/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 03:06:51,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 03:06:51,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 03:06:51,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 03:06:51,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 03:06:51,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 03:06:51,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 03:06:51,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 03:06:51,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 03:06:51,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 03:06:51,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 03:06:51,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 03:06:51,870 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 03:06:51,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 03:06:51,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 03:06:51,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 03:06:51,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 03:06:51,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 03:06:51,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 03:06:51,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 03:06:51,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 03:06:51,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 03:06:51,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 03:06:51,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 03:06:51,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 03:06:51,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 03:06:51,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 03:06:51,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 03:06:51,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 03:06:51,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 03:06:51,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 03:06:51,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 03:06:51,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 03:06:51,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 03:06:51,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 03:06:51,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 03:06:51,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 03:06:51,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 03:06:51,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 03:06:51,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 03:06:51,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:06:51,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 03:06:51,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 03:06:51,903 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 03:06:51,903 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 03:06:51,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 03:06:51,903 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 03:06:51,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 03:06:52,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 03:06:52,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 03:06:52,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 03:06:52,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 03:06:52,145 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 03:06:52,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c [2022-04-28 03:06:52,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71f523bb/073a7255be6e4bfda6fd682e53a5eb2c/FLAG197d7c42e [2022-04-28 03:06:52,555 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 03:06:52,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c [2022-04-28 03:06:52,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71f523bb/073a7255be6e4bfda6fd682e53a5eb2c/FLAG197d7c42e [2022-04-28 03:06:52,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d71f523bb/073a7255be6e4bfda6fd682e53a5eb2c [2022-04-28 03:06:52,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 03:06:52,571 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 03:06:52,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 03:06:52,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 03:06:52,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 03:06:52,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b2818a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52, skipping insertion in model container [2022-04-28 03:06:52,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 03:06:52,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 03:06:52,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c[327,340] [2022-04-28 03:06:52,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:06:52,741 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 03:06:52,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_1-1.c[327,340] [2022-04-28 03:06:52,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:06:52,765 INFO L208 MainTranslator]: Completed translation [2022-04-28 03:06:52,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52 WrapperNode [2022-04-28 03:06:52,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 03:06:52,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 03:06:52,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 03:06:52,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 03:06:52,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 03:06:52,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 03:06:52,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 03:06:52,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 03:06:52,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (1/1) ... [2022-04-28 03:06:52,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:06:52,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:06:52,829 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 03:06:52,840 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 03:06:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 03:06:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 03:06:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 03:06:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 03:06:52,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 03:06:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 03:06:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 03:06:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 03:06:52,916 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 03:06:52,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 03:06:52,993 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 