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:33,980 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 9 times [2022-03-19 02:34:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:33,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1015032422] [2022-03-19 02:34:34,276 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:34,276 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:34,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1630886409, now seen corresponding path program 1 times [2022-03-19 02:34:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:34,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448337535] [2022-03-19 02:34:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:34,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:34,282 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)) [2022-03-19 02:34:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:34,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904847881] [2022-03-19 02:34:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:34,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:34,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:34,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:34,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-19 02:34:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:34,360 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:34,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:34,376 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 10 times [2022-03-19 02:34:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:34,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054739848] [2022-03-19 02:34:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:34,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:34,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054739848] [2022-03-19 02:34:34,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054739848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:34,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492825358] [2022-03-19 02:34:34,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:34:34,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:34,482 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:34,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-19 02:34:34,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:34:34,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:34,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-19 02:34:34,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:34,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:34,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492825358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:34,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:34,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-03-19 02:34:34,721 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:34,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1015032422] [2022-03-19 02:34:34,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1015032422] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:34,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:34,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 02:34:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921987744] [2022-03-19 02:34:34,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:34,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 02:34:34,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 02:34:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-03-19 02:34:34,723 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:34,829 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-03-19 02:34:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 02:34:34,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-19 02:34:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:34,831 INFO L225 Difference]: With dead ends: 23 [2022-03-19 02:34:34,831 INFO L226 Difference]: Without dead ends: 18 [2022-03-19 02:34:34,831 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2022-03-19 02:34:34,832 INFO L912 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 [2022-03-19 02:34:34,832 INFO L913 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] [2022-03-19 02:34:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-19 02:34:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-19 02:34:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-03-19 02:34:34,836 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2022-03-19 02:34:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:34,836 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-03-19 02:34:34,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-03-19 02:34:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-19 02:34:34,837 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:34,837 INFO L500 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:34,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-19 02:34:35,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:35,237 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-19 02:34:35,238 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 11 times [2022-03-19 02:34:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:35,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [53377718] [2022-03-19 02:34:35,288 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:35,288 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1571781065, now seen corresponding path program 1 times [2022-03-19 02:34:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:35,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877838058] [2022-03-19 02:34:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:35,297 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)) [2022-03-19 02:34:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:35,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983949954] [2022-03-19 02:34:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:35,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:35,318 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:35,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-19 02:34:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:35,378 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:35,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 12 times [2022-03-19 02:34:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:35,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302425430] [2022-03-19 02:34:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:35,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:35,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302425430] [2022-03-19 02:34:35,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302425430] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:35,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454834143] [2022-03-19 02:34:35,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:34:35,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:35,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:35,510 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:35,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-19 02:34:35,560 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-19 02:34:35,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:35,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-19 02:34:35,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:35,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:35,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454834143] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:35,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 12] total 21 [2022-03-19 02:34:35,882 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:35,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [53377718] [2022-03-19 02:34:35,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [53377718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:35,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 02:34:35,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915176510] [2022-03-19 02:34:35,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:35,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 02:34:35,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:35,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 02:34:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-03-19 02:34:35,884 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:36,007 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-03-19 02:34:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 02:34:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-19 02:34:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:36,008 INFO L225 Difference]: With dead ends: 24 [2022-03-19 02:34:36,008 INFO L226 Difference]: Without dead ends: 19 [2022-03-19 02:34:36,009 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-03-19 02:34:36,009 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:36,009 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 02:34:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-03-19 02:34:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-03-19 02:34:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2022-03-19 02:34:36,013 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2022-03-19 02:34:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:36,014 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2022-03-19 02:34:36,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2022-03-19 02:34:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 02:34:36,014 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:36,014 INFO L500 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:36,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:36,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:36,420 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12,SelfDestructingSolverStorable13 [2022-03-19 02:34:36,420 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash -76826442, now seen corresponding path program 13 times [2022-03-19 02:34:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:36,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1864480264] [2022-03-19 02:34:36,661 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:36,662 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1512675721, now seen corresponding path program 1 times [2022-03-19 02:34:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:36,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70382979] [2022-03-19 02:34:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:36,667 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)) [2022-03-19 02:34:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:36,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76822893] [2022-03-19 02:34:36,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:36,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:36,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:36,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:36,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-19 02:34:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:36,743 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:36,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -76826442, now seen corresponding path program 14 times [2022-03-19 02:34:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:36,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994351510] [2022-03-19 02:34:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:36,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994351510] [2022-03-19 02:34:36,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994351510] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721590586] [2022-03-19 02:34:36,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:36,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:36,888 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:36,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-19 02:34:36,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:36,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:36,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 02:34:36,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:37,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:37,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721590586] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:37,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:37,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 20 [2022-03-19 02:34:37,167 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:37,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1864480264] [2022-03-19 02:34:37,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1864480264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:37,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:37,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 02:34:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399947151] [2022-03-19 02:34:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:37,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 02:34:37,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:37,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 02:34:37,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-03-19 02:34:37,169 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:37,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:37,292 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-03-19 02:34:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 02:34:37,292 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-19 02:34:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:37,293 INFO L225 Difference]: With dead ends: 25 [2022-03-19 02:34:37,293 INFO L226 Difference]: Without dead ends: 20 [2022-03-19 02:34:37,294 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2022-03-19 02:34:37,294 INFO L912 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 [2022-03-19 02:34:37,294 INFO L913 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] [2022-03-19 02:34:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-03-19 02:34:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-03-19 02:34:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-03-19 02:34:37,298 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2022-03-19 02:34:37,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:37,298 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-03-19 02:34:37,299 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-03-19 02:34:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-19 02:34:37,299 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:37,299 INFO L500 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:37,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:37,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:37,700 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14,SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:37,700 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:37,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1949808860, now seen corresponding path program 15 times [2022-03-19 02:34:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:37,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1684079667] [2022-03-19 02:34:37,739 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:37,740 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1453570377, now seen corresponding path program 1 times [2022-03-19 02:34:37,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196760173] [2022-03-19 02:34:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:37,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:37,745 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)) [2022-03-19 02:34:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:37,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026993146] [2022-03-19 02:34:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:37,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:37,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:37,754 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:37,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-19 02:34:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:37,809 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:37,824 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1949808860, now seen corresponding path program 16 times [2022-03-19 02:34:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:37,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517197962] [2022-03-19 02:34:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:37,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:37,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517197962] [2022-03-19 02:34:37,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517197962] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:37,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769857831] [2022-03-19 02:34:37,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:34:37,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:37,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:37,952 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:37,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-19 02:34:37,981 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:34:37,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:37,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-19 02:34:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:38,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:38,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769857831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:38,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:38,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2022-03-19 02:34:38,241 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:38,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1684079667] [2022-03-19 02:34:38,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1684079667] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:38,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:38,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 02:34:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949606447] [2022-03-19 02:34:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:38,242 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 02:34:38,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 02:34:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2022-03-19 02:34:38,243 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:38,397 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2022-03-19 02:34:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 02:34:38,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-03-19 02:34:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:38,398 INFO L225 Difference]: With dead ends: 26 [2022-03-19 02:34:38,398 INFO L226 Difference]: Without dead ends: 21 [2022-03-19 02:34:38,399 INFO L911 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 [2022-03-19 02:34:38,399 INFO L912 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 [2022-03-19 02:34:38,400 INFO L913 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] [2022-03-19 02:34:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-03-19 02:34:38,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-03-19 02:34:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-03-19 02:34:38,403 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2022-03-19 02:34:38,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:38,403 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-03-19 02:34:38,403 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-03-19 02:34:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 02:34:38,404 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:38,404 INFO L500 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:38,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:38,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:38,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16,SelfDestructingSolverStorable17 [2022-03-19 02:34:38,805 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 350993782, now seen corresponding path program 17 times [2022-03-19 02:34:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:38,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1635409750] [2022-03-19 02:34:38,850 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:38,851 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1394465033, now seen corresponding path program 1 times [2022-03-19 02:34:38,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:38,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233412265] [2022-03-19 02:34:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:38,855 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)) [2022-03-19 02:34:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:38,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971911759] [2022-03-19 02:34:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:38,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:38,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:38,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:38,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-19 02:34:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:38,924 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:38,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:38,934 INFO L85 PathProgramCache]: Analyzing trace with hash 350993782, now seen corresponding path program 18 times [2022-03-19 02:34:38,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:38,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504822979] [2022-03-19 02:34:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:38,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:39,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:39,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504822979] [2022-03-19 02:34:39,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504822979] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:39,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573263033] [2022-03-19 02:34:39,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:34:39,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:39,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:39,080 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:39,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-19 02:34:39,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-19 02:34:39,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-19 02:34:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:39,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:39,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573263033] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:39,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:39,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 24 [2022-03-19 02:34:39,453 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:39,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1635409750] [2022-03-19 02:34:39,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1635409750] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:39,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:39,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 02:34:39,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753253487] [2022-03-19 02:34:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:39,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 02:34:39,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 02:34:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2022-03-19 02:34:39,455 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:39,638 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-03-19 02:34:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 02:34:39,638 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-03-19 02:34:39,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:39,639 INFO L225 Difference]: With dead ends: 27 [2022-03-19 02:34:39,639 INFO L226 Difference]: Without dead ends: 22 [2022-03-19 02:34:39,640 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=799, Unknown=0, NotChecked=0, Total=1122 [2022-03-19 02:34:39,640 INFO L912 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:39,640 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 02:34:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-19 02:34:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-19 02:34:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-03-19 02:34:39,644 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2022-03-19 02:34:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:39,644 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-03-19 02:34:39,644 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-03-19 02:34:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-19 02:34:39,645 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:39,645 INFO L500 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:39,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:39,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:40,054 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:40,054 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1967633380, now seen corresponding path program 19 times [2022-03-19 02:34:40,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:40,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1253765518] [2022-03-19 02:34:40,088 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:40,088 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1335359689, now seen corresponding path program 1 times [2022-03-19 02:34:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:40,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393425156] [2022-03-19 02:34:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:40,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:40,104 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)) [2022-03-19 02:34:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:40,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720145875] [2022-03-19 02:34:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:40,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:40,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:40,111 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:40,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-19 02:34:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:40,187 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:40,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1967633380, now seen corresponding path program 20 times [2022-03-19 02:34:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:40,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902987673] [2022-03-19 02:34:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902987673] [2022-03-19 02:34:40,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902987673] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:40,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731807059] [2022-03-19 02:34:40,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:40,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:40,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:40,345 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:40,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-19 02:34:40,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:40,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:40,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-19 02:34:40,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:40,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:40,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731807059] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:40,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:40,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-03-19 02:34:40,691 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:40,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1253765518] [2022-03-19 02:34:40,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1253765518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:40,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:40,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 02:34:40,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756641749] [2022-03-19 02:34:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:40,692 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 02:34:40,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 02:34:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-03-19 02:34:40,693 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:40,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:40,872 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-03-19 02:34:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 02:34:40,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-19 02:34:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:40,873 INFO L225 Difference]: With dead ends: 28 [2022-03-19 02:34:40,874 INFO L226 Difference]: Without dead ends: 23 [2022-03-19 02:34:40,874 INFO L911 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 [2022-03-19 02:34:40,875 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:40,875 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 02:34:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-19 02:34:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-19 02:34:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-03-19 02:34:40,878 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2022-03-19 02:34:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:40,879 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-03-19 02:34:40,879 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-03-19 02:34:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-19 02:34:40,879 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:40,879 INFO L500 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:40,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:41,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:41,294 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20,SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:41,294 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash -830631370, now seen corresponding path program 21 times [2022-03-19 02:34:41,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:41,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [560317804] [2022-03-19 02:34:41,329 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:41,329 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1276254345, now seen corresponding path program 1 times [2022-03-19 02:34:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:41,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94327098] [2022-03-19 02:34:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:41,333 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)) [2022-03-19 02:34:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:41,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082935495] [2022-03-19 02:34:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:41,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:41,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:41,339 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:41,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-19 02:34:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:41,446 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:41,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -830631370, now seen corresponding path program 22 times [2022-03-19 02:34:41,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:41,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649240148] [2022-03-19 02:34:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:41,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:41,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:41,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649240148] [2022-03-19 02:34:41,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649240148] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:41,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513371255] [2022-03-19 02:34:41,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:34:41,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:41,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:41,622 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:41,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-19 02:34:41,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:34:41,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:41,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-19 02:34:41,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:41,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:42,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513371255] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:42,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:42,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 28 [2022-03-19 02:34:42,093 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:42,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [560317804] [2022-03-19 02:34:42,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [560317804] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:42,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:42,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 02:34:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622745510] [2022-03-19 02:34:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:42,093 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 02:34:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 02:34:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2022-03-19 02:34:42,094 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:42,304 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-03-19 02:34:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 02:34:42,305 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-03-19 02:34:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:42,305 INFO L225 Difference]: With dead ends: 29 [2022-03-19 02:34:42,305 INFO L226 Difference]: Without dead ends: 24 [2022-03-19 02:34:42,306 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=1125, Unknown=0, NotChecked=0, Total=1560 [2022-03-19 02:34:42,307 INFO L912 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 [2022-03-19 02:34:42,307 INFO L913 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] [2022-03-19 02:34:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-19 02:34:42,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-03-19 02:34:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-03-19 02:34:42,311 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2022-03-19 02:34:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:42,311 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-03-19 02:34:42,311 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-03-19 02:34:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-19 02:34:42,312 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:42,312 INFO L500 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:42,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:42,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-19 02:34:42,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22,SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:42,719 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash 56692572, now seen corresponding path program 23 times [2022-03-19 02:34:42,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:42,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1405446857] [2022-03-19 02:34:42,753 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:42,754 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1217149001, now seen corresponding path program 1 times [2022-03-19 02:34:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:42,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716624742] [2022-03-19 02:34:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:42,757 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)) [2022-03-19 02:34:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:42,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504815092] [2022-03-19 02:34:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:42,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:42,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:42,764 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:42,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-19 02:34:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:42,816 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:42,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 56692572, now seen corresponding path program 24 times [2022-03-19 02:34:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:42,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460897771] [2022-03-19 02:34:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:43,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:43,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460897771] [2022-03-19 02:34:43,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460897771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:43,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510704510] [2022-03-19 02:34:43,032 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:34:43,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:43,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:43,033 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:43,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-19 02:34:43,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-19 02:34:43,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:43,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-19 02:34:43,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:43,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:43,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510704510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:43,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:43,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 18] total 33 [2022-03-19 02:34:43,784 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:43,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1405446857] [2022-03-19 02:34:43,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1405446857] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:43,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:43,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 02:34:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598956987] [2022-03-19 02:34:43,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:43,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 02:34:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 02:34:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2022-03-19 02:34:43,785 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:44,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:44,033 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-03-19 02:34:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 02:34:44,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-19 02:34:44,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:44,034 INFO L225 Difference]: With dead ends: 30 [2022-03-19 02:34:44,034 INFO L226 Difference]: Without dead ends: 25 [2022-03-19 02:34:44,034 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2022-03-19 02:34:44,035 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:44,035 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 02:34:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-03-19 02:34:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-03-19 02:34:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-03-19 02:34:44,039 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2022-03-19 02:34:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:44,039 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-03-19 02:34:44,039 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:44,039 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-03-19 02:34:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-19 02:34:44,040 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:44,040 INFO L500 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:44,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:44,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-19 02:34:44,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24,SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:44,444 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:44,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930998, now seen corresponding path program 25 times [2022-03-19 02:34:44,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:44,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1068300447] [2022-03-19 02:34:44,472 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:44,472 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1158043657, now seen corresponding path program 1 times [2022-03-19 02:34:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:44,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133649832] [2022-03-19 02:34:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:44,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:44,476 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)) [2022-03-19 02:34:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:44,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595539924] [2022-03-19 02:34:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:44,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:44,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:44,482 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:44,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-19 02:34:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:44,545 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:44,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:44,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1793930998, now seen corresponding path program 26 times [2022-03-19 02:34:44,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:44,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019254964] [2022-03-19 02:34:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:44,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:44,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019254964] [2022-03-19 02:34:44,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019254964] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:44,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439361544] [2022-03-19 02:34:44,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:44,752 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:44,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-19 02:34:44,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:44,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:44,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-19 02:34:44,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:44,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:45,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439361544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:45,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:45,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 32 [2022-03-19 02:34:45,302 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:45,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1068300447] [2022-03-19 02:34:45,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1068300447] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:45,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:45,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 02:34:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139029772] [2022-03-19 02:34:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:45,303 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 02:34:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 02:34:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=707, Unknown=0, NotChecked=0, Total=992 [2022-03-19 02:34:45,304 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:45,563 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-03-19 02:34:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 02:34:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-03-19 02:34:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:45,563 INFO L225 Difference]: With dead ends: 31 [2022-03-19 02:34:45,563 INFO L226 Difference]: Without dead ends: 26 [2022-03-19 02:34:45,564 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=563, Invalid=1507, Unknown=0, NotChecked=0, Total=2070 [2022-03-19 02:34:45,565 INFO L912 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 [2022-03-19 02:34:45,565 INFO L913 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] [2022-03-19 02:34:45,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-19 02:34:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-03-19 02:34:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2022-03-19 02:34:45,569 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2022-03-19 02:34:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:45,569 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2022-03-19 02:34:45,569 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2022-03-19 02:34:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-19 02:34:45,569 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:45,569 INFO L500 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:45,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:45,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:45,970 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26,SelfDestructingSolverStorable27 [2022-03-19 02:34:45,970 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:45,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash -186252644, now seen corresponding path program 27 times [2022-03-19 02:34:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1430276319] [2022-03-19 02:34:46,010 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:46,010 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1098938313, now seen corresponding path program 1 times [2022-03-19 02:34:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:46,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210793398] [2022-03-19 02:34:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:46,015 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)) [2022-03-19 02:34:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:46,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280009772] [2022-03-19 02:34:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:46,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:46,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:46,030 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:46,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-19 02:34:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:46,088 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:46,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash -186252644, now seen corresponding path program 28 times [2022-03-19 02:34:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:46,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325208480] [2022-03-19 02:34:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:46,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325208480] [2022-03-19 02:34:46,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325208480] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:46,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306852195] [2022-03-19 02:34:46,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:34:46,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:46,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:46,343 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:46,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-19 02:34:46,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:34:46,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:46,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-19 02:34:46,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:46,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:46,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306852195] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:46,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:46,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2022-03-19 02:34:46,870 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:46,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1430276319] [2022-03-19 02:34:46,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1430276319] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:46,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:46,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 02:34:46,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829245398] [2022-03-19 02:34:46,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:46,871 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 02:34:46,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 02:34:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2022-03-19 02:34:46,872 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:47,132 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2022-03-19 02:34:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 02:34:47,132 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-03-19 02:34:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:47,132 INFO L225 Difference]: With dead ends: 32 [2022-03-19 02:34:47,133 INFO L226 Difference]: Without dead ends: 27 [2022-03-19 02:34:47,134 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=1719, Unknown=0, NotChecked=0, Total=2352 [2022-03-19 02:34:47,134 INFO L912 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 [2022-03-19 02:34:47,134 INFO L913 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] [2022-03-19 02:34:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-19 