/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 23:00:56,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 23:00:56,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 23:00:56,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 23:00:56,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 23:00:56,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 23:00:56,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 23:00:56,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-06 23:00:56,486 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 23:00:56,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 23:00:56,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 23:00:56,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 23:00:56,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 23:00:56,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 23:00:56,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 23:00:56,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 23:00:56,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 23:00:56,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 23:00:56,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 23:00:56,489 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 23:00:56,489 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 23:00:56,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 23:00:56,489 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-06 23:00:56,489 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 23:00:56,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 23:00:56,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 23:00:56,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 23:00:56,663 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 23:00:56,666 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 23:00:56,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-04-06 23:00:56,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650456b3d/f49dbd2953aa423a99652033cbc26d0f/FLAGd3a6d2a56 [2022-04-06 23:00:56,994 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 23:00:56,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-04-06 23:00:56,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650456b3d/f49dbd2953aa423a99652033cbc26d0f/FLAGd3a6d2a56 [2022-04-06 23:00:57,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/650456b3d/f49dbd2953aa423a99652033cbc26d0f [2022-04-06 23:00:57,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 23:00:57,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 23:00:57,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 23:00:57,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 23:00:57,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 23:00:57,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af17c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57, skipping insertion in model container [2022-04-06 23:00:57,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 23:00:57,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 23:00:57,552 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-04-06 23:00:57,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 23:00:57,600 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 23:00:57,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-04-06 23:00:57,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 23:00:57,630 INFO L208 MainTranslator]: Completed translation [2022-04-06 23:00:57,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57 WrapperNode [2022-04-06 23:00:57,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 23:00:57,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 23:00:57,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 23:00:57,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 23:00:57,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 23:00:57,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 23:00:57,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 23:00:57,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 23:00:57,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (1/1) ... [2022-04-06 23:00:57,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 23:00:57,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:00:57,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 23:00:57,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 23:00:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 23:00:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 23:00:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 23:00:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 23:00:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 23:00:57,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 23:00:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 23:00:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 23:00:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 23:00:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 23:00:57,754 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 23:00:57,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 23:00:57,848 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 23:00:57,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 23:00:57,858 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 23:00:57,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:00:57 BoogieIcfgContainer [2022-04-06 23:00:57,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 23:00:57,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 23:00:57,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 23:00:57,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 23:00:57,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 11:00:57" (1/3) ... [2022-04-06 23:00:57,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77234e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:00:57, skipping insertion in model container [2022-04-06 23:00:57,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:00:57" (2/3) ... [2022-04-06 23:00:57,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77234e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:00:57, skipping insertion in model container [2022-04-06 23:00:57,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:00:57" (3/3) ... [2022-04-06 23:00:57,866 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2022-04-06 23:00:57,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 23:00:57,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 23:00:57,897 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 23:00:57,902 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 23:00:57,903 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 23:00:57,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 23:00:57,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 23:00:57,935 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:00:57,936 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:00:57,936 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:00:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:00:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-04-06 23:00:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:57,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [651230235] [2022-04-06 23:00:57,980 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:00:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-04-06 23:00:57,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:00:57,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246596141] [2022-04-06 23:00:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:00:57,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:00:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 23:00:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 23:00:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 23:00:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 23:00:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 23:00:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:00:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246596141] [2022-04-06 23:00:58,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246596141] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:58,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:58,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 23:00:58,212 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:00:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [651230235] [2022-04-06 23:00:58,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [651230235] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:58,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:58,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 23:00:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530966387] [2022-04-06 23:00:58,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:00:58,216 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 23:00:58,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 23:00:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 23:00:58,258 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 23:00:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:00:58,411 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-04-06 23:00:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 23:00:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-06 23:00:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:00:58,421 INFO L225 Difference]: With dead ends: 69 [2022-04-06 23:00:58,421 INFO L226 Difference]: Without dead ends: 33 [2022-04-06 23:00:58,424 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 23:00:58,426 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:00:58,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:00:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-06 23:00:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-06 23:00:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 23:00:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-04-06 23:00:58,454 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-04-06 23:00:58,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:00:58,454 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-04-06 23:00:58,454 