/usr/bin/java -ea -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/ps6-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 14:35:06,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 14:35:06,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 14:35:06,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 14:35:06,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 14:35:06,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 14:35:06,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 14:35:06,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 14:35:06,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 14:35:06,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 14:35:06,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 14:35:06,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 14:35:06,773 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 14:35:06,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 14:35:06,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 14:35:06,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 14:35:06,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 14:35:06,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 14:35:06,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 14:35:06,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 14:35:06,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 14:35:06,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 14:35:06,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 14:35:06,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 14:35:06,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 14:35:06,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 14:35:06,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 14:35:06,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 14:35:06,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 14:35:06,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 14:35:06,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 14:35:06,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 14:35:06,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 14:35:06,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 14:35:06,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 14:35:06,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 14:35:06,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 14:35:06,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 14:35:06,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 14:35:06,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 14:35:06,808 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 14:35:06,808 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 14:35:06,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 14:35:06,808 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 14:35:06,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 14:35:07,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 14:35:07,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 14:35:07,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 14:35:07,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 14:35:07,048 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 14:35:07,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound2.c [2022-04-28 14:35:07,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c08f550b4/6abb665c4b0a448682ce0d324c03b83f/FLAGbc1e2849e [2022-04-28 14:35:07,509 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 14:35:07,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps6-ll_unwindbound2.c [2022-04-28 14:35:07,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c08f550b4/6abb665c4b0a448682ce0d324c03b83f/FLAGbc1e2849e [2022-04-28 14:35:07,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c08f550b4/6abb665c4b0a448682ce0d324c03b83f [2022-04-28 14:35:07,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 14:35:07,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 14:35:07,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 14:35:07,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 14:35:07,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 14:35:07,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dee01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07, skipping insertion in model container [2022-04-28 14:35:07,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 14:35:07,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 14:35:07,706 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/ps6-ll_unwindbound2.c[458,471] [2022-04-28 14:35:07,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 14:35:07,730 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 14:35:07,741 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/ps6-ll_unwindbound2.c[458,471] [2022-04-28 14:35:07,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 14:35:07,761 INFO L208 MainTranslator]: Completed translation [2022-04-28 14:35:07,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07 WrapperNode [2022-04-28 14:35:07,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 14:35:07,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 14:35:07,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 14:35:07,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 14:35:07,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 14:35:07,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 14:35:07,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 14:35:07,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 14:35:07,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (1/1) ... [2022-04-28 14:35:07,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 14:35:07,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:07,815 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) [2022-04-28 14:35:07,843 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 [2022-04-28 14:35:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 14:35:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 14:35:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 14:35:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 14:35:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 14:35:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 14:35:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 14:35:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 14:35:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 14:35:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 14:35:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 14:35:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 14:35:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 14:35:07,910 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 14:35:07,912 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 14:35:08,085 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 14:35:08,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 14:35:08,091 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 14:35:08,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:35:08 BoogieIcfgContainer [2022-04-28 14:35:08,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 14:35:08,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 14:35:08,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 14:35:08,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 14:35:08,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 02:35:07" (1/3) ... [2022-04-28 14:35:08,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1554a163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:35:08, skipping insertion in model container [2022-04-28 14:35:08,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 02:35:07" (2/3) ... [2022-04-28 14:35:08,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1554a163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 02:35:08, skipping insertion in model container [2022-04-28 14:35:08,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 02:35:08" (3/3) ... [2022-04-28 14:35:08,120 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound2.c [2022-04-28 14:35:08,146 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 14:35:08,147 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 14:35:08,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 14:35:08,223 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28b1740f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c847d7f [2022-04-28 14:35:08,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 14:35:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 14:35:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 14:35:08,258 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:08,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:08,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 1 times [2022-04-28 14:35:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:08,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1782445640] [2022-04-28 14:35:08,290 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:35:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash 21872251, now seen corresponding path program 2 times [2022-04-28 14:35:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:08,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921331954] [2022-04-28 14:35:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:08,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 14:35:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:08,531 INFO L290 TraceCheckUtils]: 0: Hoare triple {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {32#true} is VALID [2022-04-28 14:35:08,532 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-28 14:35:08,532 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-28 14:35:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 14:35:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:08,546 INFO L290 TraceCheckUtils]: 0: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-28 14:35:08,547 INFO L290 TraceCheckUtils]: 