02:34:47,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-19 02:34:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-03-19 02:34:47,138 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2022-03-19 02:34:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:47,138 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-03-19 02:34:47,139 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 17 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-03-19 02:34:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-19 02:34:47,139 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:47,139 INFO L500 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:47,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:47,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:47,545 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-19 02:34:47,545 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:47,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1442403402, now seen corresponding path program 29 times [2022-03-19 02:34:47,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:47,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1586059849] [2022-03-19 02:34:47,581 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:47,581 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1039832969, now seen corresponding path program 1 times [2022-03-19 02:34:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:47,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460765106] [2022-03-19 02:34:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:47,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:47,584 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)) [2022-03-19 02:34:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:47,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513978751] [2022-03-19 02:34:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:47,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:47,590 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:47,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-19 02:34:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:47,641 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:47,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1442403402, now seen corresponding path program 30 times [2022-03-19 02:34:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:47,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13893743] [2022-03-19 02:34:47,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:47,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:47,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:47,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13893743] [2022-03-19 02:34:47,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13893743] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:47,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415378059] [2022-03-19 02:34:47,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:34:47,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:47,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:47,876 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:47,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-19 02:34:47,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-03-19 02:34:47,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:47,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-19 02:34:47,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:48,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:48,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415378059] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:48,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:48,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 21] total 39 [2022-03-19 02:34:48,717 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:48,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1586059849] [2022-03-19 02:34:48,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1586059849] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:48,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:48,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 02:34:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351197586] [2022-03-19 02:34:48,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:48,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 02:34:48,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:48,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 02:34:48,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2022-03-19 02:34:48,718 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:49,015 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-03-19 02:34:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 02:34:49,015 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-03-19 02:34:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:49,016 INFO L225 Difference]: With dead ends: 33 [2022-03-19 02:34:49,016 INFO L226 Difference]: Without dead ends: 28 [2022-03-19 02:34:49,017 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=729, Invalid=2241, Unknown=0, NotChecked=0, Total=2970 [2022-03-19 02:34:49,017 INFO L912 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 [2022-03-19 02:34:49,017 INFO L913 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] [2022-03-19 02:34:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-03-19 02:34:49,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-03-19 02:34:49,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-03-19 02:34:49,021 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2022-03-19 02:34:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:49,021 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-03-19 02:34:49,021 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-03-19 02:34:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-19 02:34:49,022 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:49,022 INFO L500 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:49,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:49,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-19 02:34:49,427 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30,SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:49,428 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1728371236, now seen corresponding path program 31 times [2022-03-19 02:34:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:49,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [199517244] [2022-03-19 02:34:49,483 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:49,484 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:49,484 INFO L85 PathProgramCache]: Analyzing trace with hash -980727625, now seen corresponding path program 1 times [2022-03-19 02:34:49,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:49,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006601503] [2022-03-19 02:34:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:49,488 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)) [2022-03-19 02:34:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:49,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326593006] [2022-03-19 02:34:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:49,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:49,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:49,494 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:49,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-19 02:34:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:49,548 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:49,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1728371236, now seen corresponding path program 32 times [2022-03-19 02:34:49,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:49,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283175344] [2022-03-19 02:34:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:49,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:49,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283175344] [2022-03-19 02:34:49,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283175344] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:49,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597848914] [2022-03-19 02:34:49,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:49,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:49,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:49,847 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:49,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-19 02:34:49,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:49,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:49,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-19 02:34:49,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:50,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:50,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597848914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:50,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:50,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 38 [2022-03-19 02:34:50,531 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:50,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [199517244] [2022-03-19 02:34:50,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [199517244] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:50,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:50,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 02:34:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008553496] [2022-03-19 02:34:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:50,531 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 02:34:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 02:34:50,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=1010, Unknown=0, NotChecked=0, Total=1406 [2022-03-19 02:34:50,532 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:50,888 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-03-19 02:34:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 02:34:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-03-19 02:34:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:50,889 INFO L225 Difference]: With dead ends: 34 [2022-03-19 02:34:50,889 INFO L226 Difference]: Without dead ends: 29 [2022-03-19 02:34:50,890 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=785, Invalid=2185, Unknown=0, NotChecked=0, Total=2970 [2022-03-19 02:34:50,890 INFO L912 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:50,890 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 02:34:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-19 02:34:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-19 02:34:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-03-19 02:34:50,894 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2022-03-19 02:34:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:50,895 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-03-19 02:34:50,895 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.15) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-03-19 02:34:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-19 02:34:50,895 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:50,895 INFO L500 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:50,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:51,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:51,300 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:51,301 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2003439498, now seen corresponding path program 33 times [2022-03-19 02:34:51,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:51,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [939202885] [2022-03-19 02:34:51,336 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:51,336 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:51,336 INFO L85 PathProgramCache]: Analyzing trace with hash -921622281, now seen corresponding path program 1 times [2022-03-19 02:34:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:51,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611709825] [2022-03-19 02:34:51,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:51,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:51,342 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)) [2022-03-19 02:34:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:51,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062487365] [2022-03-19 02:34:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:51,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:51,351 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:51,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-19 02:34:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:51,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:51,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2003439498, now seen corresponding path program 34 times [2022-03-19 02:34:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:51,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177125210] [2022-03-19 02:34:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:51,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177125210] [2022-03-19 02:34:51,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177125210] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:51,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812432019] [2022-03-19 02:34:51,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:34:51,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:51,672 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:51,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-19 02:34:51,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:34:51,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:51,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-19 02:34:51,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:51,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:52,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812432019] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:52,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:52,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 40 [2022-03-19 02:34:52,355 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:52,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [939202885] [2022-03-19 02:34:52,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [939202885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:52,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:52,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 02:34:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897594076] [2022-03-19 02:34:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:52,355 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 02:34:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 02:34:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=1123, Unknown=0, NotChecked=0, Total=1560 [2022-03-19 02:34:52,357 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:52,761 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-03-19 02:34:52,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 02:34:52,761 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-03-19 02:34:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:52,762 INFO L225 Difference]: With dead ends: 35 [2022-03-19 02:34:52,762 INFO L226 Difference]: Without dead ends: 30 [2022-03-19 02:34:52,763 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=867, Invalid=2439, Unknown=0, NotChecked=0, Total=3306 [2022-03-19 02:34:52,763 INFO L912 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:52,764 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 02:34:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-19 02:34:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-03-19 02:34:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-03-19 02:34:52,769 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2022-03-19 02:34:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:52,769 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-03-19 02:34:52,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-03-19 02:34:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-19 02:34:52,770 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:52,770 INFO L500 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:52,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:52,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:53,170 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34,SelfDestructingSolverStorable35 [2022-03-19 02:34:53,171 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1940621028, now seen corresponding path program 35 times [2022-03-19 02:34:53,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:53,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [295526023] [2022-03-19 02:34:53,202 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:53,202 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:53,202 INFO L85 PathProgramCache]: Analyzing trace with hash -862516937, now seen corresponding path program 1 times [2022-03-19 02:34:53,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:53,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677627596] [2022-03-19 02:34:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:53,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:53,205 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)) [2022-03-19 02:34:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:53,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23761346] [2022-03-19 02:34:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:53,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:53,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:53,211 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:53,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-19 02:34:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:53,256 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:53,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1940621028, now seen corresponding path program 36 times [2022-03-19 02:34:53,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339764551] [2022-03-19 02:34:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:53,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339764551] [2022-03-19 02:34:53,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339764551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:53,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86339979] [2022-03-19 02:34:53,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:34:53,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:53,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:53,535 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:53,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-19 02:34:53,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-03-19 02:34:53,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:53,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-19 02:34:53,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:53,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:56,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86339979] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:56,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 24] total 45 [2022-03-19 02:34:56,523 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:56,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [295526023] [2022-03-19 02:34:56,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [295526023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:56,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:56,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-19 02:34:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35187611] [2022-03-19 02:34:56,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:56,524 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-19 02:34:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-19 02:34:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1475, Unknown=0, NotChecked=0, Total=1980 [2022-03-19 02:34:56,525 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:56,955 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-03-19 02:34:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 02:34:56,956 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-03-19 02:34:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:56,956 INFO L225 Difference]: With dead ends: 36 [2022-03-19 02:34:56,956 INFO L226 Difference]: Without dead ends: 31 [2022-03-19 02:34:56,957 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=978, Invalid=3054, Unknown=0, NotChecked=0, Total=4032 [2022-03-19 02:34:56,958 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-19 02:34:56,958 INFO L913 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] [2022-03-19 02:34:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-19 02:34:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-03-19 02:34:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-03-19 02:34:56,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2022-03-19 02:34:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:56,962 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-03-19 02:34:56,962 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 21 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-03-19 02:34:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-19 02:34:56,963 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:56,963 INFO L500 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:56,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:57,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-19 02:34:57,363 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36,SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:57,364 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:57,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:57,364 INFO L85 PathProgramCache]: Analyzing trace with hash 6751542, now seen corresponding path program 37 times [2022-03-19 02:34:57,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [711348134] [2022-03-19 02:34:57,418 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:34:57,418 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:34:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash -803411593, now seen corresponding path program 1 times [2022-03-19 02:34:57,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:57,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425081602] [2022-03-19 02:34:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:57,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:57,422 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)) [2022-03-19 02:34:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:34:57,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962067900] [2022-03-19 02:34:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:57,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:57,428 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:57,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-19 02:34:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:57,486 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:34:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:34:57,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:34:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 6751542, now seen corresponding path program 38 times [2022-03-19 02:34:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:34:57,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787090982] [2022-03-19 02:34:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:34:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:34:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:34:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:34:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:57,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:34:57,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787090982] [2022-03-19 02:34:57,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787090982] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:34:57,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694466587] [2022-03-19 02:34:57,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:34:57,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:34:57,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:34:57,822 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:34:57,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-19 02:34:57,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:34:57,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:34:57,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-19 02:34:57,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:34:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:58,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:34:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:34:58,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694466587] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:34:58,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:34:58,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 44 [2022-03-19 02:34:58,710 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:34:58,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [711348134] [2022-03-19 02:34:58,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [711348134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:34:58,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:34:58,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 02:34:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132694082] [2022-03-19 02:34:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:34:58,711 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-19 02:34:58,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-19 02:34:58,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=1367, Unknown=0, NotChecked=0, Total=1892 [2022-03-19 02:34:58,712 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:34:59,160 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2022-03-19 02:34:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-19 02:34:59,161 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-03-19 02:34:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:34:59,161 INFO L225 Difference]: With dead ends: 37 [2022-03-19 02:34:59,161 INFO L226 Difference]: Without dead ends: 32 [2022-03-19 02:34:59,162 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1043, Invalid=2989, Unknown=0, NotChecked=0, Total=4032 [2022-03-19 02:34:59,163 INFO L912 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, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 02:34:59,163 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 43 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 02:34:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-19 02:34:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-19 02:34:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2022-03-19 02:34:59,167 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2022-03-19 02:34:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:34:59,167 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2022-03-19 02:34:59,167 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:34:59,167 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2022-03-19 02:34:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 02:34:59,168 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:34:59,168 INFO L500 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:34:59,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:59,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-19 02:34:59,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38,SelfDestructingSolverStorable39 [2022-03-19 02:34:59,576 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:34:59,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:34:59,576 INFO L85 PathProgramCache]: Analyzing trace with hash 245759068, now seen corresponding path program 39 times [2022-03-19 02:34:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:34:59,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1425486131] [2022-03-19 02:35:00,582 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:00,582 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash -744306249, now seen corresponding path program 1 times [2022-03-19 02:35:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:00,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593012661] [2022-03-19 02:35:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:00,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:00,586 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)) [2022-03-19 02:35:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:00,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665898609] [2022-03-19 02:35:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:00,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:00,596 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:00,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-19 02:35:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:00,639 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:00,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash 245759068, now seen corresponding path program 40 times [2022-03-19 02:35:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677144665] [2022-03-19 02:35:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:00,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677144665] [2022-03-19 02:35:00,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677144665] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461249937] [2022-03-19 02:35:00,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:35:00,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:00,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:00,984 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:00,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-19 02:35:01,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:35:01,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:01,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-19 02:35:01,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:01,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:01,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461249937] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:01,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:01,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 46 [2022-03-19 02:35:01,955 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:01,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1425486131] [2022-03-19 02:35:01,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1425486131] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:01,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:01,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-03-19 02:35:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013062550] [2022-03-19 02:35:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:01,955 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-19 02:35:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-19 02:35:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=1498, Unknown=0, NotChecked=0, Total=2070 [2022-03-19 02:35:01,957 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:02,462 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2022-03-19 02:35:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-19 02:35:02,464 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-03-19 02:35:02,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:02,464 INFO L225 Difference]: With dead ends: 38 [2022-03-19 02:35:02,464 INFO L226 Difference]: Without dead ends: 33 [2022-03-19 02:35:02,465 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1137, Invalid=3285, Unknown=0, NotChecked=0, Total=4422 [2022-03-19 02:35:02,466 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-03-19 02:35:02,466 INFO L913 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] [2022-03-19 02:35:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-19 02:35:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-19 02:35:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2022-03-19 02:35:02,470 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2022-03-19 02:35:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:02,470 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2022-03-19 02:35:02,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2022-03-19 02:35:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-19 02:35:02,471 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:02,471 INFO L500 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:02,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:02,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-03-19 02:35:02,883 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-03-19 02:35:02,884 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -934942218, now seen corresponding path program 41 times [2022-03-19 02:35:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1198408497] [2022-03-19 02:35:02,936 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:02,936 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash -685200905, now seen corresponding path program 1 times [2022-03-19 02:35:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:02,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566585543] [2022-03-19 02:35:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:02,940 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)) [2022-03-19 02:35:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:02,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383457521] [2022-03-19 02:35:02,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:02,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:02,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:02,945 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:02,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-19 02:35:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:02,993 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:03,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:03,003 INFO L85 PathProgramCache]: Analyzing trace with hash -934942218, now seen corresponding path program 42 times [2022-03-19 02:35:03,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:03,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172738770] [2022-03-19 02:35:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:03,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172738770] [2022-03-19 02:35:03,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172738770] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985447758] [2022-03-19 02:35:03,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:35:03,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:03,376 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:03,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-19 02:35:03,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-03-19 02:35:03,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:03,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-19 02:35:03,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:03,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:04,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985447758] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:04,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:04,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 27] total 51 [2022-03-19 02:35:04,815 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1198408497] [2022-03-19 02:35:04,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1198408497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:04,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:04,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-19 02:35:04,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300380799] [2022-03-19 02:35:04,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:04,816 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-19 02:35:04,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-19 02:35:04,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1901, Unknown=0, NotChecked=0, Total=2550 [2022-03-19 02:35:04,817 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:05,370 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2022-03-19 02:35:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-19 02:35:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-03-19 02:35:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:05,371 INFO L225 Difference]: With dead ends: 39 [2022-03-19 02:35:05,371 INFO L226 Difference]: Without dead ends: 34 [2022-03-19 02:35:05,372 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2022-03-19 02:35:05,373 INFO L912 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 [2022-03-19 02:35:05,373 INFO L913 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] [2022-03-19 02:35:05,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-19 02:35:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-19 02:35:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-03-19 02:35:05,377 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2022-03-19 02:35:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:05,377 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-03-19 02:35:05,377 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-03-19 02:35:05,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-19 02:35:05,378 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:05,378 INFO L500 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:05,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:05,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-03-19 02:35:05,783 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:05,783 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:05,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:05,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1118023580, now seen corresponding path program 43 times [2022-03-19 02:35:05,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:05,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1082725071] [2022-03-19 02:35:05,819 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:05,820 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -626095561, now seen corresponding path program 1 times [2022-03-19 02:35:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:05,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269915218] [2022-03-19 02:35:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:05,822 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)) [2022-03-19 02:35:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:05,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156699938] [2022-03-19 02:35:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:05,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:05,828 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:05,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-19 02:35:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:05,887 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:05,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1118023580, now seen corresponding path program 44 times [2022-03-19 02:35:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:05,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123598330] [2022-03-19 02:35:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:06,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123598330] [2022-03-19 02:35:06,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123598330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422369206] [2022-03-19 02:35:06,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:35:06,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:06,294 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:06,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-19 02:35:06,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:35:06,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:06,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-19 02:35:06,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:06,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:07,322 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:07,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422369206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:07,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:07,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-03-19 02:35:07,323 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:07,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1082725071] [2022-03-19 02:35:07,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1082725071] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:07,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:07,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-03-19 02:35:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81481603] [2022-03-19 02:35:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:07,323 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-19 02:35:07,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-19 02:35:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-03-19 02:35:07,324 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:07,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:07,823 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2022-03-19 02:35:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-19 02:35:07,824 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-03-19 02:35:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:07,824 INFO L225 Difference]: With dead ends: 40 [2022-03-19 02:35:07,824 INFO L226 Difference]: Without dead ends: 35 [2022-03-19 02:35:07,825 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1337, Invalid=3919, Unknown=0, NotChecked=0, Total=5256 [2022-03-19 02:35:07,825 INFO L912 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 [2022-03-19 02:35:07,826 INFO L913 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] [2022-03-19 02:35:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-19 02:35:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-19 02:35:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:07,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-03-19 02:35:07,833 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2022-03-19 02:35:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:07,833 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-03-19 02:35:07,833 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-03-19 02:35:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-19 02:35:07,833 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:07,833 INFO L500 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:07,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:08,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:08,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44,SelfDestructingSolverStorable45 [2022-03-19 02:35:08,236 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:08,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash 335453878, now seen corresponding path program 45 times [2022-03-19 02:35:08,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:08,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [122350193] [2022-03-19 02:35:08,260 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:08,261 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash -566990217, now seen corresponding path program 1 times [2022-03-19 02:35:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:08,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056861131] [2022-03-19 02:35:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:08,264 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)) [2022-03-19 02:35:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:08,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930654238] [2022-03-19 02:35:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:08,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:08,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:08,270 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:08,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-19 02:35:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:08,317 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:08,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash 335453878, now seen corresponding path program 46 times [2022-03-19 02:35:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:08,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697334613] [2022-03-19 02:35:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:08,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697334613] [2022-03-19 02:35:08,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697334613] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:08,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394224421] [2022-03-19 02:35:08,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:35:08,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:08,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:08,691 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:08,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-19 02:35:08,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:35:08,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:08,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-19 02:35:08,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:08,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:09,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394224421] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:09,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:09,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 52 [2022-03-19 02:35:09,791 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:09,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [122350193] [2022-03-19 02:35:09,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [122350193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:09,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:09,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-03-19 02:35:09,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866256537] [2022-03-19 02:35:09,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:09,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-19 02:35:09,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:09,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-19 02:35:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-03-19 02:35:09,792 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:10,419 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2022-03-19 02:35:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-19 02:35:10,419 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-03-19 02:35:10,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:10,420 INFO L225 Difference]: With dead ends: 41 [2022-03-19 02:35:10,420 INFO L226 Difference]: Without dead ends: 36 [2022-03-19 02:35:10,421 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1443, Invalid=4257, Unknown=0, NotChecked=0, Total=5700 [2022-03-19 02:35:10,421 INFO L912 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 02:35:10,421 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 02:35:10,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-19 02:35:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-19 02:35:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2022-03-19 02:35:10,426 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2022-03-19 02:35:10,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:10,426 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2022-03-19 02:35:10,426 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2022-03-19 02:35:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-19 02:35:10,427 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:10,427 INFO L500 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:10,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-19 02:35:10,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-19 02:35:10,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46,SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:10,832 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1845596892, now seen corresponding path program 47 times [2022-03-19 02:35:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:10,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1771689939] [2022-03-19 02:35:10,863 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:10,864 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:10,864 INFO L85 PathProgramCache]: Analyzing trace with hash -507884873, now seen corresponding path program 1 times [2022-03-19 02:35:10,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:10,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76272824] [2022-03-19 02:35:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:10,868 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)) [2022-03-19 02:35:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:10,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246307202] [2022-03-19 02:35:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:10,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:10,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:10,877 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:10,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-19 02:35:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:10,936 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:10,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1845596892, now seen corresponding path program 48 times [2022-03-19 02:35:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:10,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732281247] [2022-03-19 02:35:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:11,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:11,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732281247] [2022-03-19 02:35:11,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732281247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:11,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472232901] [2022-03-19 