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 23:00:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-04-06 23:00:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 23:00:58,456 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:00:58,456 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:00:58,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 23:00:58,456 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:00:58,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:00:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-04-06 23:00:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:58,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1956425569] [2022-04-06 23:00:58,458 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:00:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-04-06 23:00:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:00:58,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623669029] [2022-04-06 23:00:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:00:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:00:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 23:00:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 23:00:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 23:00:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 23:00:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 23:00:58,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:00:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623669029] [2022-04-06 23:00:58,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623669029] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:58,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:58,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 23:00:58,549 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:00:58,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1956425569] [2022-04-06 23:00:58,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1956425569] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:58,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:58,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 23:00:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252340274] [2022-04-06 23:00:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:00:58,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 23:00:58,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 23:00:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 23:00:58,553 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 23:00:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:00:58,704 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-04-06 23:00:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 23:00:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-04-06 23:00:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:00:58,707 INFO L225 Difference]: With dead ends: 46 [2022-04-06 23:00:58,707 INFO L226 Difference]: Without dead ends: 44 [2022-04-06 23:00:58,708 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 23:00:58,710 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:00:58,710 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:00:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-06 23:00:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-04-06 23:00:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 23:00:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-04-06 23:00:58,730 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-04-06 23:00:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:00:58,730 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-04-06 23:00:58,731 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 23:00:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-04-06 23:00:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 23:00:58,731 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:00:58,732 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:00:58,732 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 23:00:58,732 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:00:58,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:00:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-04-06 23:00:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:58,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1030457266] [2022-04-06 23:00:58,739 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:00:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-04-06 23:00:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:00:58,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401529690] [2022-04-06 23:00:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:00:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:00:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 23:00:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 23:00:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 23:00:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 23:00:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 23:00:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 23:00:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 23:00:58,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:00:58,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401529690] [2022-04-06 23:00:58,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401529690] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:58,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:58,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 23:00:58,873 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:00:58,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1030457266] [2022-04-06 23:00:58,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1030457266] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:58,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:58,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 23:00:58,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055698415] [2022-04-06 23:00:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:00:58,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 23:00:58,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:58,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 23:00:58,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 23:00:58,875 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 23:00:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:00:59,081 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-06 23:00:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 23:00:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-06 23:00:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:00:59,082 INFO L225 Difference]: With dead ends: 50 [2022-04-06 23:00:59,082 INFO L226 Difference]: Without dead ends: 48 [2022-04-06 23:00:59,083 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 23:00:59,083 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:00:59,084 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:00:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-04-06 23:00:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-04-06 23:00:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 23:00:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-04-06 23:00:59,091 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-04-06 23:00:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:00:59,091 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-04-06 23:00:59,091 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 23:00:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-04-06 23:00:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 23:00:59,092 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:00:59,092 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:00:59,092 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 23:00:59,092 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:00:59,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:00:59,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-04-06 23:00:59,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:59,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1401433261] [2022-04-06 23:00:59,093 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:00:59,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-04-06 23:00:59,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:00:59,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410326167] [2022-04-06 23:00:59,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:00:59,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:00:59,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:00:59,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2084640745] [2022-04-06 23:00:59,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 23:00:59,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:00:59,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:00:59,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:00:59,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 23:00:59,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 23:00:59,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:00:59,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 23:00:59,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:00:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 23:00:59,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 23:00:59,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:00:59,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410326167] [2022-04-06 23:00:59,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:00:59,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084640745] [2022-04-06 23:00:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084640745] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:59,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:59,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 23:00:59,462 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:00:59,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1401433261] [2022-04-06 