1: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-28 14:35:08,548 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-28 14:35:08,548 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-28 14:35:08,549 INFO L272 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 14:35:08,550 INFO L290 TraceCheckUtils]: 1: Hoare triple {41#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {32#true} is VALID [2022-04-28 14:35:08,550 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2022-04-28 14:35:08,550 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #61#return; {32#true} is VALID [2022-04-28 14:35:08,551 INFO L272 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret6 := main(); {32#true} is VALID [2022-04-28 14:35:08,551 INFO L290 TraceCheckUtils]: 5: Hoare triple {32#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {32#true} is VALID [2022-04-28 14:35:08,552 INFO L272 TraceCheckUtils]: 6: Hoare triple {32#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {32#true} is VALID [2022-04-28 14:35:08,552 INFO L290 TraceCheckUtils]: 7: Hoare triple {32#true} ~cond := #in~cond; {32#true} is VALID [2022-04-28 14:35:08,552 INFO L290 TraceCheckUtils]: 8: Hoare triple {32#true} assume 0 == ~cond;assume false; {33#false} is VALID [2022-04-28 14:35:08,553 INFO L290 TraceCheckUtils]: 9: Hoare triple {33#false} assume true; {33#false} is VALID [2022-04-28 14:35:08,553 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {33#false} {32#true} #53#return; {33#false} is VALID [2022-04-28 14:35:08,555 INFO L290 TraceCheckUtils]: 11: Hoare triple {33#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {33#false} is VALID [2022-04-28 14:35:08,555 INFO L290 TraceCheckUtils]: 12: Hoare triple {33#false} assume !true; {33#false} is VALID [2022-04-28 14:35:08,555 INFO L272 TraceCheckUtils]: 13: Hoare triple {33#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {33#false} is VALID [2022-04-28 14:35:08,556 INFO L290 TraceCheckUtils]: 14: Hoare triple {33#false} ~cond := #in~cond; {33#false} is VALID [2022-04-28 14:35:08,556 INFO L290 TraceCheckUtils]: 15: Hoare triple {33#false} assume 0 == ~cond; {33#false} is VALID [2022-04-28 14:35:08,556 INFO L290 TraceCheckUtils]: 16: Hoare triple {33#false} assume !false; {33#false} is VALID [2022-04-28 14:35:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 14:35:08,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:35:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921331954] [2022-04-28 14:35:08,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921331954] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:08,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:08,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 14:35:08,562 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:35:08,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1782445640] [2022-04-28 14:35:08,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1782445640] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:08,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:08,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 14:35:08,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707348386] [2022-04-28 14:35:08,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:35:08,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-28 14:35:08,574 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:35:08,576 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:08,610 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:08,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 14:35:08,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 14:35:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 14:35:08,635 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:08,915 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-04-28 14:35:08,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 14:35:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-28 14:35:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:35:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-04-28 14:35:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-04-28 14:35:08,931 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 65 transitions. [2022-04-28 14:35:08,997 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:09,005 INFO L225 Difference]: With dead ends: 50 [2022-04-28 14:35:09,005 INFO L226 Difference]: Without dead ends: 25 [2022-04-28 14:35:09,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 14:35:09,011 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 14:35:09,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 14:35:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-28 14:35:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-04-28 14:35:09,038 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:35:09,039 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,039 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,040 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:09,044 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-28 14:35:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-28 14:35:09,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:09,045 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:09,046 INFO L74 IsIncluded]: Start isIncluded. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 25 states. [2022-04-28 14:35:09,046 INFO L87 Difference]: Start difference. First operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 25 states. [2022-04-28 14:35:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:09,049 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-04-28 14:35:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-28 14:35:09,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:09,050 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:09,050 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:35:09,050 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:35:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-04-28 14:35:09,054 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2022-04-28 14:35:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:35:09,054 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-04-28 14:35:09,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:09,055 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 24 states and 27 transitions. [2022-04-28 14:35:09,083 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-04-28 14:35:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-28 14:35:09,084 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:09,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:09,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 14:35:09,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:09,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 1 times [2022-04-28 14:35:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:09,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [493788076] [2022-04-28 14:35:09,086 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:35:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash -119968982, now seen corresponding path program 2 times [2022-04-28 14:35:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:09,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610349667] [2022-04-28 14:35:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:09,104 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:35:09,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931158153] [2022-04-28 14:35:09,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:35:09,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:09,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:09,112 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) [2022-04-28 14:35:09,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 14:35:09,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 14:35:09,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:35:09,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 14:35:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:09,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:35:09,327 INFO L272 TraceCheckUtils]: 0: Hoare triple {242#true} call ULTIMATE.init(); {242#true} is VALID [2022-04-28 14:35:09,328 INFO L290 TraceCheckUtils]: 1: Hoare triple {242#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,328 INFO L290 TraceCheckUtils]: 2: Hoare triple {250#(<= ~counter~0 0)} assume true; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,329 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {250#(<= ~counter~0 0)} {242#true} #61#return; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,329 INFO L272 TraceCheckUtils]: 4: Hoare triple {250#(<= ~counter~0 0)} call #t~ret6 := main(); {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,330 INFO L290 TraceCheckUtils]: 5: Hoare triple {250#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,331 INFO L272 TraceCheckUtils]: 6: Hoare triple {250#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,331 INFO L290 TraceCheckUtils]: 7: Hoare triple {250#(<= ~counter~0 0)} ~cond := #in~cond; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,331 INFO L290 TraceCheckUtils]: 8: Hoare triple {250#(<= ~counter~0 0)} assume !(0 == ~cond); {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,332 INFO L290 TraceCheckUtils]: 9: Hoare triple {250#(<= ~counter~0 0)} assume true; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,333 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {250#(<= ~counter~0 0)} {250#(<= ~counter~0 0)} #53#return; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,333 INFO L290 TraceCheckUtils]: 11: Hoare triple {250#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {250#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:09,334 INFO L290 TraceCheckUtils]: 12: Hoare triple {250#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {284#(<= |main_#t~post5| 0)} is VALID [2022-04-28 14:35:09,334 INFO L290 TraceCheckUtils]: 13: Hoare triple {284#(<= |main_#t~post5| 0)} assume !