02:35:11,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:35:11,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:11,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:11,404 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:11,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-19 02:35:11,706 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-03-19 02:35:11,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:11,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-19 02:35:11,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:11,869 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:11,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:13,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472232901] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:13,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 30] total 57 [2022-03-19 02:35:13,276 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:13,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1771689939] [2022-03-19 02:35:13,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1771689939] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:13,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-03-19 02:35:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057060282] [2022-03-19 02:35:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:13,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-19 02:35:13,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-19 02:35:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2381, Unknown=0, NotChecked=0, Total=3192 [2022-03-19 02:35:13,278 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:13,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:13,873 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2022-03-19 02:35:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-19 02:35:13,873 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-19 02:35:13,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:13,875 INFO L225 Difference]: With dead ends: 42 [2022-03-19 02:35:13,875 INFO L226 Difference]: Without dead ends: 37 [2022-03-19 02:35:13,876 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1584, Invalid=5058, Unknown=0, NotChecked=0, Total=6642 [2022-03-19 02:35:13,877 INFO L912 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 [2022-03-19 02:35:13,877 INFO L913 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] [2022-03-19 02:35:13,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-19 02:35:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-19 02:35:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:13,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-03-19 02:35:13,882 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2022-03-19 02:35:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:13,882 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-03-19 02:35:13,882 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-03-19 02:35:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-19 02:35:13,882 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:13,883 INFO L500 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:13,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:14,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-19 02:35:14,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48,SelfDestructingSolverStorable49 [2022-03-19 02:35:14,288 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1415390070, now seen corresponding path program 49 times [2022-03-19 02:35:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1599812865] [2022-03-19 02:35:14,322 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:14,323 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash -448779529, now seen corresponding path program 1 times [2022-03-19 02:35:14,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400476021] [2022-03-19 02:35:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:14,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:14,326 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)) [2022-03-19 02:35:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:14,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094840790] [2022-03-19 02:35:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:14,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:14,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:14,332 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:14,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-19 02:35:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:14,385 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:14,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1415390070, now seen corresponding path program 50 times [2022-03-19 02:35:14,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:14,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829946620] [2022-03-19 02:35:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:14,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:14,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829946620] [2022-03-19 02:35:14,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829946620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:14,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479148036] [2022-03-19 02:35:14,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:35:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:14,820 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:14,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-19 02:35:14,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:35:14,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:14,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-19 02:35:14,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:15,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:16,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479148036] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:16,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:16,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 56 [2022-03-19 02:35:16,073 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:16,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1599812865] [2022-03-19 02:35:16,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1599812865] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:16,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:16,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-03-19 02:35:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704013418] [2022-03-19 02:35:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:16,074 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-19 02:35:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-19 02:35:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2243, Unknown=0, NotChecked=0, Total=3080 [2022-03-19 02:35:16,075 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:16,705 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2022-03-19 02:35:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-19 02:35:16,705 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-03-19 02:35:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:16,706 INFO L225 Difference]: With dead ends: 43 [2022-03-19 02:35:16,706 INFO L226 Difference]: Without dead ends: 38 [2022-03-19 02:35:16,706 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1667, Invalid=4975, Unknown=0, NotChecked=0, Total=6642 [2022-03-19 02:35:16,707 INFO L912 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 [2022-03-19 02:35:16,707 INFO L913 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] [2022-03-19 02:35:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-19 02:35:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-03-19 02:35:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2022-03-19 02:35:16,711 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2022-03-19 02:35:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:16,711 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2022-03-19 02:35:16,711 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2022-03-19 02:35:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-19 02:35:16,712 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:16,712 INFO L500 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:16,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-03-19 02:35:16,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:17,115 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-03-19 02:35:17,116 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:17,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash 963880476, now seen corresponding path program 51 times [2022-03-19 02:35:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:17,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1832547003] [2022-03-19 02:35:17,149 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:17,149 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash -389674185, now seen corresponding path program 1 times [2022-03-19 02:35:17,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:17,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313175604] [2022-03-19 02:35:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:17,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:17,152 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)) [2022-03-19 02:35:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:17,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431395793] [2022-03-19 02:35:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:17,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:17,159 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:17,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-19 02:35:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:17,229 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:17,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:17,238 INFO L85 PathProgramCache]: Analyzing trace with hash 963880476, now seen corresponding path program 52 times [2022-03-19 02:35:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:17,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118358907] [2022-03-19 02:35:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:17,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:17,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118358907] [2022-03-19 02:35:17,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118358907] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:17,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347854771] [2022-03-19 02:35:17,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:35:17,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:17,662 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:17,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-19 02:35:17,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:35:17,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:17,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-19 02:35:17,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:17,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:18,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347854771] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:18,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:18,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 58 [2022-03-19 02:35:18,976 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:18,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1832547003] [2022-03-19 02:35:18,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1832547003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:18,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:18,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-03-19 02:35:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786863552] [2022-03-19 02:35:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:18,977 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-19 02:35:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-19 02:35:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=2410, Unknown=0, NotChecked=0, Total=3306 [2022-03-19 02:35:18,978 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:19,616 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-03-19 02:35:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-19 02:35:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-03-19 02:35:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:19,617 INFO L225 Difference]: With dead ends: 44 [2022-03-19 02:35:19,617 INFO L226 Difference]: Without dead ends: 39 [2022-03-19 02:35:19,618 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1785, Invalid=5355, Unknown=0, NotChecked=0, Total=7140 [2022-03-19 02:35:19,618 INFO L912 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 [2022-03-19 02:35:19,619 INFO L913 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] [2022-03-19 02:35:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-19 02:35:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-19 02:35:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2022-03-19 02:35:19,622 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2022-03-19 02:35:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:19,623 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2022-03-19 02:35:19,623 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2022-03-19 02:35:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-19 02:35:19,623 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:19,623 INFO L500 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:19,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-03-19 02:35:19,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:20,024 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52,SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:20,024 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:20,024 INFO L85 PathProgramCache]: Analyzing trace with hash -148015050, now seen corresponding path program 53 times [2022-03-19 02:35:20,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:20,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [974857370] [2022-03-19 02:35:20,056 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:20,057 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash -330568841, now seen corresponding path program 1 times [2022-03-19 02:35:20,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:20,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784027822] [2022-03-19 02:35:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:20,059 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)) [2022-03-19 02:35:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:20,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680881513] [2022-03-19 02:35:20,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:20,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:20,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:20,065 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:20,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-19 02:35:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:20,133 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:20,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -148015050, now seen corresponding path program 54 times [2022-03-19 02:35:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:20,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686178306] [2022-03-19 02:35:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:20,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:20,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:20,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686178306] [2022-03-19 02:35:20,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686178306] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:20,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116923718] [2022-03-19 02:35:20,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:35:20,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:20,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:20,595 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:20,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-19 02:35:21,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-03-19 02:35:21,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:21,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-19 02:35:21,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:21,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:26,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116923718] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:26,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:26,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 60 [2022-03-19 02:35:26,733 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:26,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [974857370] [2022-03-19 02:35:26,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [974857370] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:26,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:26,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-03-19 02:35:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932621981] [2022-03-19 02:35:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:26,734 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-19 02:35:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-19 02:35:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=2583, Unknown=0, NotChecked=0, Total=3540 [2022-03-19 02:35:26,735 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:27,455 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2022-03-19 02:35:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-19 02:35:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-03-19 02:35:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:27,455 INFO L225 Difference]: With dead ends: 45 [2022-03-19 02:35:27,455 INFO L226 Difference]: Without dead ends: 40 [2022-03-19 02:35:27,456 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1907, Invalid=5749, Unknown=0, NotChecked=0, Total=7656 [2022-03-19 02:35:27,457 INFO L912 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, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 02:35:27,457 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 02:35:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-19 02:35:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-03-19 02:35:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2022-03-19 02:35:27,461 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2022-03-19 02:35:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:27,461 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2022-03-19 02:35:27,461 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2022-03-19 02:35:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-19 02:35:27,462 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:27,462 INFO L500 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:27,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:27,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-19 02:35:27,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54,SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:27,867 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:27,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:27,868 INFO L85 PathProgramCache]: Analyzing trace with hash -257037988, now seen corresponding path program 55 times [2022-03-19 02:35:27,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:27,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1286694336] [2022-03-19 02:35:27,902 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:27,902 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash -271463497, now seen corresponding path program 1 times [2022-03-19 02:35:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:27,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841688935] [2022-03-19 02:35:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:27,905 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)) [2022-03-19 02:35:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:27,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613596361] [2022-03-19 02:35:27,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:27,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:27,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:27,910 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:27,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-19 02:35:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:27,954 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:27,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash -257037988, now seen corresponding path program 56 times [2022-03-19 02:35:27,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:27,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557787702] [2022-03-19 02:35:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:28,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557787702] [2022-03-19 02:35:28,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557787702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548934832] [2022-03-19 02:35:28,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:35:28,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:28,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:28,475 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:28,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-19 02:35:28,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:35:28,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:28,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-19 02:35:28,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:28,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:30,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548934832] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:30,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:30,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 62 [2022-03-19 02:35:30,031 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:30,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1286694336] [2022-03-19 02:35:30,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1286694336] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:30,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:30,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-03-19 02:35:30,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988935434] [2022-03-19 02:35:30,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:30,032 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-19 02:35:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-19 02:35:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1020, Invalid=2762, Unknown=0, NotChecked=0, Total=3782 [2022-03-19 02:35:30,033 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:30,870 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-03-19 02:35:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-19 02:35:30,871 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-03-19 02:35:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:30,871 INFO L225 Difference]: With dead ends: 46 [2022-03-19 02:35:30,871 INFO L226 Difference]: Without dead ends: 41 [2022-03-19 02:35:30,872 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2033, Invalid=6157, Unknown=0, NotChecked=0, Total=8190 [2022-03-19 02:35:30,872 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-19 02:35:30,873 INFO L913 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] [2022-03-19 02:35:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-19 02:35:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-19 02:35:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-03-19 02:35:30,885 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2022-03-19 02:35:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:30,885 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-03-19 02:35:30,885 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.09375) internal successors, (35), 31 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-03-19 02:35:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 02:35:30,886 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:30,886 INFO L500 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:30,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-19 02:35:31,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-19 02:35:31,291 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:31,292 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 658218230, now seen corresponding path program 57 times [2022-03-19 02:35:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1864087166] [2022-03-19 02:35:31,337 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:31,337 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash -212358153, now seen corresponding path program 1 times [2022-03-19 02:35:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:31,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606466393] [2022-03-19 02:35:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:31,341 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)) [2022-03-19 02:35:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:31,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841273519] [2022-03-19 02:35:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:31,346 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:31,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-19 02:35:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:31,414 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:31,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash 658218230, now seen corresponding path program 58 times [2022-03-19 02:35:31,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:31,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22052150] [2022-03-19 02:35:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:31,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22052150] [2022-03-19 02:35:31,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22052150] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:31,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617640619] [2022-03-19 02:35:31,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:35:31,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:31,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:31,965 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) [2022-03-19 02:35:31,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-19 02:35:32,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:35:32,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:32,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-19 02:35:32,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:32,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:33,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617640619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:33,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:33,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 64 [2022-03-19 02:35:33,575 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1864087166] [2022-03-19 02:35:33,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1864087166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:33,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:33,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-03-19 02:35:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142210369] [2022-03-19 02:35:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:33,577 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-19 02:35:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-19 02:35:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=2947, Unknown=0, NotChecked=0, Total=4032 [2022-03-19 02:35:33,579 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:34,414 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-03-19 02:35:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-19 02:35:34,414 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-03-19 02:35:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:34,415 INFO L225 Difference]: With dead ends: 47 [2022-03-19 02:35:34,415 INFO L226 Difference]: Without dead ends: 42 [2022-03-19 02:35:34,416 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2163, Invalid=6579, Unknown=0, NotChecked=0, Total=8742 [2022-03-19 02:35:34,416 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-03-19 02:35:34,416 INFO L913 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] [2022-03-19 02:35:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-19 02:35:34,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-19 02:35:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2022-03-19 02:35:34,419 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2022-03-19 02:35:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:34,419 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2022-03-19 02:35:34,419 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2022-03-19 02:35:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-19 02:35:34,420 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:34,420 INFO L500 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:34,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-19 02:35:34,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:34,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58,SelfDestructingSolverStorable59 [2022-03-19 02:35:34,836 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:34,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:34,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1033610084, now seen corresponding path program 59 times [2022-03-19 02:35:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:34,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1283238820] [2022-03-19 02:35:34,870 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:34,870 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:34,870 INFO L85 PathProgramCache]: Analyzing trace with hash -153252809, now seen corresponding path program 1 times [2022-03-19 02:35:34,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:34,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973961667] [2022-03-19 02:35:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:34,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:34,873 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)) [2022-03-19 02:35:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:34,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054339278] [2022-03-19 02:35:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:34,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:34,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:34,885 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:34,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-19 02:35:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:34,946 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:34,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1033610084, now seen corresponding path program 60 times [2022-03-19 02:35:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:34,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350462136] [2022-03-19 02:35:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:35,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350462136] [2022-03-19 02:35:35,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350462136] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134390820] [2022-03-19 02:35:35,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:35:35,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:35,536 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-19 02:35:36,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-03-19 02:35:36,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:36,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-19 02:35:36,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:36,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:43,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134390820] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:43,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:43,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 36] total 69 [2022-03-19 02:35:43,842 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:43,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1283238820] [2022-03-19 02:35:43,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1283238820] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:43,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:43,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-03-19 02:35:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22224887] [2022-03-19 02:35:43,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:43,843 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-19 02:35:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-19 02:35:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3503, Unknown=0, NotChecked=0, Total=4692 [2022-03-19 02:35:43,844 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:44,739 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2022-03-19 02:35:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-19 02:35:44,740 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-03-19 02:35:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:44,740 INFO L225 Difference]: With dead ends: 48 [2022-03-19 02:35:44,740 INFO L226 Difference]: Without dead ends: 43 [2022-03-19 02:35:44,741 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2334, Invalid=7566, Unknown=0, NotChecked=0, Total=9900 [2022-03-19 02:35:44,742 INFO L912 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:35:44,742 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 02:35:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-19 02:35:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-19 02:35:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2022-03-19 02:35:44,745 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2022-03-19 02:35:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:44,745 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2022-03-19 02:35:44,745 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.088235294117647) internal successors, (37), 33 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2022-03-19 02:35:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-19 02:35:44,745 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:44,746 INFO L500 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:44,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-03-19 02:35:44,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:45,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:45,148 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1940680266, now seen corresponding path program 61 times [2022-03-19 02:35:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:45,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2135883708] [2022-03-19 02:35:45,183 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:45,183 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -94147465, now seen corresponding path program 1 times [2022-03-19 02:35:45,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:45,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304241125] [2022-03-19 02:35:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:45,186 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)) [2022-03-19 02:35:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:45,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103922708] [2022-03-19 02:35:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:45,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:45,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:45,191 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:45,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-19 02:35:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:45,231 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:45,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1940680266, now seen corresponding path program 62 times [2022-03-19 02:35:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:45,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658014785] [2022-03-19 02:35:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:45,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:45,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:45,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658014785] [2022-03-19 02:35:45,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658014785] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:45,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663766280] [2022-03-19 02:35:45,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:35:45,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:45,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:45,896 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:45,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-19 02:35:45,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:35:45,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:45,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-19 02:35:45,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:46,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:47,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663766280] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:47,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 68 [2022-03-19 02:35:47,761 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:47,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2135883708] [2022-03-19 02:35:47,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2135883708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:47,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-03-19 02:35:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775984640] [2022-03-19 02:35:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:47,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-19 02:35:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-19 02:35:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=3335, Unknown=0, NotChecked=0, Total=4556 [2022-03-19 02:35:47,762 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:48,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:48,736 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2022-03-19 02:35:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-19 02:35:48,736 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-03-19 02:35:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:48,737 INFO L225 Difference]: With dead ends: 49 [2022-03-19 02:35:48,737 INFO L226 Difference]: Without dead ends: 44 [2022-03-19 02:35:48,737 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2435, Invalid=7465, Unknown=0, NotChecked=0, Total=9900 [2022-03-19 02:35:48,738 INFO L912 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:35:48,738 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 168 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 02:35:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-19 02:35:48,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-19 02:35:48,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2022-03-19 02:35:48,740 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2022-03-19 02:35:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:48,740 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2022-03-19 02:35:48,741 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:48,741 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2022-03-19 02:35:48,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-19 02:35:48,741 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:48,741 INFO L500 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:48,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:48,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-03-19 02:35:49,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:49,142 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:49,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:49,142 INFO L85 PathProgramCache]: Analyzing trace with hash 4915164, now seen corresponding path program 63 times [2022-03-19 02:35:49,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:49,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [812424314] [2022-03-19 02:35:49,171 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:49,172 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash -35042121, now seen corresponding path program 1 times [2022-03-19 02:35:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:49,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662718232] [2022-03-19 02:35:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:49,175 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)) [2022-03-19 02:35:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:49,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606284067] [2022-03-19 02:35:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:49,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:49,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:49,180 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:49,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-19 02:35:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:49,225 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:49,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 4915164, now seen corresponding path program 64 times [2022-03-19 02:35:49,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:49,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584719879] [2022-03-19 02:35:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584719879] [2022-03-19 02:35:49,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584719879] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369036077] [2022-03-19 02:35:49,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:35:49,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:49,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:49,862 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:49,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-19 02:35:49,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:35:49,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:49,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-19 02:35:49,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:50,117 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:50,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:51,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369036077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:51,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:51,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 70 [2022-03-19 02:35:51,824 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:51,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [812424314] [2022-03-19 02:35:51,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [812424314] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:51,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:51,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-03-19 02:35:51,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312499599] [2022-03-19 02:35:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:51,825 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-19 02:35:51,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-19 02:35:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1292, Invalid=3538, Unknown=0, NotChecked=0, Total=4830 [2022-03-19 02:35:51,826 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:52,759 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2022-03-19 02:35:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-19 02:35:52,759 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-03-19 02:35:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:52,760 INFO L225 Difference]: With dead ends: 50 [2022-03-19 02:35:52,760 INFO L226 Difference]: Without dead ends: 45 [2022-03-19 02:35:52,760 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2577, Invalid=7929, Unknown=0, NotChecked=0, Total=10506 [2022-03-19 02:35:52,761 INFO L912 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:35:52,761 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 02:35:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-19 02:35:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-03-19 02:35:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2022-03-19 02:35:52,764 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2022-03-19 02:35:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:52,764 INFO L478 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2022-03-19 02:35:52,764 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 35 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2022-03-19 02:35:52,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-19 02:35:52,764 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:52,764 INFO L500 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:52,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-19 02:35:52,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-19 02:35:53,167 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64,SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:53,168 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:53,168 INFO L85 PathProgramCache]: Analyzing trace with hash 188831350, now seen corresponding path program 65 times [2022-03-19 02:35:53,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:53,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [664409966] [2022-03-19 02:35:53,206 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:53,207 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash 24063223, now seen corresponding path program 1 times [2022-03-19 02:35:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:53,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681951042] [2022-03-19 02:35:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:53,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:53,209 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)) [2022-03-19 02:35:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:53,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502273627] [2022-03-19 02:35:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:53,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:53,215 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-19 02:35:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:53,279 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:53,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash 188831350, now seen corresponding path program 66 times [2022-03-19 02:35:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:53,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039981234] [2022-03-19 02:35:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:35:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:35:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:53,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:35:53,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039981234] [2022-03-19 02:35:53,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039981234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:35:53,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790872623] [2022-03-19 02:35:53,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:35:53,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:53,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:53,968 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:53,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-19 02:35:55,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2022-03-19 02:35:55,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:35:55,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-19 02:35:55,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:35:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:55,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:35:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:35:57,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790872623] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:35:57,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:35:57,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 39] total 75 [2022-03-19 02:35:57,842 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:35:57,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [664409966] [2022-03-19 02:35:57,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [664409966] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:35:57,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:35:57,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-03-19 02:35:57,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864640560] [2022-03-19 02:35:57,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:35:57,842 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-19 02:35:57,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-19 02:35:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=4145, Unknown=0, NotChecked=0, Total=5550 [2022-03-19 02:35:57,843 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:35:58,916 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2022-03-19 02:35:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-19 02:35:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-03-19 02:35:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:35:58,917 INFO L225 Difference]: With dead ends: 51 [2022-03-19 02:35:58,917 INFO L226 Difference]: Without dead ends: 46 [2022-03-19 02:35:58,918 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2763, Invalid=9009, Unknown=0, NotChecked=0, Total=11772 [2022-03-19 02:35:58,918 INFO L912 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, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:35:58,919 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 02:35:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-19 02:35:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-03-19 02:35:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-03-19 02:35:58,922 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2022-03-19 02:35:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:35:58,923 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-03-19 02:35:58,923 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 