03:06:52,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 03:06:52,999 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 03:06:53,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:06:53 BoogieIcfgContainer [2022-04-28 03:06:53,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 03:06:53,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 03:06:53,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 03:06:53,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 03:06:53,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:06:52" (1/3) ... [2022-04-28 03:06:53,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c070a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:06:53, skipping insertion in model container [2022-04-28 03:06:53,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:06:52" (2/3) ... [2022-04-28 03:06:53,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c070a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:06:53, skipping insertion in model container [2022-04-28 03:06:53,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:06:53" (3/3) ... [2022-04-28 03:06:53,007 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_1-1.c [2022-04-28 03:06:53,019 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 03:06:53,020 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 03:06:53,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 03:06:53,060 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@6b27cf38, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@614c0635 [2022-04-28 03:06:53,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 03:06:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 03:06:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 03:06:53,072 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:53,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:53,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 1 times [2022-04-28 03:06:53,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:53,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [366317121] [2022-04-28 03:06:53,094 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:06:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash -219174432, now seen corresponding path program 2 times [2022-04-28 03:06:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462941074] [2022-04-28 03:06:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:53,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:53,244 INFO L290 TraceCheckUtils]: 0: Hoare triple {26#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-28 03:06:53,258 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-28 03:06:53,259 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #34#return; {21#true} is VALID [2022-04-28 03:06:53,261 INFO L272 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {26#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:53,261 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-28 03:06:53,261 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-28 03:06:53,261 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #34#return; {21#true} is VALID [2022-04-28 03:06:53,261 INFO L272 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret5 := main(); {21#true} is VALID [2022-04-28 03:06:53,262 INFO L290 TraceCheckUtils]: 5: Hoare triple {21#true} ~x~0 := 0;~y~0 := 1; {21#true} is VALID [2022-04-28 03:06:53,262 INFO L290 TraceCheckUtils]: 6: Hoare triple {21#true} assume !true; {22#false} is VALID [2022-04-28 03:06:53,263 INFO L272 TraceCheckUtils]: 7: Hoare triple {22#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {22#false} is VALID [2022-04-28 03:06:53,263 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2022-04-28 03:06:53,263 INFO L290 TraceCheckUtils]: 9: Hoare triple {22#false} assume 0 == ~cond; {22#false} is VALID [2022-04-28 03:06:53,263 INFO L290 TraceCheckUtils]: 10: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-04-28 03:06:53,264 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 03:06:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:53,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462941074] [2022-04-28 03:06:53,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462941074] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:53,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:53,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 03:06:53,267 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:53,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [366317121] [2022-04-28 03:06:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [366317121] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:53,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 03:06:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32907862] [2022-04-28 03:06:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:53,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:06:53,274 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:53,276 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,292 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:53,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 03:06:53,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 03:06:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 03:06:53,312 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:53,375 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-04-28 03:06:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 03:06:53,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:06:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-28 03:06:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-28 03:06:53,389 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 32 transitions. [2022-04-28 03:06:53,459 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 03:06:53,466 INFO L225 Difference]: With dead ends: 29 [2022-04-28 03:06:53,467 INFO L226 Difference]: Without dead ends: 12 [2022-04-28 03:06:53,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 03:06:53,487 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:53,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:06:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-04-28 03:06:53,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-04-28 03:06:53,514 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:53,514 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,515 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,516 INFO L87 Difference]: Start difference. First operand 12 states. Second operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:53,519 