(#t~post5 < 2);havoc #t~post5; {243#false} is VALID [2022-04-28 14:35:09,334 INFO L272 TraceCheckUtils]: 14: Hoare triple {243#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {243#false} is VALID [2022-04-28 14:35:09,335 INFO L290 TraceCheckUtils]: 15: Hoare triple {243#false} ~cond := #in~cond; {243#false} is VALID [2022-04-28 14:35:09,335 INFO L290 TraceCheckUtils]: 16: Hoare triple {243#false} assume 0 == ~cond; {243#false} is VALID [2022-04-28 14:35:09,335 INFO L290 TraceCheckUtils]: 17: Hoare triple {243#false} assume !false; {243#false} is VALID [2022-04-28 14:35:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 14:35:09,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 14:35:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:35:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610349667] [2022-04-28 14:35:09,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:35:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931158153] [2022-04-28 14:35:09,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931158153] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:09,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:09,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 14:35:09,338 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:35:09,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [493788076] [2022-04-28 14:35:09,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [493788076] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:09,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:09,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 14:35:09,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844440934] [2022-04-28 14:35:09,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:35:09,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-28 14:35:09,341 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:35:09,341 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 14:35:09,366 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 14:35:09,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:09,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 14:35:09,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 14:35:09,369 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 14:35:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:09,482 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-28 14:35:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 14:35:09,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-28 14:35:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:35:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 14:35:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 14:35:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 14:35:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2022-04-28 14:35:09,488 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 38 transitions. [2022-04-28 14:35:09,529 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:09,531 INFO L225 Difference]: With dead ends: 34 [2022-04-28 14:35:09,531 INFO L226 Difference]: Without dead ends: 26 [2022-04-28 14:35:09,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 14:35:09,532 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 14:35:09,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 14:35:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-04-28 14:35:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-04-28 14:35:09,546 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:35:09,546 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,547 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,547 INFO L87 Difference]: Start difference. First operand 26 states. Second operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:09,558 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-28 14:35:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-28 14:35:09,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:09,558 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:09,559 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-28 14:35:09,560 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 26 states. [2022-04-28 14:35:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:09,564 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-04-28 14:35:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-28 14:35:09,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:09,565 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:09,565 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:35:09,565 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:35:09,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 14:35:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-04-28 14:35:09,572 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2022-04-28 14:35:09,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:35:09,572 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-04-28 14:35:09,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 14:35:09,573 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 26 states and 29 transitions. [2022-04-28 14:35:09,600 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-04-28 14:35:09,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-28 14:35:09,604 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:09,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:09,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 14:35:09,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:09,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash -118181522, now seen corresponding path program 1 times [2022-04-28 14:35:09,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:09,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [416960120] [2022-04-28 14:35:09,823 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 14:35:09,823 INFO L85 PathProgramCache]: Analyzing trace with hash -118181522, now seen corresponding path program 2 times [2022-04-28 14:35:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:09,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229382024] [2022-04-28 14:35:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:09,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:35:09,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080693414] [2022-04-28 14:35:09,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:35:09,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:09,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:09,839 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) [2022-04-28 14:35:09,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 14:35:09,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 14:35:09,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:35:09,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 14:35:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:09,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:35:10,039 INFO L272 TraceCheckUtils]: 0: Hoare triple {471#true} call ULTIMATE.init(); {471#true} is VALID [2022-04-28 14:35:10,040 INFO L290 TraceCheckUtils]: 1: Hoare triple {471#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {471#true} is VALID [2022-04-28 14:35:10,041 INFO L290 TraceCheckUtils]: 2: Hoare triple {471#true} assume true; {471#true} is VALID [2022-04-28 14:35:10,041 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {471#true} {471#true} #61#return; {471#true} is VALID [2022-04-28 14:35:10,041 INFO L272 TraceCheckUtils]: 4: Hoare triple {471#true} call #t~ret6 := main(); {471#true} is VALID [2022-04-28 14:35:10,041 INFO L290 TraceCheckUtils]: 5: Hoare triple {471#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {471#true} is VALID [2022-04-28 14:35:10,041 INFO L272 TraceCheckUtils]: 6: Hoare triple {471#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {471#true} is VALID [2022-04-28 14:35:10,044 INFO L290 TraceCheckUtils]: 7: Hoare triple {471#true} ~cond := #in~cond; {471#true} is VALID [2022-04-28 14:35:10,044 INFO L290 TraceCheckUtils]: 8: Hoare triple {471#true} assume !(0 == ~cond); {471#true} is VALID [2022-04-28 14:35:10,045 INFO L290 TraceCheckUtils]: 9: Hoare triple {471#true} assume true; {471#true} is VALID [2022-04-28 14:35:10,045 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {471#true} {471#true} #53#return; {471#true} is VALID [2022-04-28 14:35:10,046 INFO L290 TraceCheckUtils]: 11: Hoare triple {471#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {509#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:10,047 INFO L290 TraceCheckUtils]: 12: Hoare triple {509#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {509#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:10,049 INFO L290 TraceCheckUtils]: 13: Hoare triple {509#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 2);havoc #t~post5; {509#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:10,050 INFO L272 TraceCheckUtils]: 14: Hoare triple {509#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {519#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:35:10,050 INFO L290 TraceCheckUtils]: 15: Hoare triple {519#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {523#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:35:10,051 INFO L290 TraceCheckUtils]: 16: Hoare triple {523#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {472#false} is VALID [2022-04-28 14:35:10,051 INFO L290 TraceCheckUtils]: 17: Hoare triple {472#false} assume !false; {472#false} is VALID [2022-04-28 14:35:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 14:35:10,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 14:35:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:35:10,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229382024] [2022-04-28 14:35:10,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:35:10,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080693414] [2022-04-28 14:35:10,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080693414] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:10,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:10,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:35:10,053 