36 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:35:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-03-19 02:35:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-19 02:35:58,923 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:35:58,923 INFO L500 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:35:58,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-19 02:35:59,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-03-19 02:35:59,327 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66,SelfDestructingSolverStorable67 [2022-03-19 02:35:59,328 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:35:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:35:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1595265820, now seen corresponding path program 67 times [2022-03-19 02:35:59,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:35:59,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [700801586] [2022-03-19 02:35:59,349 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:35:59,349 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:35:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash 83168567, now seen corresponding path program 1 times [2022-03-19 02:35:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:59,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086080062] [2022-03-19 02:35:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:59,352 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)) [2022-03-19 02:35:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:35:59,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355662425] [2022-03-19 02:35:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:59,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:35:59,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:35:59,357 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:35:59,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-19 02:35:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:59,404 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:35:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:35:59,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:35:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1595265820, now seen corresponding path program 68 times [2022-03-19 02:35:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:35:59,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036402000] [2022-03-19 02:35:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:35:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:35:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:00,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:00,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036402000] [2022-03-19 02:36:00,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036402000] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:00,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320849906] [2022-03-19 02:36:00,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:36:00,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:00,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:00,072 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:00,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-19 02:36:00,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:36:00,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:00,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 71 conjunts are in the unsatisfiable core [2022-03-19 02:36:00,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:00,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:02,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320849906] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:02,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:02,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 37] total 74 [2022-03-19 02:36:02,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:02,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [700801586] [2022-03-19 02:36:02,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [700801586] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:02,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:02,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2022-03-19 02:36:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629518414] [2022-03-19 02:36:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:02,196 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-19 02:36:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-19 02:36:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1440, Invalid=3962, Unknown=0, NotChecked=0, Total=5402 [2022-03-19 02:36:02,197 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:03,256 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2022-03-19 02:36:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-19 02:36:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-03-19 02:36:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:03,257 INFO L225 Difference]: With dead ends: 52 [2022-03-19 02:36:03,257 INFO L226 Difference]: Without dead ends: 47 [2022-03-19 02:36:03,258 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2873, Invalid=8899, Unknown=0, NotChecked=0, Total=11772 [2022-03-19 02:36:03,258 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-03-19 02:36:03,258 INFO L913 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] [2022-03-19 02:36:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-19 02:36:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-03-19 02:36:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-03-19 02:36:03,262 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2022-03-19 02:36:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:03,262 INFO L478 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-03-19 02:36:03,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 37 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-03-19 02:36:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 02:36:03,263 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:03,263 INFO L500 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:03,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-19 02:36:03,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-19 02:36:03,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68,SelfDestructingSolverStorable69 [2022-03-19 02:36:03,664 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:03,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:03,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905866, now seen corresponding path program 69 times [2022-03-19 02:36:03,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:03,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1252900266] [2022-03-19 02:36:03,695 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:03,695 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash 142273911, now seen corresponding path program 1 times [2022-03-19 02:36:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:03,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388411660] [2022-03-19 02:36:03,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:03,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:03,697 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)) [2022-03-19 02:36:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:03,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1911372369] [2022-03-19 02:36:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:03,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:03,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:03,703 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:03,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-19 02:36:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:03,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:03,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2049905866, now seen corresponding path program 70 times [2022-03-19 02:36:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:03,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171618190] [2022-03-19 02:36:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:04,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:04,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171618190] [2022-03-19 02:36:04,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171618190] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:04,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016026773] [2022-03-19 02:36:04,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:36:04,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:04,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:04,508 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:04,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-19 02:36:04,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:36:04,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:04,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-19 02:36:04,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:04,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:06,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016026773] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:06,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:06,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 76 [2022-03-19 02:36:06,687 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:06,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1252900266] [2022-03-19 02:36:06,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1252900266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:06,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:06,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-03-19 02:36:06,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963900397] [2022-03-19 02:36:06,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:06,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-19 02:36:06,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:06,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-19 02:36:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=4183, Unknown=0, NotChecked=0, Total=5700 [2022-03-19 02:36:06,689 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:07,846 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2022-03-19 02:36:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-19 02:36:07,847 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-03-19 02:36:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:07,847 INFO L225 Difference]: With dead ends: 53 [2022-03-19 02:36:07,847 INFO L226 Difference]: Without dead ends: 48 [2022-03-19 02:36:07,848 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3027, Invalid=9405, Unknown=0, NotChecked=0, Total=12432 [2022-03-19 02:36:07,849 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 02:36:07,849 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 1455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 02:36:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-19 02:36:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-03-19 02:36:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-03-19 02:36:07,854 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2022-03-19 02:36:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:07,854 INFO L478 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-03-19 02:36:07,855 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-03-19 02:36:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 02:36:07,855 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:07,855 INFO L500 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:07,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-03-19 02:36:08,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-19 02:36:08,259 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:08,260 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:08,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:08,260 INFO L85 PathProgramCache]: Analyzing trace with hash 913888860, now seen corresponding path program 71 times [2022-03-19 02:36:08,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:08,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [468590972] [2022-03-19 02:36:08,292 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:08,292 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash 201379255, now seen corresponding path program 1 times [2022-03-19 02:36:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:08,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949308204] [2022-03-19 02:36:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:08,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:08,295 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)) [2022-03-19 02:36:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:08,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002239431] [2022-03-19 02:36:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:08,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:08,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:08,300 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:08,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-19 02:36:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:08,348 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:08,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:08,357 INFO L85 PathProgramCache]: Analyzing trace with hash 913888860, now seen corresponding path program 72 times [2022-03-19 02:36:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:08,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636009681] [2022-03-19 02:36:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:09,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636009681] [2022-03-19 02:36:09,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636009681] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:09,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320700747] [2022-03-19 02:36:09,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:36:09,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:09,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:09,074 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:09,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-19 02:36:11,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-03-19 02:36:11,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:11,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-19 02:36:11,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:11,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:14,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320700747] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:14,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 42] total 81 [2022-03-19 02:36:14,603 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:14,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [468590972] [2022-03-19 02:36:14,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [468590972] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:14,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:14,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-03-19 02:36:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304705608] [2022-03-19 02:36:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:14,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-19 02:36:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-19 02:36:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4841, Unknown=0, NotChecked=0, Total=6480 [2022-03-19 02:36:14,605 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:15,811 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2022-03-19 02:36:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-19 02:36:15,811 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-03-19 02:36:15,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:15,811 INFO L225 Difference]: With dead ends: 54 [2022-03-19 02:36:15,811 INFO L226 Difference]: Without dead ends: 49 [2022-03-19 02:36:15,812 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3228, Invalid=10578, Unknown=0, NotChecked=0, Total=13806 [2022-03-19 02:36:15,813 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 02:36:15,813 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 02:36:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-19 02:36:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-19 02:36:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-03-19 02:36:15,817 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2022-03-19 02:36:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:15,818 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-03-19 02:36:15,818 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.075) internal successors, (43), 39 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-03-19 02:36:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-19 02:36:15,818 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:15,818 INFO L500 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:15,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-19 02:36:16,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-19 02:36:16,225 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72,SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:16,225 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:16,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1697755146, now seen corresponding path program 73 times [2022-03-19 02:36:16,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:16,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1044752813] [2022-03-19 02:36:16,253 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:16,253 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash 260484599, now seen corresponding path program 1 times [2022-03-19 02:36:16,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:16,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147236703] [2022-03-19 02:36:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:16,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:16,256 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)) [2022-03-19 02:36:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:16,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653158080] [2022-03-19 02:36:16,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:16,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:16,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:16,261 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:16,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-19 02:36:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:16,310 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:16,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1697755146, now seen corresponding path program 74 times [2022-03-19 02:36:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:16,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336377958] [2022-03-19 02:36:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:16,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:17,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:17,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336377958] [2022-03-19 02:36:17,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336377958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:17,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339437743] [2022-03-19 02:36:17,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:36:17,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:17,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:17,217 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:17,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-19 02:36:17,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:36:17,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:17,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 77 conjunts are in the unsatisfiable core [2022-03-19 02:36:17,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:17,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:19,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339437743] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:19,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:19,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 80 [2022-03-19 02:36:19,655 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1044752813] [2022-03-19 02:36:19,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1044752813] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:19,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:19,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2022-03-19 02:36:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793087113] [2022-03-19 02:36:19,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:19,655 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-19 02:36:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-19 02:36:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1677, Invalid=4643, Unknown=0, NotChecked=0, Total=6320 [2022-03-19 02:36:19,656 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:20,907 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2022-03-19 02:36:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-19 02:36:20,908 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-03-19 02:36:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:20,908 INFO L225 Difference]: With dead ends: 55 [2022-03-19 02:36:20,908 INFO L226 Difference]: Without dead ends: 50 [2022-03-19 02:36:20,910 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3347, Invalid=10459, Unknown=0, NotChecked=0, Total=13806 [2022-03-19 02:36:20,910 INFO L912 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 [2022-03-19 02:36:20,910 INFO L913 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] [2022-03-19 02:36:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-19 02:36:20,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-03-19 02:36:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-03-19 02:36:20,914 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2022-03-19 02:36:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:20,914 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-03-19 02:36:20,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 40 states have internal predecessors, (44), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-03-19 02:36:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-19 02:36:20,915 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:20,915 INFO L500 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:20,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-19 02:36:21,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-03-19 02:36:21,320 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:21,321 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1054340708, now seen corresponding path program 75 times [2022-03-19 02:36:21,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:21,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [935052194] [2022-03-19 02:36:21,356 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:21,356 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:21,357 INFO L85 PathProgramCache]: Analyzing trace with hash 319589943, now seen corresponding path program 1 times [2022-03-19 02:36:21,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:21,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85275071] [2022-03-19 02:36:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:21,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:21,359 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)) [2022-03-19 02:36:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:21,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943272160] [2022-03-19 02:36:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:21,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:21,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:21,364 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:21,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-19 02:36:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:21,420 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:21,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:21,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1054340708, now seen corresponding path program 76 times [2022-03-19 02:36:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:21,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353662600] [2022-03-19 02:36:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:21,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:22,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353662600] [2022-03-19 02:36:22,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353662600] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:22,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849608105] [2022-03-19 02:36:22,258 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:36:22,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:22,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:22,259 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:22,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-19 02:36:22,353 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:36:22,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:22,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 79 conjunts are in the unsatisfiable core [2022-03-19 02:36:22,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:22,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849608105] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:24,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:24,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 82 [2022-03-19 02:36:24,883 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:24,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [935052194] [2022-03-19 02:36:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [935052194] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:24,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:24,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2022-03-19 02:36:24,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497056470] [2022-03-19 02:36:24,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:24,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-19 02:36:24,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-19 02:36:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1760, Invalid=4882, Unknown=0, NotChecked=0, Total=6642 [2022-03-19 02:36:24,884 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:26,161 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2022-03-19 02:36:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-19 02:36:26,161 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-03-19 02:36:26,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:26,161 INFO L225 Difference]: With dead ends: 56 [2022-03-19 02:36:26,161 INFO L226 Difference]: Without dead ends: 51 [2022-03-19 02:36:26,163 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3513, Invalid=11007, Unknown=0, NotChecked=0, Total=14520 [2022-03-19 02:36:26,163 INFO L912 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 [2022-03-19 02:36:26,163 INFO L913 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] [2022-03-19 02:36:26,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-19 02:36:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-03-19 02:36:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:26,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-03-19 02:36:26,167 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2022-03-19 02:36:26,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:26,167 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-03-19 02:36:26,167 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 41 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-03-19 02:36:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 02:36:26,168 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:26,168 INFO L500 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:26,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-19 02:36:26,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-19 02:36:26,573 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76,SelfDestructingSolverStorable77 [2022-03-19 02:36:26,573 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1711637686, now seen corresponding path program 77 times [2022-03-19 02:36:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:26,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2088584933] [2022-03-19 02:36:26,609 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:26,609 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 378695287, now seen corresponding path program 1 times [2022-03-19 02:36:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:26,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908062148] [2022-03-19 02:36:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:26,611 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)) [2022-03-19 02:36:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:26,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812796417] [2022-03-19 02:36:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:26,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:26,616 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:26,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-19 02:36:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:26,660 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:26,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1711637686, now seen corresponding path program 78 times [2022-03-19 02:36:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:26,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842545149] [2022-03-19 02:36:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:27,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:27,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842545149] [2022-03-19 02:36:27,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842545149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:27,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402340152] [2022-03-19 02:36:27,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:36:27,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:27,516 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:27,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-19 02:36:31,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-03-19 02:36:31,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:31,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 87 conjunts are in the unsatisfiable core [2022-03-19 02:36:31,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:32,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:35,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402340152] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:35,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:35,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 45] total 87 [2022-03-19 02:36:35,495 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:35,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2088584933] [2022-03-19 02:36:35,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2088584933] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:35,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:35,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2022-03-19 02:36:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445572286] [2022-03-19 02:36:35,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:35,495 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-19 02:36:35,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-19 02:36:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5591, Unknown=0, NotChecked=0, Total=7482 [2022-03-19 02:36:35,496 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:36,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:36,910 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2022-03-19 02:36:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-19 02:36:36,910 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-03-19 02:36:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:36,911 INFO L225 Difference]: With dead ends: 57 [2022-03-19 02:36:36,911 INFO L226 Difference]: Without dead ends: 52 [2022-03-19 02:36:36,913 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3729, Invalid=12273, Unknown=0, NotChecked=0, Total=16002 [2022-03-19 02:36:36,913 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:36:36,913 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 02:36:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-19 02:36:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-19 02:36:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2022-03-19 02:36:36,917 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2022-03-19 02:36:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:36,917 INFO L478 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2022-03-19 02:36:36,917 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2022-03-19 02:36:36,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 02:36:36,917 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:36,917 INFO L500 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:36,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-03-19 02:36:37,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-03-19 02:36:37,323 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:37,323 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:37,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1557621980, now seen corresponding path program 79 times [2022-03-19 02:36:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:37,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1073850653] [2022-03-19 02:36:37,352 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:37,353 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:37,353 INFO L85 PathProgramCache]: Analyzing trace with hash 437800631, now seen corresponding path program 1 times [2022-03-19 02:36:37,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:37,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385845576] [2022-03-19 02:36:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:37,356 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)) [2022-03-19 02:36:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753964058] [2022-03-19 02:36:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:37,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:37,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:37,360 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:37,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-19 02:36:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:37,405 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:37,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1557621980, now seen corresponding path program 80 times [2022-03-19 02:36:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:37,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726416913] [2022-03-19 02:36:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:37,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:38,250 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:38,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726416913] [2022-03-19 02:36:38,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726416913] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:38,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425729004] [2022-03-19 02:36:38,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:36:38,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:38,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:38,252 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:38,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-19 02:36:38,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:36:38,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:38,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 83 conjunts are in the unsatisfiable core [2022-03-19 02:36:38,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:38,494 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:38,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:40,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425729004] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:40,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:40,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 43] total 86 [2022-03-19 02:36:40,993 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:40,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1073850653] [2022-03-19 02:36:40,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1073850653] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:40,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:40,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-03-19 02:36:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845872751] [2022-03-19 02:36:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:40,993 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-19 02:36:40,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-19 02:36:40,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1932, Invalid=5378, Unknown=0, NotChecked=0, Total=7310 [2022-03-19 02:36:40,995 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:42,370 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2022-03-19 02:36:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-19 02:36:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-03-19 02:36:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:42,371 INFO L225 Difference]: With dead ends: 58 [2022-03-19 02:36:42,371 INFO L226 Difference]: Without dead ends: 53 [2022-03-19 02:36:42,373 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3857, Invalid=12145, Unknown=0, NotChecked=0, Total=16002 [2022-03-19 02:36:42,375 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:36:42,376 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 02:36:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-19 02:36:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-03-19 02:36:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2022-03-19 02:36:42,380 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2022-03-19 02:36:42,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:42,380 INFO L478 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2022-03-19 02:36:42,381 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:42,381 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2022-03-19 02:36:42,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 02:36:42,381 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:42,381 INFO L500 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:42,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-19 02:36:42,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-19 02:36:42,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:42,788 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1078102390, now seen corresponding path program 81 times [2022-03-19 02:36:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [916024375] [2022-03-19 02:36:42,831 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:42,832 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 496905975, now seen corresponding path program 1 times [2022-03-19 02:36:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:42,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120742584] [2022-03-19 02:36:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:42,835 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)) [2022-03-19 02:36:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:42,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179798235] [2022-03-19 02:36:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:42,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:42,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:42,840 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:42,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-19 02:36:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:42,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:42,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1078102390, now seen corresponding path program 82 times [2022-03-19 02:36:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:42,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735997246] [2022-03-19 02:36:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:43,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:43,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735997246] [2022-03-19 02:36:43,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735997246] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:43,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243305013] [2022-03-19 02:36:43,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:36:43,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:43,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:43,812 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:43,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-19 02:36:43,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:36:43,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:43,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 85 conjunts are in the unsatisfiable core [2022-03-19 02:36:43,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:44,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:46,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243305013] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:46,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:46,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 88 [2022-03-19 02:36:46,729 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:46,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [916024375] [2022-03-19 02:36:46,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [916024375] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:46,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:46,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2022-03-19 02:36:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96101049] [2022-03-19 02:36:46,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:46,729 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-19 02:36:46,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-19 02:36:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2021, Invalid=5635, Unknown=0, NotChecked=0, Total=7656 [2022-03-19 02:36:46,731 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:48,204 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-03-19 02:36:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-19 02:36:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-03-19 02:36:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:48,205 INFO L225 Difference]: With dead ends: 59 [2022-03-19 02:36:48,205 INFO L226 Difference]: Without dead ends: 54 [2022-03-19 02:36:48,206 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4035, Invalid=12735, Unknown=0, NotChecked=0, Total=16770 [2022-03-19 02:36:48,206 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:36:48,206 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 63 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 02:36:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-19 02:36:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-19 02:36:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2022-03-19 02:36:48,209 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2022-03-19 02:36:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:48,209 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2022-03-19 02:36:48,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 44 states have internal predecessors, (48), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2022-03-19 02:36:48,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 02:36:48,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:48,210 INFO L500 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:48,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-19 02:36:48,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-19 02:36:48,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82,SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:48,634 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:48,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash -902103012, now seen corresponding path program 83 times [2022-03-19 02:36:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:48,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1398424003] [2022-03-19 02:36:48,661 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:48,662 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 556011319, now seen corresponding path program 1 times [2022-03-19 02:36:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:48,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131748657] [2022-03-19 02:36:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:48,665 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)) [2022-03-19 02:36:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934624785] [2022-03-19 02:36:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:48,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:48,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:48,669 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:48,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-19 02:36:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:48,732 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:48,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:48,742 INFO L85 PathProgramCache]: Analyzing trace with hash -902103012, now seen corresponding path program 84 times [2022-03-19 02:36:48,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304144075] [2022-03-19 02:36:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:49,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:49,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304144075] [2022-03-19 02:36:49,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304144075] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418794346] [2022-03-19 02:36:49,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:36:49,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:49,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:49,662 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:49,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-19 02:36:52,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-03-19 02:36:52,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:52,632 WARN L261 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-19 02:36:52,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:52,861 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:52,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:36:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:56,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418794346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:36:56,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:36:56,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45, 48] total 93 [2022-03-19 02:36:56,618 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:36:56,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1398424003] [2022-03-19 02:36:56,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1398424003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:36:56,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:36:56,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2022-03-19 02:36:56,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667873442] [2022-03-19 02:36:56,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:36:56,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-19 02:36:56,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:56,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-19 02:36:56,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6395, Unknown=0, NotChecked=0, Total=8556 [2022-03-19 02:36:56,619 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:36:58,124 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2022-03-19 02:36:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-19 02:36:58,126 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-03-19 02:36:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:36:58,126 INFO L225 Difference]: With dead ends: 60 [2022-03-19 02:36:58,126 INFO L226 Difference]: Without dead ends: 55 [2022-03-19 02:36:58,128 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4266, Invalid=14094, Unknown=0, NotChecked=0, Total=18360 [2022-03-19 02:36:58,128 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:36:58,128 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 02:36:58,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-19 02:36:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-19 02:36:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-03-19 02:36:58,131 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2022-03-19 02:36:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:36:58,131 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-03-19 02:36:58,131 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.065217391304348) internal successors, (49), 45 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:36:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-03-19 02:36:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 02:36:58,132 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:36:58,132 INFO L500 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:36:58,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-19 02:36:58,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-03-19 02:36:58,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:58,532 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:36:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:36:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2136038966, now seen corresponding path program 85 times [2022-03-19 02:36:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:36:58,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1490818986] [2022-03-19 02:36:58,558 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:36:58,558 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:36:58,559 INFO L85 PathProgramCache]: Analyzing trace with hash 615116663, now seen corresponding path program 1 times [2022-03-19 02:36:58,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:58,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883682877] [2022-03-19 02:36:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:58,561 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)) [2022-03-19 02:36:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:36:58,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880216586] [2022-03-19 02:36:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:58,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:58,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:58,574 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:58,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-19 02:36:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:58,621 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:36:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:36:58,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:36:58,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2136038966, now seen corresponding path program 86 times [2022-03-19 02:36:58,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:36:58,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204089774] [2022-03-19 02:36:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:36:58,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:36:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:36:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:36:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:59,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:36:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204089774] [2022-03-19 02:36:59,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204089774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:36:59,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311053350] [2022-03-19 02:36:59,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:36:59,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:36:59,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:36:59,579 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:36:59,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-19 02:36:59,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:36:59,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:36:59,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-19 02:36:59,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:36:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:36:59,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:37:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:02,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311053350] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:37:02,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:37:02,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 92 [2022-03-19 02:37:02,617 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:37:02,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1490818986] [2022-03-19 02:37:02,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1490818986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:37:02,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:37:02,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2022-03-19 02:37:02,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523518633] [2022-03-19 02:37:02,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:37:02,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-19 02:37:02,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-19 02:37:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2205, Invalid=6167, Unknown=0, NotChecked=0, Total=8372 [2022-03-19 02:37:02,618 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:04,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:37:04,162 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2022-03-19 02:37:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-19 02:37:04,163 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-03-19 02:37:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:37:04,163 INFO L225 Difference]: With dead ends: 61 [2022-03-19 02:37:04,163 INFO L226 Difference]: Without dead ends: 56 [2022-03-19 02:37:04,164 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4403, Invalid=13957, Unknown=0, NotChecked=0, Total=18360 [2022-03-19 02:37:04,165 INFO L912 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 [2022-03-19 02:37:04,165 INFO L913 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] [2022-03-19 02:37:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-19 02:37:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-19 02:37:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2022-03-19 02:37:04,168 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2022-03-19 02:37:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:37:04,168 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2022-03-19 02:37:04,168 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2022-03-19 02:37:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 02:37:04,169 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:37:04,169 INFO L500 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:37:04,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-19 02:37:04,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-19 02:37:04,569 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:04,570 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:37:04,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:37:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1829159772, now seen corresponding path program 87 times [2022-03-19 02:37:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:04,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [212087388] [2022-03-19 02:37:04,604 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:37:04,604 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:37:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash 674222007, now seen corresponding path program 1 times [2022-03-19 02:37:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:04,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449838805] [2022-03-19 02:37:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:04,607 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)) [2022-03-19 02:37:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:37:04,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086582306] [2022-03-19 02:37:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:04,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:04,611 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:04,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-19 02:37:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:04,661 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:37:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:04,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:37:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1829159772, now seen corresponding path program 88 times [2022-03-19 02:37:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:04,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882383342] [2022-03-19 02:37:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:37:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:37:05,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882383342] [2022-03-19 02:37:05,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882383342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:37:05,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144548617] [2022-03-19 02:37:05,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:37:05,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:05,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:05,755 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:05,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-19 02:37:05,869 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:37:05,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:37:05,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 91 conjunts are in the unsatisfiable core [2022-03-19 02:37:05,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:37:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:06,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:37:09,005 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:09,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144548617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:37:09,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:37:09,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 94 [2022-03-19 02:37:09,005 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:37:09,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [212087388] [2022-03-19 02:37:09,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [212087388] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:37:09,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:37:09,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-03-19 02:37:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467264051] [2022-03-19 02:37:09,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:37:09,006 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-19 02:37:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:09,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-19 02:37:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2300, Invalid=6442, Unknown=0, NotChecked=0, Total=8742 [2022-03-19 02:37:09,007 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:37:10,616 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2022-03-19 02:37:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-19 02:37:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-03-19 02:37:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:37:10,617 INFO L225 Difference]: With dead ends: 62 [2022-03-19 02:37:10,617 INFO L226 Difference]: Without dead ends: 57 [2022-03-19 02:37:10,619 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4593, Invalid=14589, Unknown=0, NotChecked=0, Total=19182 [2022-03-19 02:37:10,620 INFO L912 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 [2022-03-19 02:37:10,620 INFO L913 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] [2022-03-19 02:37:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-19 02:37:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-03-19 02:37:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:10,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2022-03-19 02:37:10,624 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2022-03-19 02:37:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:37:10,624 INFO L478 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2022-03-19 02:37:10,624 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0625) internal successors, (51), 47 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2022-03-19 02:37:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 02:37:10,625 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:37:10,625 INFO L500 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:37:10,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-03-19 02:37:10,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-03-19 02:37:11,035 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88,SelfDestructingSolverStorable89,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:11,036 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:37:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:37:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 905839350, now seen corresponding path program 89 times [2022-03-19 02:37:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1310050992] [2022-03-19 02:37:11,158 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:37:11,158 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:37:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash 733327351, now seen corresponding path program 1 times [2022-03-19 02:37:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:11,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342616892] [2022-03-19 02:37:11,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:11,161 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)) [2022-03-19 02:37:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:37:11,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567433667] [2022-03-19 02:37:11,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:11,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:11,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:11,166 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:11,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-19 02:37:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:11,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:37:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:11,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:37:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash 905839350, now seen corresponding path program 90 times [2022-03-19 02:37:11,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264272851] [2022-03-19 02:37:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:37:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:12,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:37:12,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264272851] [2022-03-19 02:37:12,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264272851] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:37:12,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896560317] [2022-03-19 02:37:12,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:37:12,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:12,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:12,309 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:12,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-19 02:37:18,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2022-03-19 02:37:18,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:37:18,460 WARN L261 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-19 02:37:18,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:37:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:18,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:37:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:31,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896560317] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:37:31,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:37:31,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 96 [2022-03-19 02:37:31,970 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:37:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1310050992] [2022-03-19 02:37:31,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1310050992] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:37:31,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:37:31,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2022-03-19 02:37:31,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239680761] [2022-03-19 02:37:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:37:31,970 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-19 02:37:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-19 02:37:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2397, Invalid=6723, Unknown=0, NotChecked=0, Total=9120 [2022-03-19 02:37:31,971 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:33,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:37:33,732 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2022-03-19 02:37:33,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-19 02:37:33,732 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-03-19 02:37:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:37:33,733 INFO L225 Difference]: With dead ends: 63 [2022-03-19 02:37:33,733 INFO L226 Difference]: Without dead ends: 58 [2022-03-19 02:37:33,734 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=4787, Invalid=15235, Unknown=0, NotChecked=0, Total=20022 [2022-03-19 02:37:33,734 INFO L912 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 [2022-03-19 02:37:33,735 INFO L913 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] [2022-03-19 02:37:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-03-19 02:37:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-03-19 02:37:33,737 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) [2022-03-19 02:37:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2022-03-19 02:37:33,738 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2022-03-19 02:37:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:37:33,738 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2022-03-19 02:37:33,738 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) [2022-03-19 02:37:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2022-03-19 02:37:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-03-19 02:37:33,738 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:37:33,738 INFO L500 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:37:33,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-19 02:37:33,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-03-19 02:37:34,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:34,139 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:37:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:37:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1947289956, now seen corresponding path program 91 times [2022-03-19 02:37:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:34,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1734269315] [2022-03-19 02:37:34,172 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:37:34,173 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:37:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 792432695, now seen corresponding path program 1 times [2022-03-19 02:37:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:34,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378575030] [2022-03-19 02:37:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:34,175 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)) [2022-03-19 02:37:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:37:34,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303685396] [2022-03-19 02:37:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:34,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:34,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:34,179 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:34,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-19 02:37:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:34,223 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:37:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:34,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:37:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1947289956, now seen corresponding path program 92 times [2022-03-19 02:37:34,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:34,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400287884] [2022-03-19 02:37:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:34,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:35,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:37:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:35,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:37:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400287884] [2022-03-19 02:37:35,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400287884] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:37:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506578595] [2022-03-19 02:37:35,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:37:35,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:35,290 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:35,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-19 02:37:35,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:37:35,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:37:35,344 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-19 02:37:35,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:37:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:35,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:37:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:38,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506578595] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:37:38,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:37:38,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-03-19 02:37:38,692 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:37:38,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1734269315] [2022-03-19 02:37:38,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1734269315] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:37:38,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:37:38,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2022-03-19 02:37:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152372422] [2022-03-19 02:37:38,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:37:38,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-19 02:37:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-19 02:37:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-03-19 02:37:38,694 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:37:40,422 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2022-03-19 02:37:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-19 02:37:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-03-19 02:37:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:37:40,423 INFO L225 Difference]: With dead ends: 64 [2022-03-19 02:37:40,423 INFO L226 Difference]: Without dead ends: 59 [2022-03-19 02:37:40,424 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4985, Invalid=15895, Unknown=0, NotChecked=0, Total=20880 [2022-03-19 02:37:40,424 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 02:37:40,424 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 2299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 02:37:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-19 02:37:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-03-19 02:37:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-03-19 02:37:40,429 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2022-03-19 02:37:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:37:40,429 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-03-19 02:37:40,429 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.06) internal successors, (53), 49 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-03-19 02:37:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 02:37:40,430 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:37:40,430 INFO L500 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:37:40,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-03-19 02:37:40,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-03-19 02:37:40,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,SelfDestructingSolverStorable93,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:40,835 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:37:40,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:37:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash -199985226, now seen corresponding path program 93 times [2022-03-19 02:37:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:40,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1094849666] [2022-03-19 02:37:40,956 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:37:40,956 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:37:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash 851538039, now seen corresponding path program 1 times [2022-03-19 02:37:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:40,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933947565] [2022-03-19 02:37:40,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:40,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:40,959 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)) [2022-03-19 02:37:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:37:40,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13763873] [2022-03-19 02:37:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:40,963 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:40,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-19 02:37:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:41,004 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:37:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:41,032 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:37:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash -199985226, now seen corresponding path program 94 times [2022-03-19 02:37:41,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:41,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239583740] [2022-03-19 02:37:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:41,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:42,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:37:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:37:42,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239583740] [2022-03-19 02:37:42,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239583740] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:37:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128453831] [2022-03-19 02:37:42,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:37:42,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:42,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:42,188 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:42,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-19 02:37:42,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:37:42,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:37:42,319 WARN L261 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 97 conjunts are in the unsatisfiable core [2022-03-19 02:37:42,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:37:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:42,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:37:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:45,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128453831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:37:45,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:37:45,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 100 [2022-03-19 02:37:45,839 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:37:45,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1094849666] [2022-03-19 02:37:45,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1094849666] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:37:45,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:37:45,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2022-03-19 02:37:45,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154420550] [2022-03-19 02:37:45,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:37:45,839 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-19 02:37:45,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-19 02:37:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2597, Invalid=7303, Unknown=0, NotChecked=0, Total=9900 [2022-03-19 02:37:45,840 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:37:47,692 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2022-03-19 02:37:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-19 02:37:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-03-19 02:37:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:37:47,693 INFO L225 Difference]: With dead ends: 65 [2022-03-19 02:37:47,693 INFO L226 Difference]: Without dead ends: 60 [2022-03-19 02:37:47,694 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=5187, Invalid=16569, Unknown=0, NotChecked=0, Total=21756 [2022-03-19 02:37:47,695 INFO L912 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 02:37:47,695 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 02:37:47,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-19 02:37:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-03-19 02:37:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-03-19 02:37:47,699 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2022-03-19 02:37:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:37:47,700 INFO L478 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-03-19 02:37:47,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-03-19 02:37:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 02:37:47,700 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:37:47,700 INFO L500 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:37:47,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-03-19 02:37:47,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-19 02:37:48,123 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:48,123 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:37:48,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:37:48,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1868113444, now seen corresponding path program 95 times [2022-03-19 02:37:48,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [670101596] [2022-03-19 02:37:48,147 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:37:48,147 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:37:48,147 INFO L85 PathProgramCache]: Analyzing trace with hash 910643383, now seen corresponding path program 1 times [2022-03-19 02:37:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:48,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782362291] [2022-03-19 02:37:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:48,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:48,150 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)) [2022-03-19 02:37:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:37:48,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773408309] [2022-03-19 02:37:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:48,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:48,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:48,154 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:48,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-19 02:37:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:48,196 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:37:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:37:48,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:37:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1868113444, now seen corresponding path program 96 times [2022-03-19 02:37:48,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:37:48,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066927773] [2022-03-19 02:37:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:37:48,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:37:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:37:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:37:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:37:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066927773] [2022-03-19 02:37:49,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066927773] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:37:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803309358] [2022-03-19 02:37:49,287 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:37:49,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:37:49,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:37:49,288 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:37:49,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-19 02:37:53,040 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-03-19 02:37:53,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:37:53,047 WARN L261 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 105 conjunts are in the unsatisfiable core [2022-03-19 02:37:53,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:37:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:53,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:37:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:37:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803309358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:37:57,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:37:57,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 54] total 105 [2022-03-19 02:37:57,926 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:37:57,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [670101596] [2022-03-19 02:37:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [670101596] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:37:57,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:37:57,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2022-03-19 02:37:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787091657] [2022-03-19 02:37:57,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:37:57,927 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-19 02:37:57,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:37:57,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-19 02:37:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=8165, Unknown=0, NotChecked=0, Total=10920 [2022-03-19 02:37:57,928 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:37:59,899 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2022-03-19 02:37:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-19 02:37:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-03-19 02:37:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:37:59,900 INFO L225 Difference]: With dead ends: 66 [2022-03-19 02:37:59,900 INFO L226 Difference]: Without dead ends: 61 [2022-03-19 02:37:59,901 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5448, Invalid=18114, Unknown=0, NotChecked=0, Total=23562 [2022-03-19 02:37:59,902 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2499 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-19 02:37:59,902 INFO L913 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] [2022-03-19 02:37:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-19 02:37:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-03-19 02:37:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 56 states have internal predecessors, (57), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-03-19 02:37:59,906 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2022-03-19 02:37:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:37:59,906 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-03-19 02:37:59,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:37:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-03-19 02:37:59,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 02:37:59,907 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:37:59,907 INFO L500 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:37:59,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2022-03-19 02:38:00,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-03-19 02:38:00,311 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96,SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:00,312 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:38:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:38:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2040480650, now seen corresponding path program 97 times [2022-03-19 02:38:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1257797727] [2022-03-19 02:38:00,370 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:38:00,371 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:38:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash 969748727, now seen corresponding path program 1 times [2022-03-19 02:38:00,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:00,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031450425] [2022-03-19 02:38:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:00,373 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)) [2022-03-19 02:38:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:38:00,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104205317] [2022-03-19 02:38:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:00,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:00,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:00,377 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:00,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-19 02:38:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:00,417 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:38:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:00,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:38:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2040480650, now seen corresponding path program 98 times [2022-03-19 02:38:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:00,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494894594] [2022-03-19 02:38:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:38:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:01,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:38:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494894594] [2022-03-19 02:38:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494894594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:38:01,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297308332] [2022-03-19 02:38:01,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:38:01,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:01,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:01,578 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:01,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-19 02:38:01,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:38:01,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:38:01,680 WARN L261 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 101 conjunts are in the unsatisfiable core [2022-03-19 02:38:01,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:38:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:01,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:38:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:05,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297308332] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:38:05,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:38:05,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 104 [2022-03-19 02:38:05,431 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:38:05,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1257797727] [2022-03-19 02:38:05,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1257797727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:38:05,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:38:05,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2022-03-19 02:38:05,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361262522] [2022-03-19 02:38:05,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:38:05,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-19 02:38:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-19 02:38:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2805, Invalid=7907, Unknown=0, NotChecked=0, Total=10712 [2022-03-19 02:38:05,433 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:38:07,331 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2022-03-19 02:38:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-19 02:38:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2022-03-19 02:38:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:38:07,332 INFO L225 Difference]: With dead ends: 67 [2022-03-19 02:38:07,332 INFO L226 Difference]: Without dead ends: 62 [2022-03-19 02:38:07,334 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5603, Invalid=17959, Unknown=0, NotChecked=0, Total=23562 [2022-03-19 02:38:07,335 INFO L912 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, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 02:38:07,335 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 02:38:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-19 02:38:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-03-19 02:38:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2022-03-19 02:38:07,340 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2022-03-19 02:38:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:38:07,340 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2022-03-19 02:38:07,340 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2022-03-19 02:38:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 02:38:07,341 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:38:07,341 INFO L500 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:38:07,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-19 02:38:07,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-03-19 02:38:07,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98,SelfDestructingSolverStorable99,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:07,756 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:38:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:38:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1206070556, now seen corresponding path program 99 times [2022-03-19 02:38:07,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:07,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1864048028] [2022-03-19 02:38:07,822 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:38:07,835 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:38:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1028854071, now seen corresponding path program 1 times [2022-03-19 02:38:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:07,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822245751] [2022-03-19 02:38:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:07,838 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)) [2022-03-19 02:38:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:38:07,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728261050] [2022-03-19 02:38:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:07,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:07,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:07,842 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:07,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-19 02:38:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:07,890 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:38:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:07,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:38:07,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1206070556, now seen corresponding path program 100 times [2022-03-19 02:38:07,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:07,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831679990] [2022-03-19 02:38:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:38:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:09,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:38:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831679990] [2022-03-19 02:38:09,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831679990] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:38:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813237124] [2022-03-19 02:38:09,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:38:09,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:09,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:09,081 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:09,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-19 02:38:09,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:38:09,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:38:09,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 103 conjunts are in the unsatisfiable core [2022-03-19 02:38:09,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:38:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:09,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:38:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:13,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813237124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:38:13,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:38:13,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53, 53] total 106 [2022-03-19 02:38:13,149 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:38:13,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1864048028] [2022-03-19 02:38:13,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1864048028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:38:13,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:38:13,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2022-03-19 02:38:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934003961] [2022-03-19 02:38:13,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:38:13,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-19 02:38:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-19 02:38:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2912, Invalid=8218, Unknown=0, NotChecked=0, Total=11130 [2022-03-19 02:38:13,151 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:15,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:38:15,215 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2022-03-19 02:38:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-19 02:38:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-03-19 02:38:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:38:15,216 INFO L225 Difference]: With dead ends: 68 [2022-03-19 02:38:15,216 INFO L226 Difference]: Without dead ends: 63 [2022-03-19 02:38:15,218 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5817, Invalid=18675, Unknown=0, NotChecked=0, Total=24492 [2022-03-19 02:38:15,219 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 02:38:15,219 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 2730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 02:38:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-19 02:38:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-03-19 02:38:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2022-03-19 02:38:15,224 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2022-03-19 02:38:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:38:15,224 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2022-03-19 02:38:15,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 53 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2022-03-19 02:38:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 02:38:15,224 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:38:15,225 INFO L500 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:38:15,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-03-19 02:38:15,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-03-19 02:38:15,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:15,632 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:38:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:38:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1230057162, now seen corresponding path program 101 times [2022-03-19 02:38:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:15,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1084794572] [2022-03-19 02:38:15,654 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:38:15,654 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:38:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1087959415, now seen corresponding path program 1 times [2022-03-19 02:38:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:15,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301659944] [2022-03-19 02:38:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:15,656 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)) [2022-03-19 02:38:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:38:15,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532962723] [2022-03-19 02:38:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:15,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:15,660 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:15,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-19 02:38:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:15,700 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:38:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:15,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:38:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1230057162, now seen corresponding path program 102 times [2022-03-19 02:38:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:15,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431095900] [2022-03-19 02:38:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:15,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:38:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:38:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431095900] [2022-03-19 02:38:16,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431095900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:38:16,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901743535] [2022-03-19 02:38:16,908 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:38:16,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:16,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:16,911 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:16,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-19 02:38:19,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-03-19 02:38:19,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:38:19,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 108 conjunts are in the unsatisfiable core [2022-03-19 02:38:19,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:38:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:20,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:38:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:25,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901743535] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:38:25,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:38:25,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 57] total 111 [2022-03-19 02:38:25,346 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:38:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1084794572] [2022-03-19 