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-04-28 03:06:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-28 03:06:53,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:53,519 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:53,520 INFO L74 IsIncluded]: Start isIncluded. First operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 12 states. [2022-04-28 03:06:53,520 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 12 states. [2022-04-28 03:06:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:53,522 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-04-28 03:06:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-28 03:06:53,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:53,523 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:53,523 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:53,523 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-04-28 03:06:53,526 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-04-28 03:06:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:53,527 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-04-28 03:06:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,527 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 12 states and 12 transitions. [2022-04-28 03:06:53,543 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-28 03:06:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 03:06:53,544 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:53,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:53,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 03:06:53,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 1 times [2022-04-28 03:06:53,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:53,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2104101615] [2022-04-28 03:06:53,547 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:06:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash -222868516, now seen corresponding path program 2 times [2022-04-28 03:06:53,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:53,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382820854] [2022-04-28 03:06:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:53,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:53,667 INFO L290 TraceCheckUtils]: 0: Hoare triple {141#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {135#true} is VALID [2022-04-28 03:06:53,667 INFO L290 TraceCheckUtils]: 1: Hoare triple {135#true} assume true; {135#true} is VALID [2022-04-28 03:06:53,667 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {135#true} {135#true} #34#return; {135#true} is VALID [2022-04-28 03:06:53,669 INFO L272 TraceCheckUtils]: 0: Hoare triple {135#true} call ULTIMATE.init(); {141#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:53,670 INFO L290 TraceCheckUtils]: 1: Hoare triple {141#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {135#true} is VALID [2022-04-28 03:06:53,670 INFO L290 TraceCheckUtils]: 2: Hoare triple {135#true} assume true; {135#true} is VALID [2022-04-28 03:06:53,670 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {135#true} {135#true} #34#return; {135#true} is VALID [2022-04-28 03:06:53,670 INFO L272 TraceCheckUtils]: 4: Hoare triple {135#true} call #t~ret5 := main(); {135#true} is VALID [2022-04-28 03:06:53,672 INFO L290 TraceCheckUtils]: 5: Hoare triple {135#true} ~x~0 := 0;~y~0 := 1; {140#(= main_~x~0 0)} is VALID [2022-04-28 03:06:53,673 INFO L290 TraceCheckUtils]: 6: Hoare triple {140#(= main_~x~0 0)} assume !(~x~0 % 4294967296 < 6); {136#false} is VALID [2022-04-28 03:06:53,673 INFO L272 TraceCheckUtils]: 7: Hoare triple {136#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {136#false} is VALID [2022-04-28 03:06:53,674 INFO L290 TraceCheckUtils]: 8: Hoare triple {136#false} ~cond := #in~cond; {136#false} is VALID [2022-04-28 03:06:53,674 INFO L290 TraceCheckUtils]: 9: Hoare triple {136#false} assume 0 == ~cond; {136#false} is VALID [2022-04-28 03:06:53,674 INFO L290 TraceCheckUtils]: 10: Hoare triple {136#false} assume !false; {136#false} is VALID [2022-04-28 03:06:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:53,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:53,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382820854] [2022-04-28 03:06:53,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382820854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:53,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:53,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 03:06:53,677 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:53,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2104101615] [2022-04-28 03:06:53,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2104101615] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:53,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:53,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 03:06:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173166540] [2022-04-28 03:06:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:06:53,681 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:53,681 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,702 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:53,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 03:06:53,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:53,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 03:06:53,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 03:06:53,704 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:53,773 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-28 03:06:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 03:06:53,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:06:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-04-28 03:06:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-04-28 03:06:53,777 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 18 transitions. [2022-04-28 03:06:53,799 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 03:06:53,803 INFO L225 Difference]: With dead ends: 18 [2022-04-28 03:06:53,804 INFO L226 Difference]: Without dead ends: 13 [2022-04-28 03:06:53,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-28 03:06:53,805 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:53,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:06:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-28 03:06:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-04-28 03:06:53,810 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:53,810 