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:35:10,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [416960120] [2022-04-28 14:35:10,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [416960120] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:10,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:10,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:35:10,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43457273] [2022-04-28 14:35:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:35:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-28 14:35:10,054 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:35:10,054 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:10,069 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:10,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 14:35:10,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 14:35:10,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 14:35:10,070 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:10,302 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-04-28 14:35:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 14:35:10,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-04-28 14:35:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:35:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 14:35:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 14:35:10,309 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-28 14:35:10,351 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:10,352 INFO L225 Difference]: With dead ends: 36 [2022-04-28 14:35:10,352 INFO L226 Difference]: Without dead ends: 32 [2022-04-28 14:35:10,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 14:35:10,354 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 14:35:10,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 87 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 14:35:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-28 14:35:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-28 14:35:10,373 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:35:10,374 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:10,374 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:10,374 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:10,380 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-28 14:35:10,380 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-28 14:35:10,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:10,380 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:10,380 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 32 states. [2022-04-28 14:35:10,380 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 32 states. [2022-04-28 14:35:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:10,382 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-04-28 14:35:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-28 14:35:10,382 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:10,382 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:10,382 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:35:10,382 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:35:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-04-28 14:35:10,384 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 18 [2022-04-28 14:35:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:35:10,384 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-04-28 14:35:10,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-28 14:35:10,384 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 35 transitions. [2022-04-28 14:35:10,423 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-04-28 14:35:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 14:35:10,424 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:10,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:10,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 14:35:10,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 14:35:10,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:10,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:10,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1364840471, now seen corresponding path program 1 times [2022-04-28 14:35:10,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:10,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1977456005] [2022-04-28 14:35:10,832 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 14:35:10,832 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 14:35:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1364840471, now seen corresponding path program 2 times [2022-04-28 14:35:10,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:10,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654097803] [2022-04-28 14:35:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:10,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:10,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:35:10,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398264173] [2022-04-28 14:35:10,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:35:10,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:10,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:10,848 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) [2022-04-28 14:35:10,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 14:35:11,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 14:35:11,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:35:11,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 14:35:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:11,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:35:11,234 INFO L272 TraceCheckUtils]: 0: Hoare triple {731#true} call ULTIMATE.init(); {731#true} is VALID [2022-04-28 14:35:11,235 INFO L290 TraceCheckUtils]: 1: Hoare triple {731#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,236 INFO L290 TraceCheckUtils]: 2: Hoare triple {739#(<= ~counter~0 0)} assume true; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,236 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {739#(<= ~counter~0 0)} {731#true} #61#return; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,237 INFO L272 TraceCheckUtils]: 4: Hoare triple {739#(<= ~counter~0 0)} call #t~ret6 := main(); {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,237 INFO L290 TraceCheckUtils]: 5: Hoare triple {739#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,237 INFO L272 TraceCheckUtils]: 6: Hoare triple {739#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,238 INFO L290 TraceCheckUtils]: 7: Hoare triple {739#(<= ~counter~0 0)} ~cond := #in~cond; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,238 INFO L290 TraceCheckUtils]: 8: Hoare triple {739#(<= ~counter~0 0)} assume !(0 == ~cond); {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,240 INFO L290 TraceCheckUtils]: 9: Hoare triple {739#(<= ~counter~0 0)} assume true; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,241 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {739#(<= ~counter~0 0)} {739#(<= ~counter~0 0)} #53#return; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,241 INFO L290 TraceCheckUtils]: 11: Hoare triple {739#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,242 INFO L290 TraceCheckUtils]: 12: Hoare triple {739#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,242 INFO L290 TraceCheckUtils]: 13: Hoare triple {773#(<= ~counter~0 1)} assume !!(#t~post5 < 2);havoc #t~post5; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,243 INFO L272 TraceCheckUtils]: 14: Hoare triple {773#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,243 INFO L290 TraceCheckUtils]: 15: Hoare triple {773#(<= ~counter~0 1)} ~cond := #in~cond; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,243 INFO L290 TraceCheckUtils]: 16: Hoare triple {773#(<= ~counter~0 1)} assume !(0 == ~cond); {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,244 INFO L290 TraceCheckUtils]: 17: Hoare triple {773#(<= ~counter~0 1)} assume true; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,244 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {773#(<= ~counter~0 1)} {773#(<= ~counter~0 1)} #55#return; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,245 INFO L290 TraceCheckUtils]: 19: Hoare triple {773#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,245 INFO L290 TraceCheckUtils]: 20: Hoare triple {773#(<= ~counter~0 1)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {798#(<= |main_#t~post5| 1)} is VALID [2022-04-28 14:35:11,246 INFO L290 TraceCheckUtils]: 21: Hoare triple {798#(<= |main_#t~post5| 1)} assume !(#t~post5 < 2);havoc #t~post5; {732#false} is VALID [2022-04-28 14:35:11,246 INFO L272 TraceCheckUtils]: 22: Hoare triple {732#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {732#false} is VALID [2022-04-28 14:35:11,246 INFO L290 TraceCheckUtils]: 23: Hoare triple {732#false} ~cond := #in~cond; {732#false} is VALID [2022-04-28 14:35:11,246 INFO L290 TraceCheckUtils]: 24: Hoare triple {732#false} assume 0 == ~cond; {732#false} is VALID [2022-04-28 14:35:11,246 INFO L290 TraceCheckUtils]: 25: Hoare triple {732#false} assume !false; {732#false} is VALID [2022-04-28 14:35:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 14:35:11,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 14:35:11,384 INFO L290 TraceCheckUtils]: 25: Hoare triple {732#false} assume !false; {732#false} is VALID [2022-04-28 14:35:11,384 INFO L290 TraceCheckUtils]: 24: Hoare triple {732#false} assume 0 == ~cond; {732#false} is VALID [2022-04-28 14:35:11,384 INFO L290 TraceCheckUtils]: 23: Hoare triple {732#false} ~cond := #in~cond; {732#false} is VALID [2022-04-28 14:35:11,385 INFO L272 TraceCheckUtils]: 22: Hoare triple {732#false} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {732#false} is VALID [2022-04-28 14:35:11,385 INFO L290 TraceCheckUtils]: 21: Hoare triple {798#(<= |main_#t~post5| 1)} assume !