02:38:25,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1084794572] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:38:25,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:38:25,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2022-03-19 02:38:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652300963] [2022-03-19 02:38:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:38:25,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-19 02:38:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-19 02:38:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=9131, Unknown=0, NotChecked=0, Total=12210 [2022-03-19 02:38:25,348 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:38:27,489 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2022-03-19 02:38:27,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-19 02:38:27,489 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2022-03-19 02:38:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:38:27,490 INFO L225 Difference]: With dead ends: 69 [2022-03-19 02:38:27,490 INFO L226 Difference]: Without dead ends: 64 [2022-03-19 02:38:27,491 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1440 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6093, Invalid=20313, Unknown=0, NotChecked=0, Total=26406 [2022-03-19 02:38:27,491 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2022-03-19 02:38:27,492 INFO L913 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] [2022-03-19 02:38:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-19 02:38:27,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-03-19 02:38:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:27,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2022-03-19 02:38:27,495 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2022-03-19 02:38:27,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:38:27,495 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2022-03-19 02:38:27,495 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 54 states have internal predecessors, (58), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2022-03-19 02:38:27,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 02:38:27,496 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:38:27,496 INFO L500 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:38:27,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-03-19 02:38:27,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-03-19 02:38:27,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102,SelfDestructingSolverStorable103 [2022-03-19 02:38:27,899 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:38:27,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:38:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash 559394908, now seen corresponding path program 103 times [2022-03-19 02:38:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:27,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [457580634] [2022-03-19 02:38:27,926 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:38:27,926 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:38:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1147064759, now seen corresponding path program 1 times [2022-03-19 02:38:27,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:27,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41361051] [2022-03-19 02:38:27,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:27,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:27,929 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)) [2022-03-19 02:38:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:38:27,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468832885] [2022-03-19 02:38:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:27,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:27,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:27,933 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:27,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-19 02:38:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:27,970 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:38:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:27,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:38:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 559394908, now seen corresponding path program 104 times [2022-03-19 02:38:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:27,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368620926] [2022-03-19 02:38:27,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:38:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:38:29,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368620926] [2022-03-19 02:38:29,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368620926] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:38:29,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039603484] [2022-03-19 02:38:29,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:38:29,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:29,226 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:29,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-19 02:38:29,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:38:29,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:38:29,327 WARN L261 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 107 conjunts are in the unsatisfiable core [2022-03-19 02:38:29,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:38:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:29,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:38:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:33,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039603484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:38:33,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:38:33,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55, 55] total 110 [2022-03-19 02:38:33,552 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:38:33,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [457580634] [2022-03-19 02:38:33,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [457580634] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:38:33,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:38:33,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2022-03-19 02:38:33,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466853578] [2022-03-19 02:38:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:38:33,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-19 02:38:33,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-19 02:38:33,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3132, Invalid=8858, Unknown=0, NotChecked=0, Total=11990 [2022-03-19 02:38:33,554 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:38:35,778 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-03-19 02:38:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-19 02:38:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2022-03-19 02:38:35,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:38:35,779 INFO L225 Difference]: With dead ends: 70 [2022-03-19 02:38:35,779 INFO L226 Difference]: Without dead ends: 65 [2022-03-19 02:38:35,781 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1488 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=6257, Invalid=20149, Unknown=0, NotChecked=0, Total=26406 [2022-03-19 02:38:35,781 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 2998 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-19 02:38:35,781 INFO L913 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] [2022-03-19 02:38:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-19 02:38:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-03-19 02:38:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0166666666666666) internal successors, (61), 60 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2022-03-19 02:38:35,786 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2022-03-19 02:38:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:38:35,786 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2022-03-19 02:38:35,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:35,786 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2022-03-19 02:38:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-19 02:38:35,787 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:38:35,787 INFO L500 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:38:35,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-19 02:38:36,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-03-19 02:38:36,191 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,SelfDestructingSolverStorable105,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:36,191 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:38:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:38:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 197834230, now seen corresponding path program 105 times [2022-03-19 02:38:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1413873946] [2022-03-19 02:38:36,219 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:38:36,219 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:38:36,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1206170103, now seen corresponding path program 1 times [2022-03-19 02:38:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:36,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123761296] [2022-03-19 02:38:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:36,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:36,222 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)) [2022-03-19 02:38:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:38:36,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222988070] [2022-03-19 02:38:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:36,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:36,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:36,226 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:36,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-19 02:38:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:36,264 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:38:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:36,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:38:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 197834230, now seen corresponding path program 106 times [2022-03-19 02:38:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490442067] [2022-03-19 02:38:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:38:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:38:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490442067] [2022-03-19 02:38:37,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490442067] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:38:37,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143181237] [2022-03-19 02:38:37,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:38:37,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:37,593 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:37,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-19 02:38:37,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:38:37,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:38:37,710 WARN L261 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 109 conjunts are in the unsatisfiable core [2022-03-19 02:38:37,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:38:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:37,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:38:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:42,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143181237] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:38:42,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:38:42,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 112 [2022-03-19 02:38:42,091 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:38:42,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1413873946] [2022-03-19 02:38:42,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1413873946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:38:42,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:38:42,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2022-03-19 02:38:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654275366] [2022-03-19 02:38:42,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:38:42,091 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-19 02:38:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-19 02:38:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3245, Invalid=9187, Unknown=0, NotChecked=0, Total=12432 [2022-03-19 02:38:42,093 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:38:44,369 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2022-03-19 02:38:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-19 02:38:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-03-19 02:38:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:38:44,369 INFO L225 Difference]: With dead ends: 71 [2022-03-19 02:38:44,369 INFO L226 Difference]: Without dead ends: 66 [2022-03-19 02:38:44,371 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=6483, Invalid=20907, Unknown=0, NotChecked=0, Total=27390 [2022-03-19 02:38:44,371 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 02:38:44,372 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 02:38:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-19 02:38:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-03-19 02:38:44,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2022-03-19 02:38:44,376 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2022-03-19 02:38:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:38:44,376 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2022-03-19 02:38:44,376 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 56 states have internal predecessors, (60), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:38:44,377 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2022-03-19 02:38:44,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-19 02:38:44,377 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:38:44,377 INFO L500 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:38:44,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-19 02:38:44,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-03-19 02:38:44,779 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106,SelfDestructingSolverStorable107 [2022-03-19 02:38:44,779 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:38:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:38:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1874355100, now seen corresponding path program 107 times [2022-03-19 02:38:44,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:44,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [254312028] [2022-03-19 02:38:44,805 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:38:44,805 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:38:44,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1265275447, now seen corresponding path program 1 times [2022-03-19 02:38:44,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:44,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622200983] [2022-03-19 02:38:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:44,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:44,807 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)) [2022-03-19 02:38:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:38:44,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562384375] [2022-03-19 02:38:44,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:44,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:44,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:44,811 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-19 02:38:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:44,853 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:38:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:38:44,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:38:44,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1874355100, now seen corresponding path program 108 times [2022-03-19 02:38:44,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:38:44,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828384234] [2022-03-19 02:38:44,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:38:44,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:38:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:38:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:38:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:38:46,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828384234] [2022-03-19 02:38:46,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828384234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:38:46,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094462642] [2022-03-19 02:38:46,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:38:46,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:38:46,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:38:46,190 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:38:46,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-19 02:38:51,730 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-03-19 02:38:51,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:38:51,736 WARN L261 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 117 conjunts are in the unsatisfiable core [2022-03-19 02:38:51,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:38:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:51,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:38:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:38:57,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094462642] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:38:57,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:38:57,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57, 60] total 117 [2022-03-19 02:38:57,838 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:38:57,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [254312028] [2022-03-19 02:38:57,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [254312028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:38:57,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:38:57,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2022-03-19 02:38:57,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736285203] [2022-03-19 02:38:57,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:38:57,838 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-19 02:38:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:38:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-19 02:38:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=10151, Unknown=0, NotChecked=0, Total=13572 [2022-03-19 02:38:57,840 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:39:00,177 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-03-19 02:39:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-19 02:39:00,179 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2022-03-19 02:39:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:39:00,180 INFO L225 Difference]: With dead ends: 72 [2022-03-19 02:39:00,180 INFO L226 Difference]: Without dead ends: 67 [2022-03-19 02:39:00,182 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=6774, Invalid=22638, Unknown=0, NotChecked=0, Total=29412 [2022-03-19 02:39:00,182 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-03-19 02:39:00,182 INFO L913 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] [2022-03-19 02:39:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-19 02:39:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-03-19 02:39:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-03-19 02:39:00,187 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2022-03-19 02:39:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:39:00,187 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-03-19 02:39:00,187 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 57 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-03-19 02:39:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 02:39:00,187 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:39:00,187 INFO L500 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:39:00,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-19 02:39:00,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2022-03-19 02:39:00,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,SelfDestructingSolverStorable109,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:00,588 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:39:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:39:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1988072778, now seen corresponding path program 109 times [2022-03-19 02:39:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:00,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1552964525] [2022-03-19 02:39:00,624 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:39:00,625 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:39:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1324380791, now seen corresponding path program 1 times [2022-03-19 02:39:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:00,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376093310] [2022-03-19 02:39:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:00,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:00,627 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)) [2022-03-19 02:39:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:39:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353236942] [2022-03-19 02:39:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:00,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:00,630 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:00,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-19 02:39:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:00,671 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:39:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:00,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:39:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1988072778, now seen corresponding path program 110 times [2022-03-19 02:39:00,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:00,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659227947] [2022-03-19 02:39:00,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:00,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:39:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:02,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:39:02,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659227947] [2022-03-19 02:39:02,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659227947] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:39:02,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653088678] [2022-03-19 02:39:02,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:39:02,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:02,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:02,065 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:02,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-19 02:39:02,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:39:02,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:39:02,123 WARN L261 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 113 conjunts are in the unsatisfiable core [2022-03-19 02:39:02,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:39:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:02,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:39:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:06,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653088678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:39:06,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:39:06,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 116 [2022-03-19 02:39:06,857 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:39:06,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1552964525] [2022-03-19 02:39:06,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1552964525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:39:06,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:39:06,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2022-03-19 02:39:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382335687] [2022-03-19 02:39:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:39:06,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-19 02:39:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-19 02:39:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3477, Invalid=9863, Unknown=0, NotChecked=0, Total=13340 [2022-03-19 02:39:06,859 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:39:09,271 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2022-03-19 02:39:09,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-03-19 02:39:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2022-03-19 02:39:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:39:09,271 INFO L225 Difference]: With dead ends: 73 [2022-03-19 02:39:09,271 INFO L226 Difference]: Without dead ends: 68 [2022-03-19 02:39:09,273 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=6947, Invalid=22465, Unknown=0, NotChecked=0, Total=29412 [2022-03-19 02:39:09,273 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 02:39:09,273 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 02:39:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-19 02:39:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-03-19 02:39:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2022-03-19 02:39:09,277 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2022-03-19 02:39:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:39:09,278 INFO L478 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2022-03-19 02:39:09,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 58 states have internal predecessors, (62), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2022-03-19 02:39:09,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 02:39:09,279 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:39:09,279 INFO L500 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:39:09,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-03-19 02:39:09,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-03-19 02:39:09,684 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-19 02:39:09,684 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:39:09,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:39:09,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1464252708, now seen corresponding path program 111 times [2022-03-19 02:39:09,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:09,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1551107752] [2022-03-19 02:39:09,714 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:39:09,714 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:39:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1383486135, now seen corresponding path program 1 times [2022-03-19 02:39:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:09,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72297340] [2022-03-19 02:39:09,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:09,717 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)) [2022-03-19 02:39:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:39:09,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244064856] [2022-03-19 02:39:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:09,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:09,721 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:09,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-19 02:39:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:09,761 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:39:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:09,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:39:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1464252708, now seen corresponding path program 112 times [2022-03-19 02:39:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:09,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425495722] [2022-03-19 02:39:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:39:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:39:11,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425495722] [2022-03-19 02:39:11,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425495722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:39:11,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676404035] [2022-03-19 02:39:11,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:39:11,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:11,195 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:11,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-19 02:39:11,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:39:11,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:39:11,306 WARN L261 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 115 conjunts are in the unsatisfiable core [2022-03-19 02:39:11,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:39:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:11,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:39:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676404035] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:39:16,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:39:16,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 118 [2022-03-19 02:39:16,160 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:39:16,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1551107752] [2022-03-19 02:39:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1551107752] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:39:16,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:39:16,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2022-03-19 02:39:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999545152] [2022-03-19 02:39:16,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:39:16,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-19 02:39:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:16,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-19 02:39:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3596, Invalid=10210, Unknown=0, NotChecked=0, Total=13806 [2022-03-19 02:39:16,162 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:39:18,676 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2022-03-19 02:39:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-19 02:39:18,676 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2022-03-19 02:39:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:39:18,677 INFO L225 Difference]: With dead ends: 74 [2022-03-19 02:39:18,677 INFO L226 Difference]: Without dead ends: 69 [2022-03-19 02:39:18,679 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=7185, Invalid=23265, Unknown=0, NotChecked=0, Total=30450 [2022-03-19 02:39:18,679 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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 [2022-03-19 02:39:18,680 INFO L913 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] [2022-03-19 02:39:18,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-03-19 02:39:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-03-19 02:39:18,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2022-03-19 02:39:18,685 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2022-03-19 02:39:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:39:18,685 INFO L478 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2022-03-19 02:39:18,685 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.05) internal successors, (63), 59 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2022-03-19 02:39:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-19 02:39:18,685 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:39:18,685 INFO L500 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:39:18,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-03-19 02:39:18,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-19 02:39:19,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112,SelfDestructingSolverStorable113 [2022-03-19 02:39:19,088 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:39:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:39:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1889267574, now seen corresponding path program 113 times [2022-03-19 02:39:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1272987739] [2022-03-19 02:39:19,118 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:39:19,118 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:39:19,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1442591479, now seen corresponding path program 1 times [2022-03-19 02:39:19,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:19,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770002382] [2022-03-19 02:39:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:19,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:19,125 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)) [2022-03-19 02:39:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:39:19,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660966093] [2022-03-19 02:39:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:19,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:19,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:19,129 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:19,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-19 02:39:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:19,167 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:39:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:19,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:39:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1889267574, now seen corresponding path program 114 times [2022-03-19 02:39:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:19,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530756257] [2022-03-19 02:39:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:39:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:20,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:39:20,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530756257] [2022-03-19 02:39:20,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530756257] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:39:20,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660720822] [2022-03-19 02:39:20,636 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:39:20,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:20,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:20,637 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-19 02:39:26,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 30 check-sat command(s) [2022-03-19 02:39:26,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:39:26,129 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 117 conjunts are in the unsatisfiable core [2022-03-19 02:39:26,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:39:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:26,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:39:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:31,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660720822] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:39:31,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:39:31,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60, 60] total 120 [2022-03-19 02:39:31,150 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:39:31,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1272987739] [2022-03-19 02:39:31,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1272987739] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:39:31,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:39:31,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2022-03-19 02:39:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081809061] [2022-03-19 02:39:31,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:39:31,151 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-19 02:39:31,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:31,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-19 02:39:31,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3717, Invalid=10563, Unknown=0, NotChecked=0, Total=14280 [2022-03-19 02:39:31,152 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:39:33,754 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-03-19 02:39:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-19 02:39:33,754 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-03-19 02:39:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:39:33,755 INFO L225 Difference]: With dead ends: 75 [2022-03-19 02:39:33,755 INFO L226 Difference]: Without dead ends: 70 [2022-03-19 02:39:33,757 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=7427, Invalid=24079, Unknown=0, NotChecked=0, Total=31506 [2022-03-19 02:39:33,757 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 3483 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-19 02:39:33,757 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 188 Invalid, 3600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-19 02:39:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-03-19 02:39:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-03-19 02:39:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2022-03-19 02:39:33,762 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2022-03-19 02:39:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:39:33,762 INFO L478 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2022-03-19 02:39:33,763 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 60 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2022-03-19 02:39:33,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 02:39:33,763 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:39:33,763 INFO L500 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:39:33,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-19 02:39:33,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-19 02:39:34,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:34,164 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:39:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:39:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1525786084, now seen corresponding path program 115 times [2022-03-19 02:39:34,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:34,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1999994186] [2022-03-19 02:39:34,187 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:39:34,188 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:39:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1501696823, now seen corresponding path program 1 times [2022-03-19 02:39:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:34,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376259608] [2022-03-19 02:39:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:34,190 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)) [2022-03-19 02:39:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:39:34,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512391326] [2022-03-19 02:39:34,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:34,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:34,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:34,193 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:34,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-19 02:39:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:34,237 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:39:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:34,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:39:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1525786084, now seen corresponding path program 116 times [2022-03-19 02:39:34,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:34,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128679345] [2022-03-19 02:39:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:39:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:35,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:39:35,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128679345] [2022-03-19 02:39:35,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128679345] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:39:35,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075566670] [2022-03-19 02:39:35,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:39:35,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:35,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:35,780 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:35,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-19 02:39:35,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:39:35,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:39:35,844 WARN L261 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 119 conjunts are in the unsatisfiable core [2022-03-19 02:39:35,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:39:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:36,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:39:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075566670] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:39:41,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:39:41,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 122 [2022-03-19 02:39:41,099 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:39:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1999994186] [2022-03-19 02:39:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1999994186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:39:41,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:39:41,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2022-03-19 02:39:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103379803] [2022-03-19 02:39:41,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:39:41,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-19 02:39:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-19 02:39:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3840, Invalid=10922, Unknown=0, NotChecked=0, Total=14762 [2022-03-19 02:39:41,101 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:39:43,781 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2022-03-19 02:39:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-19 02:39:43,781 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-03-19 02:39:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:39:43,782 INFO L225 Difference]: With dead ends: 76 [2022-03-19 02:39:43,782 INFO L226 Difference]: Without dead ends: 71 [2022-03-19 02:39:43,784 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=7673, Invalid=24907, Unknown=0, NotChecked=0, Total=32580 [2022-03-19 02:39:43,784 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-03-19 02:39:43,784 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 58 Invalid, 3588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-19 02:39:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-19 02:39:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-19 02:39:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2022-03-19 02:39:43,787 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2022-03-19 02:39:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:39:43,788 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2022-03-19 02:39:43,788 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.0483870967741935) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:43,788 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2022-03-19 02:39:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 02:39:43,788 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:39:43,788 INFO L500 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:39:43,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-19 02:39:44,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-03-19 02:39:44,194 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116,SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:44,194 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:39:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:39:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash -18267082, now seen corresponding path program 117 times [2022-03-19 02:39:44,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:44,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [808499809] [2022-03-19 02:39:44,220 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:39:44,220 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:39:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1560802167, now seen corresponding path program 1 times [2022-03-19 02:39:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834422247] [2022-03-19 02:39:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:44,223 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)) [2022-03-19 02:39:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:39:44,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211067591] [2022-03-19 02:39:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:44,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:44,226 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:44,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-19 02:39:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:44,265 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:39:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:44,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:39:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -18267082, now seen corresponding path program 118 times [2022-03-19 02:39:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:44,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477181950] [2022-03-19 02:39:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:39:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:45,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:39:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477181950] [2022-03-19 02:39:45,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477181950] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:39:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807003905] [2022-03-19 02:39:45,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:39:45,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:45,842 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:45,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-19 02:39:45,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:39:45,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:39:45,937 WARN L261 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 121 conjunts are in the unsatisfiable core [2022-03-19 02:39:45,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:39:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:46,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:39:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:51,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807003905] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:39:51,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:39:51,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62, 62] total 124 [2022-03-19 02:39:51,363 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:39:51,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [808499809] [2022-03-19 02:39:51,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [808499809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:39:51,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:39:51,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2022-03-19 02:39:51,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956083074] [2022-03-19 02:39:51,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:39:51,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-19 02:39:51,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:51,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-19 02:39:51,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3965, Invalid=11287, Unknown=0, NotChecked=0, Total=15252 [2022-03-19 02:39:51,364 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:39:54,177 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2022-03-19 02:39:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-19 02:39:54,177 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2022-03-19 02:39:54,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:39:54,178 INFO L225 Difference]: With dead ends: 77 [2022-03-19 02:39:54,178 INFO L226 Difference]: Without dead ends: 72 [2022-03-19 02:39:54,180 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=7923, Invalid=25749, Unknown=0, NotChecked=0, Total=33672 [2022-03-19 02:39:54,180 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 02:39:54,180 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 218 Invalid, 3868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 02:39:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-19 02:39:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-03-19 02:39:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2022-03-19 02:39:54,184 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2022-03-19 02:39:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:39:54,184 INFO L478 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2022-03-19 02:39:54,184 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 02:39:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2022-03-19 02:39:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 02:39:54,184 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:39:54,185 INFO L500 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:39:54,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-19 02:39:54,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-03-19 02:39:54,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119,SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:54,600 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:39:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:39:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash -529818276, now seen corresponding path program 119 times [2022-03-19 