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,810 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,810 INFO L87 Difference]: Start difference. First operand 13 states. Second operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:53,812 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-28 03:06:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-28 03:06:53,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:53,812 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:53,812 INFO L74 IsIncluded]: Start isIncluded. First operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-28 03:06:53,813 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 13 states. [2022-04-28 03:06:53,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:53,814 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-04-28 03:06:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-28 03:06:53,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:53,814 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:53,814 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:53,815 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-04-28 03:06:53,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-04-28 03:06:53,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:53,822 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-04-28 03:06:53,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:53,822 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 13 states and 13 transitions. [2022-04-28 03:06:53,842 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-04-28 03:06:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 03:06:53,843 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:53,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 03:06:53,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:53,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 1 times [2022-04-28 03:06:53,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:53,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [228766650] [2022-04-28 03:06:53,883 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 03:06:53,883 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 03:06:53,883 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 03:06:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1717471862, now seen corresponding path program 2 times [2022-04-28 03:06:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:53,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070623127] [2022-04-28 03:06:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:53,998 INFO L290 TraceCheckUtils]: 0: Hoare triple {241#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {234#true} is VALID [2022-04-28 03:06:53,998 INFO L290 TraceCheckUtils]: 1: Hoare triple {234#true} assume true; {234#true} is VALID [2022-04-28 03:06:53,998 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {234#true} {234#true} #34#return; {234#true} is VALID [2022-04-28 03:06:53,999 INFO L272 TraceCheckUtils]: 0: Hoare triple {234#true} call ULTIMATE.init(); {241#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:54,000 INFO L290 TraceCheckUtils]: 1: Hoare triple {241#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {234#true} is VALID [2022-04-28 03:06:54,000 INFO L290 TraceCheckUtils]: 2: Hoare triple {234#true} assume true; {234#true} is VALID [2022-04-28 03:06:54,000 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {234#true} {234#true} #34#return; {234#true} is VALID [2022-04-28 03:06:54,001 INFO L272 TraceCheckUtils]: 4: Hoare triple {234#true} call #t~ret5 := main(); {234#true} is VALID [2022-04-28 03:06:54,002 INFO L290 TraceCheckUtils]: 5: Hoare triple {234#true} ~x~0 := 0;~y~0 := 1; {239#(= main_~x~0 0)} is VALID [2022-04-28 03:06:54,003 INFO L290 TraceCheckUtils]: 6: Hoare triple {239#(= main_~x~0 0)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {240#(and (<= main_~x~0 1) (not (<= (+ (div main_~x~0 4294967296) 1) 0)))} is VALID [2022-04-28 03:06:54,007 INFO L290 TraceCheckUtils]: 7: Hoare triple {240#(and (<= main_~x~0 1) (not (<= (+ (div main_~x~0 4294967296) 1) 0)))} assume !(~x~0 % 4294967296 < 6); {235#false} is VALID [2022-04-28 03:06:54,007 INFO L272 TraceCheckUtils]: 8: Hoare triple {235#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {235#false} is VALID [2022-04-28 03:06:54,008 INFO L290 TraceCheckUtils]: 9: Hoare triple {235#false} ~cond := #in~cond; {235#false} is VALID [2022-04-28 03:06:54,008 INFO L290 TraceCheckUtils]: 10: Hoare triple {235#false} assume 0 == ~cond; {235#false} is VALID [2022-04-28 03:06:54,008 INFO L290 TraceCheckUtils]: 11: Hoare triple {235#false} assume !false; {235#false} is VALID [2022-04-28 03:06:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:54,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070623127] [2022-04-28 03:06:54,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070623127] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 03:06:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82572623] [2022-04-28 03:06:54,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 03:06:54,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:54,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:06:54,011 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 03:06:54,012 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 03:06:54,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 03:06:54,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 03:06:54,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 03:06:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:54,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 03:06:54,179 INFO L272 TraceCheckUtils]: 0: Hoare triple {234#true} call ULTIMATE.init(); {234#true} is VALID [2022-04-28 03:06:54,180 INFO L290 TraceCheckUtils]: 1: Hoare triple {234#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(18, 2);call #Ultimate.allocInit(12, 3); {234#true} is VALID [2022-04-28 03:06:54,180 INFO L290 TraceCheckUtils]: 2: Hoare triple {234#true} assume true; {234#true} is VALID [2022-04-28 03:06:54,180 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {234#true} {234#true} #34#return; {234#true} is VALID [2022-04-28 03:06:54,180 INFO L272 TraceCheckUtils]: 4: Hoare triple {234#true} call #t~ret5 := main(); {234#true} is VALID [2022-04-28 03:06:54,183 INFO L290 TraceCheckUtils]: 5: Hoare triple {234#true} ~x~0 := 0;~y~0 := 1; {260#(= main_~y~0 1)} is VALID [2022-04-28 03:06:54,185 INFO L290 TraceCheckUtils]: 6: Hoare triple {260#(= main_~y~0 1)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {264#(= main_~y~0 2)} is VALID [2022-04-28 03:06:54,186 INFO L290 TraceCheckUtils]: 7: Hoare triple {264#(= main_~y~0 2)} assume !