(#t~post5 < 2);havoc #t~post5; {732#false} is VALID [2022-04-28 14:35:11,386 INFO L290 TraceCheckUtils]: 20: Hoare triple {773#(<= ~counter~0 1)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {798#(<= |main_#t~post5| 1)} is VALID [2022-04-28 14:35:11,386 INFO L290 TraceCheckUtils]: 19: Hoare triple {773#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,387 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {731#true} {773#(<= ~counter~0 1)} #55#return; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,387 INFO L290 TraceCheckUtils]: 17: Hoare triple {731#true} assume true; {731#true} is VALID [2022-04-28 14:35:11,387 INFO L290 TraceCheckUtils]: 16: Hoare triple {731#true} assume !(0 == ~cond); {731#true} is VALID [2022-04-28 14:35:11,387 INFO L290 TraceCheckUtils]: 15: Hoare triple {731#true} ~cond := #in~cond; {731#true} is VALID [2022-04-28 14:35:11,387 INFO L272 TraceCheckUtils]: 14: Hoare triple {773#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {731#true} is VALID [2022-04-28 14:35:11,388 INFO L290 TraceCheckUtils]: 13: Hoare triple {773#(<= ~counter~0 1)} assume !!(#t~post5 < 2);havoc #t~post5; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,388 INFO L290 TraceCheckUtils]: 12: Hoare triple {739#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {773#(<= ~counter~0 1)} is VALID [2022-04-28 14:35:11,388 INFO L290 TraceCheckUtils]: 11: Hoare triple {739#(<= ~counter~0 0)} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,389 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {731#true} {739#(<= ~counter~0 0)} #53#return; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,389 INFO L290 TraceCheckUtils]: 9: Hoare triple {731#true} assume true; {731#true} is VALID [2022-04-28 14:35:11,389 INFO L290 TraceCheckUtils]: 8: Hoare triple {731#true} assume !(0 == ~cond); {731#true} is VALID [2022-04-28 14:35:11,390 INFO L290 TraceCheckUtils]: 7: Hoare triple {731#true} ~cond := #in~cond; {731#true} is VALID [2022-04-28 14:35:11,390 INFO L272 TraceCheckUtils]: 6: Hoare triple {739#(<= ~counter~0 0)} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {731#true} is VALID [2022-04-28 14:35:11,391 INFO L290 TraceCheckUtils]: 5: Hoare triple {739#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,392 INFO L272 TraceCheckUtils]: 4: Hoare triple {739#(<= ~counter~0 0)} call #t~ret6 := main(); {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,392 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {739#(<= ~counter~0 0)} {731#true} #61#return; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,393 INFO L290 TraceCheckUtils]: 2: Hoare triple {739#(<= ~counter~0 0)} assume true; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,393 INFO L290 TraceCheckUtils]: 1: Hoare triple {731#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {739#(<= ~counter~0 0)} is VALID [2022-04-28 14:35:11,393 INFO L272 TraceCheckUtils]: 0: Hoare triple {731#true} call ULTIMATE.init(); {731#true} is VALID [2022-04-28 14:35:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 14:35:11,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:35:11,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654097803] [2022-04-28 14:35:11,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:35:11,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398264173] [2022-04-28 14:35:11,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398264173] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 14:35:11,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 14:35:11,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-04-28 14:35:11,395 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:35:11,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1977456005] [2022-04-28 14:35:11,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1977456005] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:11,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:11,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:35:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857415355] [2022-04-28 14:35:11,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:35:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-04-28 14:35:11,396 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:35:11,396 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 14:35:11,415 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:11,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 14:35:11,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:11,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 14:35:11,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 14:35:11,417 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 14:35:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:11,530 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-04-28 14:35:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 14:35:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-04-28 14:35:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:35:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 14:35:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 46 transitions. [2022-04-28 14:35:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 14:35:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 46 transitions. [2022-04-28 14:35:11,544 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 46 transitions. [2022-04-28 14:35:11,590 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:11,591 INFO L225 Difference]: With dead ends: 42 [2022-04-28 14:35:11,591 INFO L226 Difference]: Without dead ends: 34 [2022-04-28 14:35:11,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-28 14:35:11,594 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 14:35:11,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 14:35:11,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-28 14:35:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-04-28 14:35:11,612 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:35:11,613 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:11,613 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:11,614 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:11,618 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-28 14:35:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-28 14:35:11,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:11,623 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:11,623 INFO L74 IsIncluded]: Start isIncluded. First operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 34 states. [2022-04-28 14:35:11,623 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 34 states. [2022-04-28 14:35:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:11,626 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-04-28 14:35:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-28 14:35:11,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:11,626 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:11,626 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:35:11,626 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:35:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-04-28 14:35:11,628 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 26 [2022-04-28 14:35:11,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:35:11,629 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-04-28 14:35:11,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 14:35:11,629 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 34 states and 37 transitions. [2022-04-28 14:35:11,663 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-28 14:35:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 14:35:11,664 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:11,664 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:11,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-28 14:35:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:11,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:11,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1363053011, now seen corresponding path program 1 times [2022-04-28 14:35:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:11,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [14418541] [2022-04-28 14:35:12,034 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 14:35:12,034 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 14:35:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1363053011, now seen corresponding path program 2 times [2022-04-28 14:35:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:12,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481809696] [2022-04-28 14:35:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:12,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:12,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:35:12,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621474128] [2022-04-28 14:35:12,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:35:12,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:12,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:12,049 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) [2022-04-28 14:35:12,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 14:35:12,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 14:35:12,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:35:12,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 14:35:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:12,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:35:12,234 INFO L272 TraceCheckUtils]: 0: Hoare triple {1113#true} call ULTIMATE.init(); {1113#true} is VALID [2022-04-28 14:35:12,234 INFO L290 TraceCheckUtils]: 1: Hoare triple {1113#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1113#true} is VALID [2022-04-28 14:35:12,236 INFO L290 TraceCheckUtils]: 2: Hoare triple {1113#true} assume true; {1113#true} is VALID [2022-04-28 14:35:12,236 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1113#true} {1113#true} #61#return; {1113#true} is VALID [2022-04-28 14:35:12,237 INFO L272 TraceCheckUtils]: 4: Hoare triple {1113#true} call #t~ret6 := main(); {1113#true} is VALID [2022-04-28 14:35:12,238 INFO L290 TraceCheckUtils]: 5: Hoare triple {1113#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1113#true} is VALID [2022-04-28 14:35:12,238 INFO L272 TraceCheckUtils]: 6: Hoare triple {1113#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1113#true} is VALID [2022-04-28 14:35:12,250 INFO L290 TraceCheckUtils]: 7: Hoare triple {1113#true} ~cond := #in~cond; {1113#true} is VALID [2022-04-28 14:35:12,251 INFO L290 TraceCheckUtils]: 8: Hoare triple {1113#true} assume !