02:39:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:39:54,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [722798812] [2022-03-19 02:39:54,629 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:39:54,630 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:39:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1619907511, now seen corresponding path program 1 times [2022-03-19 02:39:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:54,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337495217] [2022-03-19 02:39:54,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:54,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:54,632 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)) [2022-03-19 02:39:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:39:54,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892154194] [2022-03-19 02:39:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:54,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:54,636 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:54,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-19 02:39:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:54,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:39:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:39:54,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:39:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -529818276, now seen corresponding path program 120 times [2022-03-19 02:39:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:39:54,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007532] [2022-03-19 02:39:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:39:54,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:39:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:56,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:39:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:39:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:39:56,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:39:56,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007532] [2022-03-19 02:39:56,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007532] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:39:56,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995901755] [2022-03-19 02:39:56,314 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:39:56,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:39:56,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:39:56,315 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 02:39:56,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-19 02:40:24,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-03-19 02:40:24,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:40:24,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 129 conjunts are in the unsatisfiable core [2022-03-19 02:40:24,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:40:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:24,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:40:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:31,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995901755] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:40:31,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:40:31,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63, 66] total 129 [2022-03-19 02:40:31,514 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:40:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [722798812] [2022-03-19 02:40:31,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [722798812] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:40:31,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:40:31,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2022-03-19 02:40:31,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147398908] [2022-03-19 02:40:31,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:40:31,514 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-19 02:40:31,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:40:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-19 02:40:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12353, Unknown=0, NotChecked=0, Total=16512 [2022-03-19 02:40:31,515 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) [2022-03-19 02:40:34,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:40:34,476 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2022-03-19 02:40:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-03-19 02:40:34,476 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 [2022-03-19 02:40:34,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:40:34,477 INFO L225 Difference]: With dead ends: 78 [2022-03-19 02:40:34,477 INFO L226 Difference]: Without dead ends: 73 [2022-03-19 02:40:34,478 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=8244, Invalid=27666, Unknown=0, NotChecked=0, Total=35910 [2022-03-19 02:40:34,478 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 3967 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 02:40:34,478 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 318 Invalid, 4090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3967 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 02:40:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-19 02:40:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-03-19 02:40:34,481 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) [2022-03-19 02:40:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-03-19 02:40:34,482 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2022-03-19 02:40:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:40:34,482 INFO L478 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-03-19 02:40:34,482 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) [2022-03-19 02:40:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-03-19 02:40:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 02:40:34,482 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:40:34,482 INFO L500 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:40:34,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-03-19 02:40:34,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-19 02:40:34,883 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 [2022-03-19 02:40:34,883 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:40:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:40:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash 791963894, now seen corresponding path program 121 times [2022-03-19 02:40:34,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:40:34,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [900697444] [2022-03-19 02:40:34,916 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:40:34,916 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:40:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1679012855, now seen corresponding path program 1 times [2022-03-19 02:40:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:40:34,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952524010] [2022-03-19 02:40:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:40:34,919 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)) [2022-03-19 02:40:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:40:34,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776890540] [2022-03-19 02:40:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:34,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:40:34,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:40:34,923 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) [2022-03-19 02:40:34,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-19 02:40:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:40:34,971 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:40:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:40:34,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:40:34,980 INFO L85 PathProgramCache]: Analyzing trace with hash 791963894, now seen corresponding path program 122 times [2022-03-19 02:40:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:40:34,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923478762] [2022-03-19 02:40:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:40:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:40:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:40:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:40:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:36,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:40:36,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923478762] [2022-03-19 02:40:36,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923478762] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:40:36,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944900512] [2022-03-19 02:40:36,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:40:36,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:40:36,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:40:36,648 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) [2022-03-19 02:40:36,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-19 02:40:36,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:40:36,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:40:36,714 WARN L261 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 125 conjunts are in the unsatisfiable core [2022-03-19 02:40:36,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:40:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:36,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:40:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:42,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944900512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:40:42,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:40:42,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 128 [2022-03-19 02:40:42,458 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:40:42,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [900697444] [2022-03-19 02:40:42,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [900697444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:40:42,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:40:42,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2022-03-19 02:40:42,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650430370] [2022-03-19 02:40:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:40:42,458 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-19 02:40:42,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:40:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-19 02:40:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4221, Invalid=12035, Unknown=0, NotChecked=0, Total=16256 [2022-03-19 02:40:42,460 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) [2022-03-19 02:40:45,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:40:45,660 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-03-19 02:40:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-19 02:40:45,660 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 [2022-03-19 02:40:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:40:45,661 INFO L225 Difference]: With dead ends: 79 [2022-03-19 02:40:45,661 INFO L226 Difference]: Without dead ends: 74 [2022-03-19 02:40:45,662 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=8435, Invalid=27475, Unknown=0, NotChecked=0, Total=35910 [2022-03-19 02:40:45,663 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:40:45,663 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 283 Invalid, 4179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 02:40:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-19 02:40:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-03-19 02:40:45,667 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) [2022-03-19 02:40:45,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2022-03-19 02:40:45,668 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2022-03-19 02:40:45,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:40:45,668 INFO L478 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2022-03-19 02:40:45,668 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) [2022-03-19 02:40:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2022-03-19 02:40:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 02:40:45,670 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:40:45,670 INFO L500 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:40:45,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-03-19 02:40:45,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-03-19 02:40:46,075 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 [2022-03-19 02:40:46,075 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:40:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:40:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1182461796, now seen corresponding path program 123 times [2022-03-19 02:40:46,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:40:46,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [29315810] [2022-03-19 02:40:46,097 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:40:46,098 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:40:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1738118199, now seen corresponding path program 1 times [2022-03-19 02:40:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:40:46,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832835727] [2022-03-19 02:40:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:40:46,101 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)) [2022-03-19 02:40:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:40:46,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522526688] [2022-03-19 02:40:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:40:46,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:40:46,105 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) [2022-03-19 02:40:46,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-19 02:40:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:40:46,144 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:40:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:40:46,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:40:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1182461796, now seen corresponding path program 124 times [2022-03-19 02:40:46,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:40:46,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246972116] [2022-03-19 02:40:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:46,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:40:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:40:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:40:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:40:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:47,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:40:47,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246972116] [2022-03-19 02:40:47,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246972116] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:40:47,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863031330] [2022-03-19 02:40:47,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:40:47,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:40:47,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:40:47,846 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) [2022-03-19 02:40:47,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-19 02:40:47,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:40:47,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:40:47,940 WARN L261 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 127 conjunts are in the unsatisfiable core [2022-03-19 02:40:47,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:40:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:48,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:40:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:53,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863031330] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:40:53,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:40:53,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65, 65] total 130 [2022-03-19 02:40:53,829 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:40:53,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [29315810] [2022-03-19 02:40:53,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [29315810] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:40:53,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:40:53,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2022-03-19 02:40:53,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835637853] [2022-03-19 02:40:53,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:40:53,830 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-03-19 02:40:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:40:53,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-03-19 02:40:53,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4352, Invalid=12418, Unknown=0, NotChecked=0, Total=16770 [2022-03-19 02:40:53,831 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) [2022-03-19 02:40:56,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:40:56,811 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2022-03-19 02:40:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-19 02:40:56,812 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 [2022-03-19 02:40:56,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:40:56,812 INFO L225 Difference]: With dead ends: 80 [2022-03-19 02:40:56,812 INFO L226 Difference]: Without dead ends: 75 [2022-03-19 02:40:56,813 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=8697, Invalid=28359, Unknown=0, NotChecked=0, Total=37056 [2022-03-19 02:40:56,814 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 02:40:56,814 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 4060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 02:40:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-03-19 02:40:56,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-03-19 02:40:56,819 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) [2022-03-19 02:40:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-03-19 02:40:56,819 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2022-03-19 02:40:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:40:56,819 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-03-19 02:40:56,819 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) [2022-03-19 02:40:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-03-19 02:40:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 02:40:56,820 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:40:56,820 INFO L500 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:40:56,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-03-19 02:40:57,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-19 02:40:57,242 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 [2022-03-19 02:40:57,243 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:40:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:40:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2034851254, now seen corresponding path program 125 times [2022-03-19 02:40:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:40:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1412788084] [2022-03-19 02:40:57,263 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:40:57,264 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:40:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1797223543, now seen corresponding path program 1 times [2022-03-19 02:40:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:40:57,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220355762] [2022-03-19 02:40:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:57,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:40:57,266 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)) [2022-03-19 02:40:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:40:57,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113590118] [2022-03-19 02:40:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:57,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:40:57,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:40:57,269 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) [2022-03-19 02:40:57,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-19 02:40:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:40:57,316 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:40:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:40:57,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:40:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2034851254, now seen corresponding path program 126 times [2022-03-19 02:40:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:40:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630653133] [2022-03-19 02:40:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:40:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:40:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:40:59,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:40:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:40:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:40:59,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:40:59,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630653133] [2022-03-19 02:40:59,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630653133] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:40:59,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315637110] [2022-03-19 02:40:59,064 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:40:59,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:40:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:40:59,065 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) [2022-03-19 02:40:59,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-19 02:41:22,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-03-19 02:41:22,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:41:22,787 WARN L261 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 135 conjunts are in the unsatisfiable core [2022-03-19 02:41:22,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:41:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:23,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:41:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:30,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315637110] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:41:30,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:41:30,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 69] total 135 [2022-03-19 02:41:30,833 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:41:30,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1412788084] [2022-03-19 02:41:30,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1412788084] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:41:30,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:41:30,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2022-03-19 02:41:30,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397385191] [2022-03-19 02:41:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:41:30,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-19 02:41:30,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:41:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-19 02:41:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13535, Unknown=0, NotChecked=0, Total=18090 [2022-03-19 02:41:30,835 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) [2022-03-19 02:41:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:41:34,050 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2022-03-19 02:41:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-19 02:41:34,051 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 [2022-03-19 02:41:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:41:34,051 INFO L225 Difference]: With dead ends: 81 [2022-03-19 02:41:34,051 INFO L226 Difference]: Without dead ends: 76 [2022-03-19 02:41:34,054 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2154 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=9033, Invalid=30369, Unknown=0, NotChecked=0, Total=39402 [2022-03-19 02:41:34,054 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 4259 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-19 02:41:34,054 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 238 Invalid, 4388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 4259 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-19 02:41:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-19 02:41:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-19 02:41:34,059 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) [2022-03-19 02:41:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2022-03-19 02:41:34,060 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2022-03-19 02:41:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:41:34,060 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2022-03-19 02:41:34,060 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) [2022-03-19 02:41:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2022-03-19 02:41:34,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 02:41:34,060 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:41:34,061 INFO L500 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:41:34,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-03-19 02:41:34,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-03-19 02:41:34,466 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 [2022-03-19 02:41:34,466 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:41:34,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:41:34,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1307659300, now seen corresponding path program 127 times [2022-03-19 02:41:34,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:41:34,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1180271530] [2022-03-19 02:41:36,528 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:41:36,528 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:41:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1856328887, now seen corresponding path program 1 times [2022-03-19 02:41:36,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:41:36,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835760156] [2022-03-19 02:41:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:41:36,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:41:36,531 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)) [2022-03-19 02:41:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:41:36,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315972729] [2022-03-19 02:41:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:41:36,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:41:36,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:41:36,535 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) [2022-03-19 02:41:36,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-19 02:41:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:41:36,603 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:41:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:41:36,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:41:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1307659300, now seen corresponding path program 128 times [2022-03-19 02:41:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:41:36,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368049720] [2022-03-19 02:41:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:41:36,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:41:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:41:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:41:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:41:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:38,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:41:38,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368049720] [2022-03-19 02:41:38,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368049720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:41:38,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788567993] [2022-03-19 02:41:38,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:41:38,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:41:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:41:38,578 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) [2022-03-19 02:41:38,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-19 02:41:38,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:41:38,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:41:38,721 WARN L261 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 131 conjunts are in the unsatisfiable core [2022-03-19 02:41:38,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:41:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:39,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:41:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:45,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788567993] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:41:45,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:41:45,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 67] total 134 [2022-03-19 02:41:45,062 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:41:45,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1180271530] [2022-03-19 02:41:45,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1180271530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:41:45,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:41:45,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2022-03-19 02:41:45,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379713659] [2022-03-19 02:41:45,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:41:45,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-03-19 02:41:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:41:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-03-19 02:41:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4620, Invalid=13202, Unknown=0, NotChecked=0, Total=17822 [2022-03-19 02:41:45,064 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) [2022-03-19 02:41:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:41:48,286 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2022-03-19 02:41:48,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-03-19 02:41:48,287 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 [2022-03-19 02:41:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:41:48,287 INFO L225 Difference]: With dead ends: 82 [2022-03-19 02:41:48,287 INFO L226 Difference]: Without dead ends: 77 [2022-03-19 02:41:48,290 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=9233, Invalid=30169, Unknown=0, NotChecked=0, Total=39402 [2022-03-19 02:41:48,290 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-03-19 02:41:48,291 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 4373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-19 02:41:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-03-19 02:41:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-03-19 02:41:48,294 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) [2022-03-19 02:41:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-03-19 02:41:48,294 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2022-03-19 02:41:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:41:48,294 INFO L478 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-03-19 02:41:48,294 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) [2022-03-19 02:41:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-03-19 02:41:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-03-19 02:41:48,295 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:41:48,295 INFO L500 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:41:48,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-03-19 02:41:48,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-19 02:41:48,695 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 [2022-03-19 02:41:48,696 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:41:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:41:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1846271370, now seen corresponding path program 129 times [2022-03-19 02:41:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:41:48,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [477588914] [2022-03-19 02:41:48,729 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:41:48,730 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:41:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1915434231, now seen corresponding path program 1 times [2022-03-19 02:41:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:41:48,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046990153] [2022-03-19 02:41:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:41:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:41:48,732 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)) [2022-03-19 02:41:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:41:48,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014273764] [2022-03-19 02:41:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:41:48,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:41:48,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:41:48,740 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) [2022-03-19 02:41:48,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-19 02:41:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:41:48,782 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:41:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:41:48,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:41:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1846271370, now seen corresponding path program 130 times [2022-03-19 02:41:48,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:41:48,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996967539] [2022-03-19 02:41:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:41:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:41:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:41:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:41:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:41:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:50,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:41:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996967539] [2022-03-19 02:41:50,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996967539] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:41:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989898002] [2022-03-19 02:41:50,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:41:50,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:41:50,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:41:50,679 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) [2022-03-19 02:41:50,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-19 02:41:51,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:41:51,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:41:51,093 WARN L261 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 133 conjunts are in the unsatisfiable core [2022-03-19 02:41:51,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:41:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:51,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:41:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:41:57,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989898002] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:41:57,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:41:57,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 136 [2022-03-19 02:41:57,605 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:41:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [477588914] [2022-03-19 02:41:57,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [477588914] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:41:57,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:41:57,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2022-03-19 02:41:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666904374] [2022-03-19 02:41:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:41:57,605 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-19 02:41:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:41:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-19 02:41:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=13603, Unknown=0, NotChecked=0, Total=18360 [2022-03-19 02:41:57,606 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) [2022-03-19 02:42:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:42:00,914 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-03-19 02:42:00,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-19 02:42:00,914 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 [2022-03-19 02:42:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:42:00,915 INFO L225 Difference]: With dead ends: 83 [2022-03-19 02:42:00,915 INFO L226 Difference]: Without dead ends: 78 [2022-03-19 02:42:00,918 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2281 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=9507, Invalid=31095, Unknown=0, NotChecked=0, Total=40602 [2022-03-19 02:42:00,918 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4382 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:42:00,918 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 4515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 4382 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 02:42:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-19 02:42:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-03-19 02:42:00,924 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) [2022-03-19 02:42:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2022-03-19 02:42:00,924 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2022-03-19 02:42:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:42:00,924 INFO L478 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2022-03-19 02:42:00,924 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) [2022-03-19 02:42:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2022-03-19 02:42:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 02:42:00,925 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:42:00,925 INFO L500 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:42:00,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-19 02:42:01,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-03-19 02:42:01,339 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 [2022-03-19 02:42:01,339 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:42:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:42:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1363376356, now seen corresponding path program 131 times [2022-03-19 02:42:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:42:01,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [849574627] [2022-03-19 02:42:01,366 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:42:01,366 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:42:01,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1974539575, now seen corresponding path program 1 times [2022-03-19 02:42:01,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:42:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356776865] [2022-03-19 02:42:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:42:01,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:42:01,368 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)) [2022-03-19 02:42:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:42:01,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514966636] [2022-03-19 02:42:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:42:01,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:42:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:42:01,372 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) [2022-03-19 02:42:01,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-19 02:42:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:42:01,411 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:42:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:42:01,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:42:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1363376356, now seen corresponding path program 132 times [2022-03-19 02:42:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:42:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267944517] [2022-03-19 02:42:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:42:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:42:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:42:03,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:42:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:42:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:42:03,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:42:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267944517] [2022-03-19 02:42:03,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267944517] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:42:03,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795758226] [2022-03-19 02:42:03,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:42:03,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:42:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:42:03,370 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) [2022-03-19 02:42:03,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-19 02:43:01,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-03-19 02:43:01,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:43:02,010 WARN L261 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 141 conjunts are in the unsatisfiable core [2022-03-19 02:43:02,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:43:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:02,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:43:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795758226] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:43:10,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:43:10,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69, 72] total 141 [2022-03-19 02:43:10,883 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:43:10,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [849574627] [2022-03-19 02:43:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [849574627] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:43:10,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:43:10,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2022-03-19 02:43:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383291328] [2022-03-19 02:43:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:43:10,884 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-03-19 02:43:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:43:10,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-03-19 02:43:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14771, Unknown=0, NotChecked=0, Total=19740 [2022-03-19 02:43:10,886 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) [2022-03-19 02:43:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:43:14,398 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-03-19 02:43:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-03-19 02:43:14,398 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 [2022-03-19 02:43:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:43:14,399 INFO L225 Difference]: With dead ends: 84 [2022-03-19 02:43:14,399 INFO L226 Difference]: Without dead ends: 79 [2022-03-19 02:43:14,401 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2355 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=9858, Invalid=33198, Unknown=0, NotChecked=0, Total=43056 [2022-03-19 02:43:14,401 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 02:43:14,401 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 4659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 02:43:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-03-19 02:43:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-03-19 02:43:14,406 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) [2022-03-19 02:43:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2022-03-19 02:43:14,407 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2022-03-19 02:43:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:43:14,407 INFO L478 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2022-03-19 02:43:14,407 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) [2022-03-19 02:43:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2022-03-19 02:43:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 02:43:14,408 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:43:14,408 INFO L500 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:43:14,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-03-19 02:43:14,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-03-19 02:43:14,815 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 [2022-03-19 02:43:14,816 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:43:14,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:43:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash 721467190, now seen corresponding path program 133 times [2022-03-19 02:43:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:43:14,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [262488881] [2022-03-19 02:43:14,852 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:43:14,853 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:43:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2033644919, now seen corresponding path program 1 times [2022-03-19 02:43:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:43:14,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907468881] [2022-03-19 02:43:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:43:14,855 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)) [2022-03-19 02:43:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:43:14,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266959322] [2022-03-19 02:43:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:14,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:43:14,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:43:14,860 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) [2022-03-19 02:43:14,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-19 02:43:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:43:14,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:43:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:43:14,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:43:14,936 INFO L85 PathProgramCache]: Analyzing trace with hash 721467190, now seen corresponding path program 134 times [2022-03-19 02:43:14,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:43:14,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838089088] [2022-03-19 02:43:14,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:14,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:43:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:43:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:43:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:43:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:43:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838089088] [2022-03-19 02:43:16,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838089088] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:43:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855649206] [2022-03-19 02:43:16,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:43:16,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:43:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:43:16,941 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) [2022-03-19 02:43:16,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-19 02:43:17,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:43:17,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:43:17,058 WARN L261 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 137 conjunts are in the unsatisfiable core [2022-03-19 02:43:17,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:43:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:17,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:43:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:23,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855649206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:43:23,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:43:23,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70, 70] total 140 [2022-03-19 02:43:23,992 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:43:23,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [262488881] [2022-03-19 02:43:23,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [262488881] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:43:23,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:43:23,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2022-03-19 02:43:23,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611223428] [2022-03-19 02:43:23,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:43:23,992 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-19 02:43:23,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:43:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-19 02:43:23,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5037, Invalid=14423, Unknown=0, NotChecked=0, Total=19460 [2022-03-19 02:43:23,994 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) [2022-03-19 02:43:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:43:27,527 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-03-19 02:43:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-19 02:43:27,528 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 [2022-03-19 02:43:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:43:27,528 INFO L225 Difference]: With dead ends: 85 [2022-03-19 02:43:27,528 INFO L226 Difference]: Without dead ends: 80 [2022-03-19 02:43:27,531 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2418 