(~x~0 % 4294967296 < 6); {264#(= main_~y~0 2)} is VALID [2022-04-28 03:06:54,187 INFO L272 TraceCheckUtils]: 8: Hoare triple {264#(= main_~y~0 2)} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {271#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:54,190 INFO L290 TraceCheckUtils]: 9: Hoare triple {271#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {275#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:54,191 INFO L290 TraceCheckUtils]: 10: Hoare triple {275#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {235#false} is VALID [2022-04-28 03:06:54,191 INFO L290 TraceCheckUtils]: 11: Hoare triple {235#false} assume !false; {235#false} is VALID [2022-04-28 03:06:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:54,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 03:06:54,350 INFO L290 TraceCheckUtils]: 11: Hoare triple {235#false} assume !false; {235#false} is VALID [2022-04-28 03:06:54,351 INFO L290 TraceCheckUtils]: 10: Hoare triple {275#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {235#false} is VALID [2022-04-28 03:06:54,351 INFO L290 TraceCheckUtils]: 9: Hoare triple {271#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {275#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:54,352 INFO L272 TraceCheckUtils]: 8: Hoare triple {291#(not (= 64 (mod main_~y~0 4294967296)))} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {271#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:54,352 INFO L290 TraceCheckUtils]: 7: Hoare triple {291#(not (= 64 (mod main_~y~0 4294967296)))} assume !(~x~0 % 4294967296 < 6); {291#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:54,355 INFO L290 TraceCheckUtils]: 6: Hoare triple {298#(not (= (mod (* main_~y~0 2) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {291#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:54,356 INFO L290 TraceCheckUtils]: 5: Hoare triple {234#true} ~x~0 := 0;~y~0 := 1; {298#(not (= (mod (* main_~y~0 2) 4294967296) 64))} is VALID [2022-04-28 03:06:54,356 INFO L272 TraceCheckUtils]: 4: Hoare triple {234#true} call #t~ret5 := main(); {234#true} is VALID [2022-04-28 03:06:54,357 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {234#true} {234#true} #34#return; {234#true} is VALID [2022-04-28 03:06:54,357 INFO L290 TraceCheckUtils]: 2: Hoare triple {234#true} assume true; {234#true} is VALID [2022-04-28 03:06:54,357 INFO L290 TraceCheckUtils]: 1: Hoare triple {234#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(18, 2);call #Ultimate.allocInit(12, 3); {234#true} is VALID [2022-04-28 03:06:54,357 INFO L272 TraceCheckUtils]: 0: Hoare triple {234#true} call ULTIMATE.init(); {234#true} is VALID [2022-04-28 03:06:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:54,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82572623] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 03:06:54,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 03:06:54,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2022-04-28 03:06:54,359 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:54,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [228766650] [2022-04-28 03:06:54,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [228766650] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:54,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:54,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 03:06:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848513169] [2022-04-28 03:06:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:54,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 03:06:54,362 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:54,362 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,373 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:54,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 03:06:54,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:54,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 03:06:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-04-28 03:06:54,376 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:54,441 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-04-28 03:06:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 03:06:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 03:06:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2022-04-28 03:06:54,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2022-04-28 03:06:54,454 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 19 transitions. [2022-04-28 03:06:54,479 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:54,480 INFO L225 Difference]: With dead ends: 19 [2022-04-28 03:06:54,480 INFO L226 Difference]: Without dead ends: 14 [2022-04-28 03:06:54,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-04-28 03:06:54,487 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:54,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:06:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-28 03:06:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-28 03:06:54,497 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:54,498 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,498 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,498 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:54,499 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-04-28 03:06:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-28 03:06:54,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:54,500 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:54,500 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-28 03:06:54,500 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-04-28 03:06:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:54,501 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-04-28 03:06:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-28 03:06:54,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:54,502 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:54,502 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:54,502 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-04-28 03:06:54,503 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-04-28 03:06:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:54,503 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-04-28 03:06:54,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:54,504 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 14 transitions. [2022-04-28 03:06:54,517 