(0 == ~cond); {1113#true} is VALID [2022-04-28 14:35:12,251 INFO L290 TraceCheckUtils]: 9: Hoare triple {1113#true} assume true; {1113#true} is VALID [2022-04-28 14:35:12,251 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1113#true} {1113#true} #53#return; {1113#true} is VALID [2022-04-28 14:35:12,253 INFO L290 TraceCheckUtils]: 11: Hoare triple {1113#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1151#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:12,255 INFO L290 TraceCheckUtils]: 12: Hoare triple {1151#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1151#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:12,256 INFO L290 TraceCheckUtils]: 13: Hoare triple {1151#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 2);havoc #t~post5; {1151#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:12,256 INFO L272 TraceCheckUtils]: 14: Hoare triple {1151#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1113#true} is VALID [2022-04-28 14:35:12,256 INFO L290 TraceCheckUtils]: 15: Hoare triple {1113#true} ~cond := #in~cond; {1113#true} is VALID [2022-04-28 14:35:12,257 INFO L290 TraceCheckUtils]: 16: Hoare triple {1113#true} assume !(0 == ~cond); {1113#true} is VALID [2022-04-28 14:35:12,257 INFO L290 TraceCheckUtils]: 17: Hoare triple {1113#true} assume true; {1113#true} is VALID [2022-04-28 14:35:12,257 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {1113#true} {1151#(and (= main_~x~0 0) (= main_~y~0 0))} #55#return; {1151#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:12,258 INFO L290 TraceCheckUtils]: 19: Hoare triple {1151#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1176#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} is VALID [2022-04-28 14:35:12,259 INFO L290 TraceCheckUtils]: 20: Hoare triple {1176#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1176#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} is VALID [2022-04-28 14:35:12,259 INFO L290 TraceCheckUtils]: 21: Hoare triple {1176#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} assume !!(#t~post5 < 2);havoc #t~post5; {1176#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} is VALID [2022-04-28 14:35:12,260 INFO L272 TraceCheckUtils]: 22: Hoare triple {1176#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1186#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:35:12,260 INFO L290 TraceCheckUtils]: 23: Hoare triple {1186#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1190#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:35:12,261 INFO L290 TraceCheckUtils]: 24: Hoare triple {1190#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1114#false} is VALID [2022-04-28 14:35:12,261 INFO L290 TraceCheckUtils]: 25: Hoare triple {1114#false} assume !false; {1114#false} is VALID [2022-04-28 14:35:12,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 14:35:12,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 14:35:12,412 INFO L290 TraceCheckUtils]: 25: Hoare triple {1114#false} assume !false; {1114#false} is VALID [2022-04-28 14:35:12,413 INFO L290 TraceCheckUtils]: 24: Hoare triple {1190#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1114#false} is VALID [2022-04-28 14:35:12,413 INFO L290 TraceCheckUtils]: 23: Hoare triple {1186#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1190#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:35:12,414 INFO L272 TraceCheckUtils]: 22: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1186#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:35:12,414 INFO L290 TraceCheckUtils]: 21: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(#t~post5 < 2);havoc #t~post5; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,415 INFO L290 TraceCheckUtils]: 20: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,499 INFO L290 TraceCheckUtils]: 19: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,500 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {1113#true} {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #55#return; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,500 INFO L290 TraceCheckUtils]: 17: Hoare triple {1113#true} assume true; {1113#true} is VALID [2022-04-28 14:35:12,501 INFO L290 TraceCheckUtils]: 16: Hoare triple {1113#true} assume !(0 == ~cond); {1113#true} is VALID [2022-04-28 14:35:12,501 INFO L290 TraceCheckUtils]: 15: Hoare triple {1113#true} ~cond := #in~cond; {1113#true} is VALID [2022-04-28 14:35:12,501 INFO L272 TraceCheckUtils]: 14: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1113#true} is VALID [2022-04-28 14:35:12,501 INFO L290 TraceCheckUtils]: 13: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} assume !!(#t~post5 < 2);havoc #t~post5; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,502 INFO L290 TraceCheckUtils]: 12: Hoare triple {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,502 INFO L290 TraceCheckUtils]: 11: Hoare triple {1113#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1206#(= (+ (* 2 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* 5 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0))) (+ (* main_~x~0 12) (* main_~y~0 main_~y~0)))} is VALID [2022-04-28 14:35:12,502 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1113#true} {1113#true} #53#return; {1113#true} is VALID [2022-04-28 14:35:12,502 INFO L290 TraceCheckUtils]: 9: Hoare triple {1113#true} assume true; {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L290 TraceCheckUtils]: 8: Hoare triple {1113#true} assume !(0 == ~cond); {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L290 TraceCheckUtils]: 7: Hoare triple {1113#true} ~cond := #in~cond; {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L272 TraceCheckUtils]: 6: Hoare triple {1113#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L290 TraceCheckUtils]: 5: Hoare triple {1113#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L272 TraceCheckUtils]: 4: Hoare triple {1113#true} call #t~ret6 := main(); {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1113#true} {1113#true} #61#return; {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L290 TraceCheckUtils]: 2: Hoare triple {1113#true} assume true; {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L290 TraceCheckUtils]: 1: Hoare triple {1113#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1113#true} is VALID [2022-04-28 14:35:12,503 INFO L272 TraceCheckUtils]: 0: Hoare triple {1113#true} call ULTIMATE.init(); {1113#true} is VALID [2022-04-28 14:35:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-28 14:35:12,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:35:12,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481809696] [2022-04-28 14:35:12,504 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:35:12,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621474128] [2022-04-28 14:35:12,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621474128] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-28 14:35:12,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-28 14:35:12,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-28 14:35:12,505 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:35:12,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [14418541] [2022-04-28 14:35:12,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [14418541] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:12,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:12,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 14:35:12,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760530435] [2022-04-28 14:35:12,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:35:12,506 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-28 14:35:12,506 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:35:12,506 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 14:35:12,587 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 14:35:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 14:35:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-28 14:35:12,588 INFO L87 Difference]: Start difference. First operand 34 states and 37 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 14:35:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:12,723 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-04-28 14:35:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 14:35:12,724 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-28 14:35:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:35:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 14:35:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-28 14:35:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 14:35:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-28 14:35:12,726 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 32 transitions. [2022-04-28 14:35:12,866 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:12,867 INFO L225 Difference]: With dead ends: 40 [2022-04-28 14:35:12,867 INFO L226 Difference]: Without dead ends: 36 [2022-04-28 14:35:12,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-28 14:35:12,868 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 14:35:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 14:35:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-28 14:35:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-04-28 14:35:12,896 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:35:12,896 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:12,897 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:12,897 