23:00:59,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1401433261] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:00:59,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:00:59,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 23:00:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612066661] [2022-04-06 23:00:59,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:00:59,463 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 23:00:59,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:59,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 23:00:59,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-06 23:00:59,464 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 23:00:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:00:59,560 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-04-06 23:00:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 23:00:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-04-06 23:00:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:00:59,562 INFO L225 Difference]: With dead ends: 69 [2022-04-06 23:00:59,562 INFO L226 Difference]: Without dead ends: 55 [2022-04-06 23:00:59,562 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 23:00:59,563 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:00:59,563 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 194 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:00:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-06 23:00:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-06 23:00:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 23:00:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-04-06 23:00:59,573 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-04-06 23:00:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:00:59,573 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-04-06 23:00:59,573 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 23:00:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-04-06 23:00:59,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 23:00:59,574 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:00:59,574 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:00:59,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 23:00:59,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:00:59,788 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:00:59,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:00:59,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-04-06 23:00:59,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:00:59,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [145955997] [2022-04-06 23:00:59,790 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:00:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-04-06 23:00:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:00:59,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151413666] [2022-04-06 23:00:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:00:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:00:59,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:00:59,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124386547] [2022-04-06 23:00:59,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 23:00:59,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:00:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:00:59,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:00:59,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 23:00:59,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 23:00:59,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:00:59,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 23:00:59,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-06 23:01:00,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-06 23:01:00,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:00,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151413666] [2022-04-06 23:01:00,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:00,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124386547] [2022-04-06 23:01:00,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124386547] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 23:01:00,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 23:01:00,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-04-06 23:01:00,437 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:00,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [145955997] [2022-04-06 23:01:00,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [145955997] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:00,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:00,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 23:01:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45327612] [2022-04-06 23:01:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:00,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 23:01:00,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:00,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 23:01:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-04-06 23:01:00,439 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 23:01:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:00,568 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-04-06 23:01:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 23:01:00,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2022-04-06 23:01:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:00,570 INFO L225 Difference]: With dead ends: 65 [2022-04-06 23:01:00,570 INFO L226 Difference]: Without dead ends: 54 [2022-04-06 23:01:00,570 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-04-06 23:01:00,571 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:00,571 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 163 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:01:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-04-06 23:01:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-04-06 23:01:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-04-06 23:01:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-06 23:01:00,579 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 45 [2022-04-06 23:01:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:00,579 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-06 23:01:00,579 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-04-06 23:01:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-06 23:01:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 23:01:00,580 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:01:00,580 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:01:00,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:00,797 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:00,797 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:01:00,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:01:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-04-06 23:01:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1013005948] [2022-04-06 23:01:00,798 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:01:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-04-06 23:01:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:01:00,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479483924] [2022-04-06 23:01:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:01:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:01:00,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:01:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063002804] [2022-04-06 23:01:00,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 23:01:00,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:00,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:01:00,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:01:00,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 23:01:00,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 23:01:00,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:01:00,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 23:01:00,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-04-06 23:01:01,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-04-06 23:01:01,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:01,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479483924] [2022-04-06 23:01:01,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:01,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063002804] [2022-04-06 23:01:01,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063002804] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 23:01:01,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 23:01:01,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-04-06 23:01:01,272 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:01,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1013005948] [2022-04-06 23:01:01,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1013005948] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:01,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:01,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 23:01:01,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123512023] [2022-04-06 23:01:01,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:01,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 23:01:01,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 23:01:01,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 23:01:01,279 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 23:01:01,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:01,328 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-04-06 23:01:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 23:01:01,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-04-06 23:01:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:01,330 INFO L225 Difference]: With dead ends: 66 [2022-04-06 23:01:01,330 INFO L226 Difference]: Without dead ends: 64 [2022-04-06 23:01:01,331 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 23:01:01,332 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:01,332 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 23:01:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-04-06 23:01:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-04-06 23:01:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 