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:54,517 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-04-28 03:06:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-28 03:06:54,518 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:54,518 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:54,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-28 03:06:54,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:54,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:54,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:54,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 3 times [2022-04-28 03:06:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:54,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1097810797] [2022-04-28 03:06:54,736 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 03:06:54,736 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 03:06:54,736 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 03:06:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1738481436, now seen corresponding path program 4 times [2022-04-28 03:06:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:54,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269910157] [2022-04-28 03:06:54,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:54,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:54,822 INFO L290 TraceCheckUtils]: 0: Hoare triple {425#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {417#true} is VALID [2022-04-28 03:06:54,822 INFO L290 TraceCheckUtils]: 1: Hoare triple {417#true} assume true; {417#true} is VALID [2022-04-28 03:06:54,822 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {417#true} {417#true} #34#return; {417#true} is VALID [2022-04-28 03:06:54,823 INFO L272 TraceCheckUtils]: 0: Hoare triple {417#true} call ULTIMATE.init(); {425#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:54,823 INFO L290 TraceCheckUtils]: 1: Hoare triple {425#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {417#true} is VALID [2022-04-28 03:06:54,823 INFO L290 TraceCheckUtils]: 2: Hoare triple {417#true} assume true; {417#true} is VALID [2022-04-28 03:06:54,823 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {417#true} {417#true} #34#return; {417#true} is VALID [2022-04-28 03:06:54,824 INFO L272 TraceCheckUtils]: 4: Hoare triple {417#true} call #t~ret5 := main(); {417#true} is VALID [2022-04-28 03:06:54,824 INFO L290 TraceCheckUtils]: 5: Hoare triple {417#true} ~x~0 := 0;~y~0 := 1; {422#(= main_~x~0 0)} is VALID [2022-04-28 03:06:54,825 INFO L290 TraceCheckUtils]: 6: Hoare triple {422#(= main_~x~0 0)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {423#(and (<= 1 main_~x~0) (<= main_~x~0 1))} is VALID [2022-04-28 03:06:54,825 INFO L290 TraceCheckUtils]: 7: Hoare triple {423#(and (<= 1 main_~x~0) (<= main_~x~0 1))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {424#(and (not (<= (+ (div main_~x~0 4294967296) 1) 0)) (<= main_~x~0 2))} is VALID [2022-04-28 03:06:54,826 INFO L290 TraceCheckUtils]: 8: Hoare triple {424#(and (not (<= (+ (div main_~x~0 4294967296) 1) 0)) (<= main_~x~0 2))} assume !(~x~0 % 4294967296 < 6); {418#false} is VALID [2022-04-28 03:06:54,826 INFO L272 TraceCheckUtils]: 9: Hoare triple {418#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {418#false} is VALID [2022-04-28 03:06:54,827 INFO L290 TraceCheckUtils]: 10: Hoare triple {418#false} ~cond := #in~cond; {418#false} is VALID [2022-04-28 03:06:54,827 INFO L290 TraceCheckUtils]: 11: Hoare triple {418#false} assume 0 == ~cond; {418#false} is VALID [2022-04-28 03:06:54,827 INFO L290 TraceCheckUtils]: 12: Hoare triple {418#false} assume !false; {418#false} is VALID [2022-04-28 03:06:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:54,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269910157] [2022-04-28 03:06:54,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269910157] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 03:06:54,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639258807] [2022-04-28 03:06:54,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-28 03:06:54,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:06:54,829 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 03:06:54,831 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 03:06:54,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-28 03:06:54,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 03:06:54,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-28 03:06:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:54,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 03:06:54,956 INFO L272 TraceCheckUtils]: 0: Hoare triple {417#true} call ULTIMATE.init(); {417#true} is VALID [2022-04-28 03:06:54,956 INFO L290 TraceCheckUtils]: 1: Hoare triple {417#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(18, 2);call #Ultimate.allocInit(12, 3); {417#true} is VALID [2022-04-28 03:06:54,957 INFO L290 TraceCheckUtils]: 2: Hoare triple {417#true} assume true; {417#true} is VALID [2022-04-28 03:06:54,957 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {417#true} {417#true} #34#return; {417#true} is VALID [2022-04-28 03:06:54,957 INFO L272 TraceCheckUtils]: 4: Hoare triple {417#true} call #t~ret5 := main(); {417#true} is VALID [2022-04-28 03:06:54,957 INFO L290 TraceCheckUtils]: 5: Hoare triple {417#true} ~x~0 := 0;~y~0 := 1; {444#(= main_~y~0 1)} is VALID [2022-04-28 03:06:54,958 INFO L290 TraceCheckUtils]: 6: Hoare triple {444#(= main_~y~0 1)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {448#(= main_~y~0 2)} is VALID [2022-04-28 03:06:54,959 INFO L290 TraceCheckUtils]: 7: Hoare triple {448#(= main_~y~0 2)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {452#(= main_~y~0 4)} is VALID [2022-04-28 03:06:54,959 INFO L290 TraceCheckUtils]: 8: Hoare triple {452#(= main_~y~0 4)} assume !