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=10067, Invalid=32989, Unknown=0, NotChecked=0, Total=43056 [2022-03-19 02:43:27,531 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 4813 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-03-19 02:43:27,532 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 268 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 4813 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-19 02:43:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-19 02:43:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-19 02:43:27,537 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) [2022-03-19 02:43:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2022-03-19 02:43:27,538 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2022-03-19 02:43:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:43:27,538 INFO L478 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2022-03-19 02:43:27,538 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) [2022-03-19 02:43:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2022-03-19 02:43:27,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 02:43:27,539 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:43:27,539 INFO L500 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:43:27,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-19 02:43:27,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-03-19 02:43:27,959 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 [2022-03-19 02:43:27,959 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:43:27,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:43:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 927107676, now seen corresponding path program 135 times [2022-03-19 02:43:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:43:27,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1954851089] [2022-03-19 02:43:27,987 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:43:27,988 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:43:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2092750263, now seen corresponding path program 1 times [2022-03-19 02:43:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:43:27,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183656133] [2022-03-19 02:43:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:43:27,990 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)) [2022-03-19 02:43:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:43:27,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598644477] [2022-03-19 02:43:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:27,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:43:27,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:43:27,995 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) [2022-03-19 02:43:27,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-19 02:43:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:43:28,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:43:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:43:28,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:43:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 927107676, now seen corresponding path program 136 times [2022-03-19 02:43:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:43:28,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485144771] [2022-03-19 02:43:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:43:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:43:30,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:43:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:43:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:43:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485144771] [2022-03-19 02:43:30,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485144771] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:43:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732258913] [2022-03-19 02:43:30,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:43:30,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:43:30,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:43:30,066 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) [2022-03-19 02:43:30,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-19 02:43:30,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:43:30,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:43:30,198 WARN L261 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 139 conjunts are in the unsatisfiable core [2022-03-19 02:43:30,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:43:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:30,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:43:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:37,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732258913] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:43:37,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:43:37,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 142 [2022-03-19 02:43:37,321 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:43:37,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1954851089] [2022-03-19 02:43:37,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1954851089] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:43:37,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:43:37,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2022-03-19 02:43:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095663314] [2022-03-19 02:43:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:43:37,321 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-19 02:43:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:43:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-19 02:43:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5180, Invalid=14842, Unknown=0, NotChecked=0, Total=20022 [2022-03-19 02:43:37,323 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) [2022-03-19 02:43:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:43:40,996 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-03-19 02:43:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-03-19 02:43:40,996 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 [2022-03-19 02:43:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:43:40,997 INFO L225 Difference]: With dead ends: 86 [2022-03-19 02:43:40,997 INFO L226 Difference]: Without dead ends: 81 [2022-03-19 02:43:40,999 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=10353, Invalid=33957, Unknown=0, NotChecked=0, Total=44310 [2022-03-19 02:43:40,999 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:43:40,999 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 343 Invalid, 5163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 02:43:40,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-03-19 02:43:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-03-19 02:43:41,005 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) [2022-03-19 02:43:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2022-03-19 02:43:41,005 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2022-03-19 02:43:41,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:43:41,005 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2022-03-19 02:43:41,005 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) [2022-03-19 02:43:41,005 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2022-03-19 02:43:41,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 02:43:41,006 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:43:41,006 INFO L500 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:43:41,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Forceful destruction successful, exit code 0 [2022-03-19 02:43:41,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-19 02:43:41,419 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 [2022-03-19 02:43:41,420 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:43:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:43:41,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1287971850, now seen corresponding path program 137 times [2022-03-19 02:43:41,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:43:41,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [151273509] [2022-03-19 02:43:41,446 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:43:41,447 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:43:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2143111689, now seen corresponding path program 1 times [2022-03-19 02:43:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:43:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408695322] [2022-03-19 02:43:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:43:41,449 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)) [2022-03-19 02:43:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:43:41,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771591612] [2022-03-19 02:43:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:41,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:43:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:43:41,453 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) [2022-03-19 02:43:41,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-19 02:43:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:43:41,494 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:43:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:43:41,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:43:41,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1287971850, now seen corresponding path program 138 times [2022-03-19 02:43:41,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:43:41,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779292156] [2022-03-19 02:43:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:43:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:43:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:43:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:43:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:43:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:43:43,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:43:43,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779292156] [2022-03-19 02:43:43,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779292156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:43:43,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47827549] [2022-03-19 02:43:43,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:43:43,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:43:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:43:43,573 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) [2022-03-19 02:43:43,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-19 02:44:51,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2022-03-19 02:44:51,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:44:51,049 WARN L261 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 147 conjunts are in the unsatisfiable core [2022-03-19 02:44:51,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:44:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:44:51,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:45:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:00,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47827549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:45:00,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:45:00,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72, 75] total 147 [2022-03-19 02:45:00,463 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:45:00,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [151273509] [2022-03-19 02:45:00,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [151273509] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:45:00,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:45:00,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2022-03-19 02:45:00,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488227528] [2022-03-19 02:45:00,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:45:00,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-19 02:45:00,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:45:00,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-19 02:45:00,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=16061, Unknown=0, NotChecked=0, Total=21462 [2022-03-19 02:45:00,465 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) [2022-03-19 02:45:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:45:04,215 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-03-19 02:45:04,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-19 02:45:04,216 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 [2022-03-19 02:45:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:45:04,216 INFO L225 Difference]: With dead ends: 87 [2022-03-19 02:45:04,216 INFO L226 Difference]: Without dead ends: 82 [2022-03-19 02:45:04,218 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=10719, Invalid=36153, Unknown=0, NotChecked=0, Total=46872 [2022-03-19 02:45:04,219 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:45:04,219 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 288 Invalid, 5248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 02:45:04,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-03-19 02:45:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-03-19 02:45:04,224 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) [2022-03-19 02:45:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2022-03-19 02:45:04,225 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2022-03-19 02:45:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:45:04,225 INFO L478 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2022-03-19 02:45:04,225 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) [2022-03-19 02:45:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2022-03-19 02:45:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-19 02:45:04,226 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:45:04,226 INFO L500 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:45:04,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-03-19 02:45:04,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-03-19 02:45:04,632 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 [2022-03-19 02:45:04,632 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:45:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:45:04,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1235960420, now seen corresponding path program 139 times [2022-03-19 02:45:04,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:45:04,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [841322479] [2022-03-19 02:45:04,660 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:45:04,660 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:45:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2084006345, now seen corresponding path program 1 times [2022-03-19 02:45:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:45:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428270990] [2022-03-19 02:45:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:45:04,662 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)) [2022-03-19 02:45:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:45:04,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091787279] [2022-03-19 02:45:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:04,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:45:04,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:45:04,665 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) [2022-03-19 02:45:04,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-19 02:45:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:45:04,719 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:45:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:45:04,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:45:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1235960420, now seen corresponding path program 140 times [2022-03-19 02:45:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:45:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801596476] [2022-03-19 02:45:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:45:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:45:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:45:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:45:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:45:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801596476] [2022-03-19 02:45:06,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801596476] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:45:06,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135915667] [2022-03-19 02:45:06,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:45:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:45:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:45:06,784 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) [2022-03-19 02:45:06,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-19 02:45:06,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:45:06,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:45:06,869 WARN L261 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 143 conjunts are in the unsatisfiable core [2022-03-19 02:45:06,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:45:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:07,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:45:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:14,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135915667] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:45:14,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:45:14,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73, 73] total 146 [2022-03-19 02:45:14,211 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:45:14,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [841322479] [2022-03-19 02:45:14,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [841322479] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:45:14,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:45:14,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2022-03-19 02:45:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330833361] [2022-03-19 02:45:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:45:14,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-03-19 02:45:14,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:45:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-03-19 02:45:14,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5472, Invalid=15698, Unknown=0, NotChecked=0, Total=21170 [2022-03-19 02:45:14,213 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) [2022-03-19 02:45:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:45:17,972 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-03-19 02:45:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-19 02:45:17,973 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 [2022-03-19 02:45:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:45:17,973 INFO L225 Difference]: With dead ends: 88 [2022-03-19 02:45:17,973 INFO L226 Difference]: Without dead ends: 83 [2022-03-19 02:45:17,975 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=10937, Invalid=35935, Unknown=0, NotChecked=0, Total=46872 [2022-03-19 02:45:17,975 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5152 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:45:17,976 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 5295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 5152 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 02:45:17,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-03-19 02:45:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-03-19 02:45:17,979 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) [2022-03-19 02:45:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2022-03-19 02:45:17,979 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2022-03-19 02:45:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:45:17,979 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2022-03-19 02:45:17,979 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) [2022-03-19 02:45:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2022-03-19 02:45:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-19 02:45:17,980 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:45:17,980 INFO L500 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:45:17,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-19 02:45:18,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-03-19 02:45:18,380 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 [2022-03-19 02:45:18,381 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:45:18,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:45:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 376393910, now seen corresponding path program 141 times [2022-03-19 02:45:18,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:45:18,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1737690795] [2022-03-19 02:45:18,408 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:45:18,408 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:45:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2024901001, now seen corresponding path program 1 times [2022-03-19 02:45:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:45:18,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066403386] [2022-03-19 02:45:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:45:18,410 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)) [2022-03-19 02:45:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:45:18,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296809000] [2022-03-19 02:45:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:18,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:45:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:45:18,413 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) [2022-03-19 02:45:18,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-03-19 02:45:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:45:18,463 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:45:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:45:18,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:45:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash 376393910, now seen corresponding path program 142 times [2022-03-19 02:45:18,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:45:18,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878707349] [2022-03-19 02:45:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:18,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:45:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:45:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:45:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:45:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:45:20,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878707349] [2022-03-19 02:45:20,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878707349] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:45:20,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792163550] [2022-03-19 02:45:20,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:45:20,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:45:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:45:20,605 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) [2022-03-19 02:45:20,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-03-19 02:45:20,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:45:20,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:45:20,693 WARN L261 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 145 conjunts are in the unsatisfiable core [2022-03-19 02:45:20,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:45:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:20,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:45:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:28,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792163550] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:45:28,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:45:28,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 148 [2022-03-19 02:45:28,287 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:45:28,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1737690795] [2022-03-19 02:45:28,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1737690795] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:45:28,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:45:28,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2022-03-19 02:45:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898472080] [2022-03-19 02:45:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:45:28,287 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-03-19 02:45:28,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:45:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-03-19 02:45:28,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5621, Invalid=16135, Unknown=0, NotChecked=0, Total=21756 [2022-03-19 02:45:28,289 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) [2022-03-19 02:45:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:45:32,090 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-03-19 02:45:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-03-19 02:45:32,090 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 [2022-03-19 02:45:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:45:32,091 INFO L225 Difference]: With dead ends: 89 [2022-03-19 02:45:32,091 INFO L226 Difference]: Without dead ends: 84 [2022-03-19 02:45:32,093 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2704 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=11235, Invalid=36945, Unknown=0, NotChecked=0, Total=48180 [2022-03-19 02:45:32,093 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:45:32,093 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 143 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 02:45:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-03-19 02:45:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-03-19 02:45:32,098 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) [2022-03-19 02:45:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-03-19 02:45:32,098 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2022-03-19 02:45:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:45:32,098 INFO L478 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-03-19 02:45:32,098 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) [2022-03-19 02:45:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-03-19 02:45:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-19 02:45:32,098 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:45:32,098 INFO L500 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:45:32,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-03-19 02:45:32,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-03-19 02:45:32,499 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 [2022-03-19 02:45:32,499 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:45:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:45:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1180229412, now seen corresponding path program 143 times [2022-03-19 02:45:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:45:32,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1736567445] [2022-03-19 02:45:32,521 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:45:32,521 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:45:32,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1965795657, now seen corresponding path program 1 times [2022-03-19 02:45:32,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:45:32,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224443932] [2022-03-19 02:45:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:32,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:45:32,523 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)) [2022-03-19 02:45:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:45:32,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289358223] [2022-03-19 02:45:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:32,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:45:32,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:45:32,526 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) [2022-03-19 02:45:32,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-03-19 02:45:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:45:32,568 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:45:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:45:32,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:45:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1180229412, now seen corresponding path program 144 times [2022-03-19 02:45:32,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:45:32,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490534368] [2022-03-19 02:45:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:45:32,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:45:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:45:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:45:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:45:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:45:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:45:34,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490534368] [2022-03-19 02:45:34,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490534368] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:45:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179083813] [2022-03-19 02:45:34,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:45:34,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:45:34,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:45:34,820 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) [2022-03-19 02:45:34,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-03-19 02:46:08,056 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-03-19 02:46:08,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:46:08,077 WARN L261 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 154 conjunts are in the unsatisfiable core [2022-03-19 02:46:08,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:46:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:46:08,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:46:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:46:51,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179083813] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:46:51,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:46:51,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75, 78] total 153 [2022-03-19 02:46:51,324 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:46:51,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1736567445] [2022-03-19 02:46:51,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1736567445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:46:51,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:46:51,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2022-03-19 02:46:51,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648459049] [2022-03-19 02:46:51,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:46:51,324 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-03-19 02:46:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:46:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-03-19 02:46:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17405, Unknown=0, NotChecked=0, Total=23256 [2022-03-19 02:46:51,325 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) [2022-03-19 02:46:55,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:46:55,319 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-03-19 02:46:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-03-19 02:46:55,320 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 [2022-03-19 02:46:55,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:46:55,320 INFO L225 Difference]: With dead ends: 90 [2022-03-19 02:46:55,320 INFO L226 Difference]: Without dead ends: 85 [2022-03-19 02:46:55,323 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2784 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=11616, Invalid=39234, Unknown=0, NotChecked=0, Total=50850 [2022-03-19 02:46:55,324 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5323 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 02:46:55,324 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 5470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 5323 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 02:46:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-03-19 02:46:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-03-19 02:46:55,329 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) [2022-03-19 02:46:55,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-03-19 02:46:55,329 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2022-03-19 02:46:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:46:55,329 INFO L478 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-03-19 02:46:55,330 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) [2022-03-19 02:46:55,330 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-03-19 02:46:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-19 02:46:55,330 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:46:55,330 INFO L500 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:46:55,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-03-19 02:46:55,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-03-19 02:46:55,740 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 [2022-03-19 02:46:55,740 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:46:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:46:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2104055158, now seen corresponding path program 145 times [2022-03-19 02:46:55,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:46:55,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2137721006] [2022-03-19 02:46:55,772 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:46:55,772 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:46:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1906690313, now seen corresponding path program 1 times [2022-03-19 02:46:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:46:55,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436982472] [2022-03-19 02:46:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:46:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:46:55,775 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)) [2022-03-19 02:46:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:46:55,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767102841] [2022-03-19 02:46:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:46:55,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:46:55,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:46:55,779 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) [2022-03-19 02:46:55,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-03-19 02:46:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:46:55,829 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:46:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:46:55,837 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:46:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2104055158, now seen corresponding path program 146 times [2022-03-19 02:46:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:46:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386803709] [2022-03-19 02:46:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:46:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:46:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:46:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:46:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:46:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:46:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:46:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386803709] [2022-03-19 02:46:58,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386803709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:46:58,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345906531] [2022-03-19 02:46:58,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 02:46:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:46:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:46:58,042 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) [2022-03-19 02:46:58,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-03-19 02:46:58,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 02:46:58,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:46:58,099 WARN L261 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 149 conjunts are in the unsatisfiable core [2022-03-19 02:46:58,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:46:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:46:58,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:47:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:47:06,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345906531] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:47:06,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:47:06,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 152 [2022-03-19 02:47:06,029 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:47:06,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2137721006] [2022-03-19 02:47:06,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2137721006] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:47:06,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:47:06,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2022-03-19 02:47:06,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869221807] [2022-03-19 02:47:06,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:47:06,029 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-19 02:47:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:47:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-19 02:47:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5925, Invalid=17027, Unknown=0, NotChecked=0, Total=22952 [2022-03-19 02:47:06,031 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) [2022-03-19 02:47:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:47:10,148 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2022-03-19 02:47:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-19 02:47:10,148 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 [2022-03-19 02:47:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:47:10,149 INFO L225 Difference]: With dead ends: 91 [2022-03-19 02:47:10,149 INFO L226 Difference]: Without dead ends: 86 [2022-03-19 02:47:10,151 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2853 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=11843, Invalid=39007, Unknown=0, NotChecked=0, Total=50850 [2022-03-19 02:47:10,151 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 5714 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 02:47:10,152 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 323 Invalid, 5863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 5714 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 02:47:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-03-19 02:47:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-03-19 02:47:10,155 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) [2022-03-19 02:47:10,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-03-19 02:47:10,155 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2022-03-19 02:47:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:47:10,156 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-03-19 02:47:10,156 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) [2022-03-19 02:47:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-03-19 02:47:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-03-19 02:47:10,156 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:47:10,156 INFO L500 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:47:10,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-03-19 02:47:10,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-03-19 02:47:10,559 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 [2022-03-19 02:47:10,560 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:47:10,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:47:10,560 INFO L85 PathProgramCache]: Analyzing trace with hash 837661724, now seen corresponding path program 147 times [2022-03-19 02:47:10,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:47:10,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2035549847] [2022-03-19 02:47:10,587 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:47:10,587 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:47:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1847584969, now seen corresponding path program 1 times [2022-03-19 02:47:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:47:10,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581829510] [2022-03-19 02:47:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:47:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:47:10,589 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)) [2022-03-19 02:47:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:47:10,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127060458] [2022-03-19 02:47:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:47:10,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:47:10,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:47:10,593 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) [2022-03-19 02:47:10,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-03-19 02:47:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:47:10,632 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:47:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:47:10,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:47:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 837661724, now seen corresponding path program 148 times [2022-03-19 02:47:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:47:10,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402165709] [2022-03-19 02:47:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:47:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:47:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:47:12,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:47:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:47:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:47:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:47:12,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402165709] [2022-03-19 02:47:12,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402165709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:47:12,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908911864] [2022-03-19 02:47:12,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 02:47:12,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:47:12,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:47:12,924 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) [2022-03-19 02:47:12,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-03-19 02:47:13,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 02:47:13,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 02:47:13,024 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 151 conjunts are in the unsatisfiable core [2022-03-19 02:47:13,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 02:47:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:47:13,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 02:47:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:47:21,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908911864] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 02:47:21,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-19 02:47:21,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77, 77] total 154 [2022-03-19 02:47:21,169 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 02:47:21,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2035549847] [2022-03-19 02:47:21,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2035549847] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 02:47:21,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 02:47:21,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2022-03-19 02:47:21,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890359868] [2022-03-19 02:47:21,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 02:47:21,169 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-03-19 02:47:21,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 02:47:21,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-03-19 02:47:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6080, Invalid=17482, Unknown=0, NotChecked=0, Total=23562 [2022-03-19 02:47:21,171 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) [2022-03-19 02:47:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 02:47:25,403 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-03-19 02:47:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-19 02:47:25,403 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 [2022-03-19 02:47:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 02:47:25,404 INFO L225 Difference]: With dead ends: 92 [2022-03-19 02:47:25,404 INFO L226 Difference]: Without dead ends: 87 [2022-03-19 02:47:25,406 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2929 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=12153, Invalid=40059, Unknown=0, NotChecked=0, Total=52212 [2022-03-19 02:47:25,406 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 5922 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 02:47:25,406 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 383 Invalid, 6073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 5922 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 02:47:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-03-19 02:47:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-03-19 02:47:25,410 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) [2022-03-19 02:47:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-03-19 02:47:25,410 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2022-03-19 02:47:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 02:47:25,411 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-03-19 02:47:25,411 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) [2022-03-19 02:47:25,411 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-03-19 02:47:25,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-19 02:47:25,411 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 02:47:25,411 INFO L500 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 02:47:25,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Forceful destruction successful, exit code 0 [2022-03-19 02:47:25,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-03-19 02:47:25,812 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 [2022-03-19 02:47:25,812 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 02:47:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 02:47:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 234170934, now seen corresponding path program 149 times [2022-03-19 02:47:25,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 02:47:25,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [673437088] [2022-03-19 02:47:25,834 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-19 02:47:25,834 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 02:47:25,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1788479625, now seen corresponding path program 1 times [2022-03-19 02:47:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:47:25,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126622833] [2022-03-19 02:47:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:47:25,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:47:25,837 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)) [2022-03-19 02:47:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-19 02:47:25,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380692139] [2022-03-19 02:47:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:47:25,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:47:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:47:25,840 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) [2022-03-19 02:47:25,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-03-19 02:47:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:47:25,879 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 02:47:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 02:47:25,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 02:47:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 234170934, now seen corresponding path program 150 times [2022-03-19 02:47:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 02:47:25,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703439946] [2022-03-19 02:47:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 02:47:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 02:47:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:47:28,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 02:47:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 02:47:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 02:47:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 02:47:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703439946] [2022-03-19 02:47:28,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703439946] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 02:47:28,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217150116] [2022-03-19 02:47:28,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 02:47:28,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 02:47:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 02:47:28,222 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) [2022-03-19 02:47:28,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process