23:01:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-04-06 23:01:01,340 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2022-04-06 23:01:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:01,340 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-04-06 23:01:01,341 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 23:01:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-04-06 23:01:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 23:01:01,341 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:01:01,341 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:01:01,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:01,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:01,558 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:01:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:01:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 1 times [2022-04-06 23:01:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:01,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1502933223] [2022-04-06 23:01:01,559 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:01:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 2 times [2022-04-06 23:01:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:01:01,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563347558] [2022-04-06 23:01:01,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:01:01,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:01:01,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:01:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565392939] [2022-04-06 23:01:01,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 23:01:01,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:01,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:01:01,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:01:01,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 23:01:01,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 23:01:01,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:01:01,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 23:01:01,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-04-06 23:01:01,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-04-06 23:01:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:02,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563347558] [2022-04-06 23:01:02,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565392939] [2022-04-06 23:01:02,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565392939] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 23:01:02,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 23:01:02,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-04-06 23:01:02,197 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:02,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1502933223] [2022-04-06 23:01:02,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1502933223] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:02,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:02,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 23:01:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465818752] [2022-04-06 23:01:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:02,198 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 23:01:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:02,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 23:01:02,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 23:01:02,198 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-04-06 23:01:02,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:02,384 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2022-04-06 23:01:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 23:01:02,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 62 [2022-04-06 23:01:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:02,386 INFO L225 Difference]: With dead ends: 90 [2022-04-06 23:01:02,386 INFO L226 Difference]: Without dead ends: 88 [2022-04-06 23:01:02,387 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-04-06 23:01:02,387 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:02,387 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 160 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:01:02,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-04-06 23:01:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-04-06 23:01:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-04-06 23:01:02,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-04-06 23:01:02,398 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 62 [2022-04-06 23:01:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:02,398 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-04-06 23:01:02,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-04-06 23:01:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-04-06 23:01:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 23:01:02,399 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:01:02,399 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:01:02,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:02,616 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:02,617 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:01:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:01:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-04-06 23:01:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:02,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [174383396] [2022-04-06 23:01:02,617 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:01:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-04-06 23:01:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:01:02,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428396734] [2022-04-06 23:01:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:01:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:01:02,624 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:01:02,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874151550] [2022-04-06 23:01:02,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 23:01:02,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:01:02,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:01:02,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 23:01:02,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 23:01:02,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:01:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 23:01:02,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-04-06 23:01:03,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-04-06 23:01:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428396734] [2022-04-06 23:01:04,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874151550] [2022-04-06 23:01:04,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874151550] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 23:01:04,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 23:01:04,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-04-06 23:01:04,276 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:04,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [174383396] [2022-04-06 23:01:04,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [174383396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:04,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:04,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 23:01:04,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298193790] [2022-04-06 23:01:04,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:04,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 23:01:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 23:01:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-04-06 23:01:04,277 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-06 23:01:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:04,540 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2022-04-06 23:01:04,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 23:01:04,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-04-06 23:01:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:04,541 INFO L225 Difference]: With dead ends: 121 [2022-04-06 23:01:04,541 INFO L226 Difference]: Without dead ends: 98 [2022-04-06 23:01:04,542 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-04-06 23:01:04,542 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:04,542 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 227 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 23:01:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-04-06 23:01:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-04-06 23:01:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 60 states have internal predecessors, (65), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 23:01:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-04-06 23:01:04,553 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 75 [2022-04-06 23:01:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:04,553 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-04-06 23:01:04,553 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-06 23:01:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-04-06 23:01:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 23:01:04,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:01:04,554 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:01:04,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:04,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:04,768 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:01:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:01:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 3 times [2022-04-06 23:01:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:04,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1393482247] [2022-04-06 23:01:04,769 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:01:04,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 4 times [2022-04-06 23:01:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:01:04,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361961708] [2022-04-06 