(~x~0 % 4294967296 < 6); {452#(= main_~y~0 4)} is VALID [2022-04-28 03:06:54,960 INFO L272 TraceCheckUtils]: 9: Hoare triple {452#(= main_~y~0 4)} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {459#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:54,960 INFO L290 TraceCheckUtils]: 10: Hoare triple {459#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {463#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:54,961 INFO L290 TraceCheckUtils]: 11: Hoare triple {463#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {418#false} is VALID [2022-04-28 03:06:54,961 INFO L290 TraceCheckUtils]: 12: Hoare triple {418#false} assume !false; {418#false} is VALID [2022-04-28 03:06:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:54,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 03:06:55,110 INFO L290 TraceCheckUtils]: 12: Hoare triple {418#false} assume !false; {418#false} is VALID [2022-04-28 03:06:55,111 INFO L290 TraceCheckUtils]: 11: Hoare triple {463#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {418#false} is VALID [2022-04-28 03:06:55,112 INFO L290 TraceCheckUtils]: 10: Hoare triple {459#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {463#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:55,112 INFO L272 TraceCheckUtils]: 9: Hoare triple {479#(not (= 64 (mod main_~y~0 4294967296)))} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {459#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:55,113 INFO L290 TraceCheckUtils]: 8: Hoare triple {479#(not (= 64 (mod main_~y~0 4294967296)))} assume !(~x~0 % 4294967296 < 6); {479#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:55,114 INFO L290 TraceCheckUtils]: 7: Hoare triple {486#(not (= (mod (* main_~y~0 2) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {479#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:55,115 INFO L290 TraceCheckUtils]: 6: Hoare triple {490#(not (= (mod (* main_~y~0 4) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {486#(not (= (mod (* main_~y~0 2) 4294967296) 64))} is VALID [2022-04-28 03:06:55,118 INFO L290 TraceCheckUtils]: 5: Hoare triple {417#true} ~x~0 := 0;~y~0 := 1; {490#(not (= (mod (* main_~y~0 4) 4294967296) 64))} is VALID [2022-04-28 03:06:55,118 INFO L272 TraceCheckUtils]: 4: Hoare triple {417#true} call #t~ret5 := main(); {417#true} is VALID [2022-04-28 03:06:55,119 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {417#true} {417#true} #34#return; {417#true} is VALID [2022-04-28 03:06:55,119 INFO L290 TraceCheckUtils]: 2: Hoare triple {417#true} assume true; {417#true} is VALID [2022-04-28 03:06:55,119 INFO L290 TraceCheckUtils]: 1: Hoare triple {417#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(18, 2);call #Ultimate.allocInit(12, 3); {417#true} is VALID [2022-04-28 03:06:55,119 INFO L272 TraceCheckUtils]: 0: Hoare triple {417#true} call ULTIMATE.init(); {417#true} is VALID [2022-04-28 03:06:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:55,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639258807] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 03:06:55,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 03:06:55,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-04-28 03:06:55,120 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1097810797] [2022-04-28 03:06:55,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1097810797] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 03:06:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692912014] [2022-04-28 03:06:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 03:06:55,122 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:55,122 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,133 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 03:06:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 03:06:55,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-04-28 03:06:55,134 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:55,229 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-04-28 03:06:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 03:06:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-28 03:06:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:55,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2022-04-28 03:06:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2022-04-28 03:06:55,232 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 20 transitions. [2022-04-28 03:06:55,252 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:55,254 INFO L225 Difference]: With dead ends: 20 [2022-04-28 03:06:55,254 INFO L226 Difference]: Without dead ends: 15 [2022-04-28 03:06:55,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-04-28 03:06:55,256 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:55,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:06:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-04-28 03:06:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-04-28 03:06:55,266 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:55,266 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,266 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,267 INFO L87 Difference]: Start difference. First operand 15 states. Second operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:55,270 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 03:06:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 03:06:55,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:55,270 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:55,270 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-28 03:06:55,271 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 15 states. [2022-04-28 03:06:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:55,276 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-04-28 03:06:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 03:06:55,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:55,276 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:55,277 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:55,277 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-04-28 03:06:55,278 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-04-28 03:06:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:55,278 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-04-28 03:06:55,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:55,279 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 15 transitions. [2022-04-28 03:06:55,292 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-04-28 03:06:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 03:06:55,292 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:55,295 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:55,322 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 03:06:55,519 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,SelfDestructingSolverStorable3 [2022-04-28 03:06:55,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 5 times [2022-04-28 03:06:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:55,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [678818824] [2022-04-28 03:06:55,524 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 03:06:55,524 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 03:06:55,524 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 03:06:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1905189066, now