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:12,900 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-04-28 14:35:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-28 14:35:12,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:12,901 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:12,901 INFO L74 IsIncluded]: Start isIncluded. First operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 36 states. [2022-04-28 14:35:12,901 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 36 states. [2022-04-28 14:35:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:12,904 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-04-28 14:35:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-28 14:35:12,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:12,904 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:12,904 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:35:12,904 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:35:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 14:35:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2022-04-28 14:35:12,906 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 26 [2022-04-28 14:35:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:35:12,907 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2022-04-28 14:35:12,907 INFO L496 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 14:35:12,907 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 36 states and 38 transitions. [2022-04-28 14:35:13,039 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2022-04-28 14:35:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-28 14:35:13,040 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:13,040 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:13,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-28 14:35:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:13,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1559147673, now seen corresponding path program 1 times [2022-04-28 14:35:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [181355156] [2022-04-28 14:35:13,376 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 14:35:13,377 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 14:35:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1559147673, now seen corresponding path program 2 times [2022-04-28 14:35:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101878989] [2022-04-28 14:35:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:13,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:35:13,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982799881] [2022-04-28 14:35:13,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:35:13,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:13,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:13,390 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) [2022-04-28 14:35:13,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-28 14:35:13,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 14:35:13,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 14:35:13,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-28 14:35:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 14:35:13,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 14:35:13,803 INFO L272 TraceCheckUtils]: 0: Hoare triple {1501#true} call ULTIMATE.init(); {1501#true} is VALID [2022-04-28 14:35:13,803 INFO L290 TraceCheckUtils]: 1: Hoare triple {1501#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1501#true} is VALID [2022-04-28 14:35:13,803 INFO L290 TraceCheckUtils]: 2: Hoare triple {1501#true} assume true; {1501#true} is VALID [2022-04-28 14:35:13,803 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1501#true} {1501#true} #61#return; {1501#true} is VALID [2022-04-28 14:35:13,803 INFO L272 TraceCheckUtils]: 4: Hoare triple {1501#true} call #t~ret6 := main(); {1501#true} is VALID [2022-04-28 14:35:13,804 INFO L290 TraceCheckUtils]: 5: Hoare triple {1501#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1501#true} is VALID [2022-04-28 14:35:13,804 INFO L272 TraceCheckUtils]: 6: Hoare triple {1501#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1501#true} is VALID [2022-04-28 14:35:13,804 INFO L290 TraceCheckUtils]: 7: Hoare triple {1501#true} ~cond := #in~cond; {1501#true} is VALID [2022-04-28 14:35:13,804 INFO L290 TraceCheckUtils]: 8: Hoare triple {1501#true} assume !(0 == ~cond); {1501#true} is VALID [2022-04-28 14:35:13,804 INFO L290 TraceCheckUtils]: 9: Hoare triple {1501#true} assume true; {1501#true} is VALID [2022-04-28 14:35:13,804 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1501#true} {1501#true} #53#return; {1501#true} is VALID [2022-04-28 14:35:13,805 INFO L290 TraceCheckUtils]: 11: Hoare triple {1501#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1539#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:13,805 INFO L290 TraceCheckUtils]: 12: Hoare triple {1539#(and (= main_~c~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1539#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:13,806 INFO L290 TraceCheckUtils]: 13: Hoare triple {1539#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 2);havoc #t~post5; {1539#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:13,806 INFO L272 TraceCheckUtils]: 14: Hoare triple {1539#(and (= main_~c~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1501#true} is VALID [2022-04-28 14:35:13,806 INFO L290 TraceCheckUtils]: 15: Hoare triple {1501#true} ~cond := #in~cond; {1501#true} is VALID [2022-04-28 14:35:13,806 INFO L290 TraceCheckUtils]: 16: Hoare triple {1501#true} assume !(0 == ~cond); {1501#true} is VALID [2022-04-28 14:35:13,806 INFO L290 TraceCheckUtils]: 17: Hoare triple {1501#true} assume true; {1501#true} is VALID [2022-04-28 14:35:13,807 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {1501#true} {1539#(and (= main_~c~0 0) (= main_~y~0 0))} #55#return; {1539#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-28 14:35:13,808 INFO L290 TraceCheckUtils]: 19: Hoare triple {1539#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:35:13,808 INFO L290 TraceCheckUtils]: 20: Hoare triple {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:35:13,809 INFO L290 TraceCheckUtils]: 21: Hoare triple {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !!(#t~post5 < 2);havoc #t~post5; {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:35:13,809 INFO L272 TraceCheckUtils]: 22: Hoare triple {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1501#true} is VALID [2022-04-28 14:35:13,809 INFO L290 TraceCheckUtils]: 23: Hoare triple {1501#true} ~cond := #in~cond; {1501#true} is VALID [2022-04-28 14:35:13,809 INFO L290 TraceCheckUtils]: 24: Hoare triple {1501#true} assume !(0 == ~cond); {1501#true} is VALID [2022-04-28 14:35:13,809 INFO L290 TraceCheckUtils]: 25: Hoare triple {1501#true} assume true; {1501#true} is VALID [2022-04-28 14:35:13,810 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1501#true} {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} #55#return; {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-28 14:35:13,810 INFO L290 TraceCheckUtils]: 27: Hoare triple {1564#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !(~c~0 < ~k~0); {1589#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-28 14:35:13,810 INFO L272 TraceCheckUtils]: 28: Hoare triple {1589#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if 0 == -2 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 - 5 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~y~0 * ~y~0 + 12 * ~x~0 then 1 else 0)); {1501#true} is VALID [2022-04-28 14:35:13,810 INFO L290 TraceCheckUtils]: 29: Hoare triple {1501#true} ~cond := #in~cond; {1501#true} is VALID [2022-04-28 14:35:13,810 INFO L290 TraceCheckUtils]: 30: Hoare triple {1501#true} assume !(0 == ~cond); {1501#true} is VALID [2022-04-28 14:35:13,811 INFO L290 TraceCheckUtils]: 31: Hoare triple {1501#true} assume true; {1501#true} is VALID [2022-04-28 14:35:13,811 INFO L284 TraceCheckUtils]: 32: Hoare quadruple {1501#true} {1589#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} #57#return; {1589#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-28 14:35:13,812 INFO L272 TraceCheckUtils]: 33: Hoare triple {1589#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {1608#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 14:35:13,812 INFO L290 TraceCheckUtils]: 34: Hoare triple {1608#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1612#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 14:35:13,813 INFO L290 TraceCheckUtils]: 35: Hoare triple {1612#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1502#false} is VALID [2022-04-28 14:35:13,813 INFO L290 TraceCheckUtils]: 36: Hoare triple {1502#false} assume !false; {1502#false} is VALID [2022-04-28 14:35:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-28 14:35:13,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 14:35:14,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 14:35:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101878989] [2022-04-28 14:35:14,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 14:35:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982799881] [2022-04-28 14:35:14,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982799881] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 14:35:14,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-28 14:35:14,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-28 14:35:14,150 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 14:35:14,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [181355156] [2022-04-28 14:35:14,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [181355156] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 14:35:14,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 14:35:14,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 14:35:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897570951] [2022-04-28 14:35:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 