23:01:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:01:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:01:04,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:01:04,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487377400] [2022-04-06 23:01:04,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 23:01:04,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:04,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:01:04,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:01:04,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 23:01:04,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 23:01:04,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:01:04,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 23:01:04,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 23:01:05,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 23:01:05,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361961708] [2022-04-06 23:01:05,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487377400] [2022-04-06 23:01:05,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487377400] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 23:01:05,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 23:01:05,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-04-06 23:01:05,363 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:05,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1393482247] [2022-04-06 23:01:05,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1393482247] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:05,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:05,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 23:01:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402634596] [2022-04-06 23:01:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:05,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 23:01:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 23:01:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 23:01:05,364 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 23:01:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:05,530 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2022-04-06 23:01:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 23:01:05,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2022-04-06 23:01:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:05,531 INFO L225 Difference]: With dead ends: 113 [2022-04-06 23:01:05,531 INFO L226 Difference]: Without dead ends: 76 [2022-04-06 23:01:05,532 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-06 23:01:05,532 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 16 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:05,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 179 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:01:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-04-06 23:01:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-04-06 23:01:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 23:01:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-04-06 23:01:05,541 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 79 [2022-04-06 23:01:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:05,542 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-04-06 23:01:05,542 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-04-06 23:01:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-04-06 23:01:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-06 23:01:05,542 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:01:05,543 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:01:05,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:05,760 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:05,760 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:01:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:01:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-04-06 23:01:05,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:05,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1598640311] [2022-04-06 23:01:05,761 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:01:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-04-06 23:01:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:01:05,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459082304] [2022-04-06 23:01:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:01:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:01:05,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:01:05,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093876682] [2022-04-06 23:01:05,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 23:01:05,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:05,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:01:05,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:01:05,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 23:01:05,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 23:01:05,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:01:05,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-06 23:01:05,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 23:01:06,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-04-06 23:01:08,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:08,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459082304] [2022-04-06 23:01:08,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:08,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093876682] [2022-04-06 23:01:08,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093876682] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 23:01:08,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 23:01:08,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-04-06 23:01:08,094 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:08,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1598640311] [2022-04-06 23:01:08,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1598640311] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:08,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:08,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 23:01:08,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592100065] [2022-04-06 23:01:08,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:08,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 23:01:08,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:08,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 23:01:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-04-06 23:01:08,095 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 23:01:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:08,283 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-04-06 23:01:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 23:01:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-04-06 23:01:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:08,284 INFO L225 Difference]: With dead ends: 96 [2022-04-06 23:01:08,284 INFO L226 Difference]: Without dead ends: 71 [2022-04-06 23:01:08,284 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-04-06 23:01:08,285 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:08,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 223 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 23:01:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-04-06 23:01:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-04-06 23:01:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.0) internal successors, (44), 44 states have internal predecessors, (44), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-06 23:01:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-04-06 23:01:08,292 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 80 [2022-04-06 23:01:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:08,293 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-04-06 23:01:08,293 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 23:01:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-04-06 23:01:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 23:01:08,294 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 23:01:08,294 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 23:01:08,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:08,513 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:08,514 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 23:01:08,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 23:01:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-04-06 23:01:08,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:08,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1757286301] [2022-04-06 23:01:08,514 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 23:01:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-04-06 23:01:08,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 23:01:08,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142064667] [2022-04-06 23:01:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 23:01:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 23:01:08,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 23:01:08,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358569960] [2022-04-06 23:01:08,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 23:01:08,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 23:01:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 23:01:08,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 23:01:08,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 23:01:08,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 23:01:08,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 23:01:08,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-06 23:01:08,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 23:01:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-04-06 23:01:11,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 23:01:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-04-06 23:01:14,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 23:01:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142064667] [2022-04-06 23:01:14,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 23:01:14,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358569960] [2022-04-06 23:01:14,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358569960] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 23:01:14,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 23:01:14,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-04-06 23:01:14,365 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 23:01:14,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1757286301] [2022-04-06 23:01:14,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1757286301] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 23:01:14,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 23:01:14,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 23:01:14,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991775779] [2022-04-06 23:01:14,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 23:01:14,366 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 23:01:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 23:01:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 23:01:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-04-06 23:01:14,367 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-04-06 23:01:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 23:01:14,867 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-04-06 23:01:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 23:01:14,867 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 86 [2022-04-06 23:01:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 23:01:14,867 INFO L225 Difference]: With dead ends: 71 [2022-04-06 23:01:14,867 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 23:01:14,868 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-04-06 23:01:14,868 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 23:01:14,868 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 175 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 174 Invalid, 0 Unknown, 93 Unchecked, 0.3s Time] [2022-04-06 23:01:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 23:01:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 23:01:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 23:01:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 23:01:14,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2022-04-06 23:01:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 23:01:14,869 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 23:01:14,869 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-04-06 23:01:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 23:01:14,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 23:01:14,871 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 23:01:14,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 23:01:15,072 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,SelfDestructingSolverStorable10 [2022-04-06 23:01:15,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 23:01:18,280 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-06 23:01:18,280 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-06 23:01:18,280 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-06 23:01:18,280 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-06 23:01:18,280 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-06 23:01:18,280 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 23:01:18,280 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 23:01:18,280 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (<= (mod main_~A~0 4294967296) 1) (<= .cse0 1) (<= 1 .cse0))) [2022-04-06 23:01:18,280 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 1) (<= 1 .cse0) (= main_~p~0 1))) [2022-04-06 23:01:18,280 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse6 (mod main_~B~0 4294967296))) (and (= (mod main_~A~0 4294967296) main_~r~0) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse5 (div (+ (- 1) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse0 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse1 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse2 (* (- 2) .cse5)) (.cse4 (+ .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296))) (and (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse0 .cse1 2 (* main_~d~0 2) .cse2) 8589934592) 1)) (<= aux_div_v_main_~d~0_41_36 main_~r~0) (<= .cse3 .cse4) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse0 .cse1 (* aux_div_v_main_~d~0_41_36 2) 1 .cse2) 8589934592) 1)) (<= (+ .cse3 main_~d~0) (+ (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247) (<= .cse4 (+ .cse3 1)))))) (< main_~r~0 (+ (* main_~d~0 2) 1)) (<= 1 .cse6) (= main_~q~0 0) (<= .cse6 main_~r~0) (= main_~p~0 1))) [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~B~0 4294967296))) (let ((.cse9 (<= .cse1 1)) (.cse2 (= main_~q~0 0)) (.cse0 (mod main_~A~0 4294967296)) (.cse10 (= main_~p~0 1))) (or (and (= .cse0 main_~r~0) (< main_~r~0 (* 2 .cse1)) (= main_~p~0 2) .cse2 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse1 main_~d~0)) (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (< 0 .cse1) (= (+ main_~d~0 main_~r~0) .cse0) .cse9 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse10) (and (= main_~d~0 .cse1) (< main_~r~0 .cse1) .cse9 .cse2 (<= .cse0 main_~r~0) .cse10)))) [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296)) (.cse1 (mod main_~A~0 4294967296)) (.cse2 (= main_~p~0 1))) (or (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) (<= .cse0 1) (= main_~q~0 0) (<= .cse1 main_~r~0) .cse2) (and (= .cse1 (+ main_~r~0 .cse0)) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse1) (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse2))) [2022-04-06 23:01:18,281 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 23:01:18,281 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-04-06 23:01:18,281 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-04-06 23:01:18,281 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~A~0 4294967296) 1) (<= (mod main_~B~0 4294967296) 1)) [2022-04-06 23:01:18,281 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 23:01:18,282 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-06 23:01:18,282 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-06 23:01:18,283 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-06 23:01:18,283 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-04-06 23:01:18,283 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-06 23:01:18,285 INFO L719 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 2, 2, 2, 2, 2] [2022-04-06 23:01:18,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 23:01:18,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:01:18 BoogieIcfgContainer [2022-04-06 23:01:18,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 23:01:18,296 INFO L158 Benchmark]: Toolchain (without parser) took 20867.69ms. Allocated memory was 173.0MB in the beginning and 357.6MB in the end (delta: 184.5MB). Free memory was 118.2MB in the beginning and 198.7MB in the end (delta: -80.5MB). Peak memory consumption was 184.6MB. Max. memory is 8.0GB. [2022-04-06 23:01:18,297 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 23:01:18,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.62ms. Allocated memory was 173.0MB in the beginning and 247.5MB in the end (delta: 74.4MB). Free memory was 118.0MB in the beginning and 219.7MB in the end (delta: -101.7MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-04-06 23:01:18,297 INFO L158 Benchmark]: Boogie Preprocessor took 19.60ms. Allocated memory is still 247.5MB. Free memory was 219.7MB in the beginning and 218.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 23:01:18,297 INFO L158 Benchmark]: RCFGBuilder took 207.67ms. Allocated memory is still 247.5MB. Free memory was 218.2MB in the beginning and 207.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 23:01:18,297 INFO L158 Benchmark]: TraceAbstraction took 20435.41ms. Allocated memory was 247.5MB in the beginning and 357.6MB in the end (delta: 110.1MB). Free memory was 206.7MB in the beginning and 198.7MB in the end (delta: 8.0MB). Peak memory consumption was 198.8MB. Max. memory is 8.0GB. [2022-04-06 23:01:18,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 134.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.62ms. Allocated memory was 173.0MB in the beginning and 247.5MB in the end (delta: 74.4MB). Free memory was 118.0MB in the beginning and 219.7MB in the end (delta: -101.7MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.60ms. Allocated memory is still 247.5MB. Free memory was 219.7MB in the beginning and 218.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.67ms. Allocated memory is still 247.5MB. Free memory was 218.2MB in the beginning and 207.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 20435.41ms. Allocated memory was 247.5MB in the beginning and 357.6MB in the end (delta: 110.1MB). Free memory was 206.7MB in the beginning and 198.7MB in the end (delta: 8.0MB). Peak memory consumption was 198.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.4s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 1587 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 93 IncrementalHoareTripleChecker+Unchecked, 1163 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1727 IncrementalHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 424 mSDtfsCounter, 1727 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 926 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=8, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 342 PreInvPairs, 453 NumberOfFragments, 2155 HoareAnnotationTreeSize, 342 FomulaSimplifications, 447 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 1494 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((A % 4294967296 == r && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && -1 * d / -2 <= r) && B % 4294967296 <= r) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((A % 4294967296 == r && d == p * (B % 4294967296)) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) && p == 1)) || ((((((((A == r + A / 4294967296 * 4294967296 && r / -2 <= -1 * d / 4) && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= \old(cond)) || 1 <= cond) && (\old(cond) == 0 || !(cond == 0)) RESULT: Ultimate proved your program to be correct! [2022-04-06 23:01:18,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...