14:35:14,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2022-04-28 14:35:14,151 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 14:35:14,151 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-28 14:35:14,178 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:14,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 14:35:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 14:35:14,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-28 14:35:14,179 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-28 14:35:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:14,428 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-04-28 14:35:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 14:35:14,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2022-04-28 14:35:14,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 14:35:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-28 14:35:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 44 transitions. [2022-04-28 14:35:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-28 14:35:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 44 transitions. [2022-04-28 14:35:14,432 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 44 transitions. [2022-04-28 14:35:14,468 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:14,469 INFO L225 Difference]: With dead ends: 44 [2022-04-28 14:35:14,469 INFO L226 Difference]: Without dead ends: 38 [2022-04-28 14:35:14,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-28 14:35:14,470 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 14:35:14,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 141 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 14:35:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-28 14:35:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-04-28 14:35:14,498 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 14:35:14,498 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 14:35:14,498 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 14:35:14,498 INFO L87 Difference]: Start difference. First operand 38 states. Second operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 14:35:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:14,500 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-28 14:35:14,500 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-28 14:35:14,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:14,500 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:14,501 INFO L74 IsIncluded]: Start isIncluded. First operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 38 states. [2022-04-28 14:35:14,501 INFO L87 Difference]: Start difference. First operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 38 states. [2022-04-28 14:35:14,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 14:35:14,502 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-28 14:35:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-28 14:35:14,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 14:35:14,502 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 14:35:14,502 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 14:35:14,502 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 14:35:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 14:35:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-04-28 14:35:14,504 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 37 [2022-04-28 14:35:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 14:35:14,504 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-04-28 14:35:14,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-28 14:35:14,504 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 38 states and 41 transitions. [2022-04-28 14:35:14,665 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 14:35:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-28 14:35:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-28 14:35:14,666 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 14:35:14,666 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 14:35:14,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-28 14:35:14,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:14,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 14:35:14,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 14:35:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash -951509150, now seen corresponding path program 1 times [2022-04-28 14:35:14,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 14:35:14,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1858057160] [2022-04-28 14:35:14,999 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 14:35:14,999 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 14:35:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -951509150, now seen corresponding path program 2 times [2022-04-28 14:35:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 14:35:14,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614945640] [2022-04-28 14:35:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 14:35:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 14:35:15,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 14:35:15,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369039887] [2022-04-28 14:35:15,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 14:35:15,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:15,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 14:35:15,032 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) [2022-04-28 14:35:15,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-28 14:35:15,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 14:35:15,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-28 14:35:15,080 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 14:35:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 14:35:15,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 14:35:15,133 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 14:35:15,133 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 14:35:15,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 14:35:15,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-28 14:35:15,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 14:35:15,340 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2] [2022-04-28 14:35:15,342 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 14:35:15,353 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 14:35:15,354 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 14:35:15,355 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 14:35:15,355 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 14:35:15,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 02:35:15 BoogieIcfgContainer [2022-04-28 14:35:15,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 14:35:15,357 INFO L158 Benchmark]: Toolchain (without parser) took 7820.03ms. Allocated memory was 178.3MB in the beginning and 231.7MB in the end (delta: 53.5MB). Free memory was 127.4MB in the beginning and 94.5MB in the end (delta: 32.9MB). Peak memory consumption was 86.7MB. Max. memory is 8.0GB. [2022-04-28 14:35:15,358 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 178.3MB. Free memory was 143.7MB in the beginning and 143.6MB in the end (delta: 68.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 14:35:15,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.17ms. Allocated memory was 178.3MB in the beginning and 231.7MB in the end (delta: 53.5MB). Free memory was 127.2MB in the beginning and 207.9MB in the end (delta: -80.7MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2022-04-28 14:35:15,358 INFO L158 Benchmark]: Boogie Preprocessor took 26.16ms. Allocated memory is still 231.7MB. Free memory was 207.9MB in the beginning and 206.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 14:35:15,358 INFO L158 Benchmark]: RCFGBuilder took 303.44ms. Allocated memory is still 231.7MB. Free memory was 206.2MB in the beginning and 195.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 14:35:15,359 INFO L158 Benchmark]: TraceAbstraction took 7262.03ms. Allocated memory is still 231.7MB. Free memory was 194.7MB in the beginning and 94.5MB in the end (delta: 100.2MB). Peak memory consumption was 100.7MB. Max. memory is 8.0GB. [2022-04-28 14:35:15,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 178.3MB. Free memory was 143.7MB in the beginning and 143.6MB in the end (delta: 68.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 222.17ms. Allocated memory was 178.3MB in the beginning and 231.7MB in the end (delta: 53.5MB). Free memory was 127.2MB in the beginning and 207.9MB in the end (delta: -80.7MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.16ms. Allocated memory is still 231.7MB. Free memory was 207.9MB in the beginning and 206.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 303.44ms. Allocated memory is still 231.7MB. Free memory was 206.2MB in the beginning and 195.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 7262.03ms. Allocated memory is still 231.7MB. Free memory was 194.7MB in the beginning and 94.5MB in the end (delta: 100.2MB). Peak memory consumption was 100.7MB. 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] EXPR counter++ [L28] COND TRUE counter++<2 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x [L28] EXPR counter++ [L28] COND TRUE counter++<2 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x [L28] EXPR counter++ [L28] COND FALSE !(counter++<2) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L10] COND FALSE !(!(cond)) [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) [L40] CALL __VERIFIER_assert(k*y == y*y) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.2s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 476 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 317 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 159 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-28 14:35:15,377 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...