seen corresponding path program 6 times [2022-04-28 03:06:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:55,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643396770] [2022-04-28 03:06:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:55,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:55,648 INFO L290 TraceCheckUtils]: 0: Hoare triple {626#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {617#true} is VALID [2022-04-28 03:06:55,648 INFO L290 TraceCheckUtils]: 1: Hoare triple {617#true} assume true; {617#true} is VALID [2022-04-28 03:06:55,649 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {617#true} {617#true} #34#return; {617#true} is VALID [2022-04-28 03:06:55,650 INFO L272 TraceCheckUtils]: 0: Hoare triple {617#true} call ULTIMATE.init(); {626#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:55,650 INFO L290 TraceCheckUtils]: 1: Hoare triple {626#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {617#true} is VALID [2022-04-28 03:06:55,651 INFO L290 TraceCheckUtils]: 2: Hoare triple {617#true} assume true; {617#true} is VALID [2022-04-28 03:06:55,651 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {617#true} {617#true} #34#return; {617#true} is VALID [2022-04-28 03:06:55,651 INFO L272 TraceCheckUtils]: 4: Hoare triple {617#true} call #t~ret5 := main(); {617#true} is VALID [2022-04-28 03:06:55,660 INFO L290 TraceCheckUtils]: 5: Hoare triple {617#true} ~x~0 := 0;~y~0 := 1; {622#(= main_~x~0 0)} is VALID [2022-04-28 03:06:55,661 INFO L290 TraceCheckUtils]: 6: Hoare triple {622#(= main_~x~0 0)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {623#(and (<= 1 main_~x~0) (<= main_~x~0 1))} is VALID [2022-04-28 03:06:55,661 INFO L290 TraceCheckUtils]: 7: Hoare triple {623#(and (<= 1 main_~x~0) (<= main_~x~0 1))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {624#(and (<= 2 main_~x~0) (<= main_~x~0 2))} is VALID [2022-04-28 03:06:55,662 INFO L290 TraceCheckUtils]: 8: Hoare triple {624#(and (<= 2 main_~x~0) (<= main_~x~0 2))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {625#(and (not (<= (+ (div main_~x~0 4294967296) 1) 0)) (<= main_~x~0 3))} is VALID [2022-04-28 03:06:55,663 INFO L290 TraceCheckUtils]: 9: Hoare triple {625#(and (not (<= (+ (div main_~x~0 4294967296) 1) 0)) (<= main_~x~0 3))} assume !(~x~0 % 4294967296 < 6); {618#false} is VALID [2022-04-28 03:06:55,663 INFO L272 TraceCheckUtils]: 10: Hoare triple {618#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {618#false} is VALID [2022-04-28 03:06:55,663 INFO L290 TraceCheckUtils]: 11: Hoare triple {618#false} ~cond := #in~cond; {618#false} is VALID [2022-04-28 03:06:55,663 INFO L290 TraceCheckUtils]: 12: Hoare triple {618#false} assume 0 == ~cond; {618#false} is VALID [2022-04-28 03:06:55,663 INFO L290 TraceCheckUtils]: 13: Hoare triple {618#false} assume !false; {618#false} is VALID [2022-04-28 03:06:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:55,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:55,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643396770] [2022-04-28 03:06:55,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643396770] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 03:06:55,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133748214] [2022-04-28 03:06:55,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-28 03:06:55,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:06:55,672 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 03:06:55,699 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 03:06:55,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-04-28 03:06:55,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 03:06:55,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 03:06:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:55,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 03:06:55,838 INFO L272 TraceCheckUtils]: 0: Hoare triple {617#true} call ULTIMATE.init(); {617#true} is VALID [2022-04-28 03:06:55,838 INFO L290 TraceCheckUtils]: 1: Hoare triple {617#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(18, 2);call #Ultimate.allocInit(12, 3); {617#true} is VALID [2022-04-28 03:06:55,839 INFO L290 TraceCheckUtils]: 2: Hoare triple {617#true} assume true; {617#true} is VALID [2022-04-28 03:06:55,839 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {617#true} {617#true} #34#return; {617#true} is VALID [2022-04-28 03:06:55,839 INFO L272 TraceCheckUtils]: 4: Hoare triple {617#true} call #t~ret5 := main(); {617#true} is VALID [2022-04-28 03:06:55,839 INFO L290 TraceCheckUtils]: 5: Hoare triple {617#true} ~x~0 := 0;~y~0 := 1; {645#(= main_~y~0 1)} is VALID [2022-04-28 03:06:55,840 INFO L290 TraceCheckUtils]: 6: Hoare triple {645#(= main_~y~0 1)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {649#(= main_~y~0 2)} is VALID [2022-04-28 03:06:55,840 INFO L290 TraceCheckUtils]: 7: Hoare triple {649#(= main_~y~0 2)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {653#(= main_~y~0 4)} is VALID [2022-04-28 03:06:55,841 INFO L290 TraceCheckUtils]: 8: Hoare triple {653#(= main_~y~0 4)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {657#(= main_~y~0 8)} is VALID [2022-04-28 03:06:55,841 INFO L290 TraceCheckUtils]: 9: Hoare triple {657#(= main_~y~0 8)} assume !(~x~0 % 4294967296 < 6); {657#(= main_~y~0 8)} is VALID [2022-04-28 03:06:55,842 INFO L272 TraceCheckUtils]: 10: Hoare triple {657#(= main_~y~0 8)} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {664#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:55,843 INFO L290 TraceCheckUtils]: 11: Hoare triple {664#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {668#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:55,843 INFO L290 TraceCheckUtils]: 12: Hoare triple {668#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {618#false} is VALID [2022-04-28 03:06:55,843 INFO L290 TraceCheckUtils]: 13: Hoare triple {618#false} assume !false; {618#false} is VALID [2022-04-28 03:06:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:55,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 03:06:56,000 INFO L290 TraceCheckUtils]: 13: Hoare triple {618#false} assume !false; {618#false} is VALID [2022-04-28 03:06:56,001 INFO L290 TraceCheckUtils]: 12: Hoare triple {668#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {618#false} is VALID [2022-04-28 03:06:56,001 INFO L290 TraceCheckUtils]: 11: Hoare triple {664#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {668#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:56,002 INFO L272 TraceCheckUtils]: 10: Hoare triple {684#(not (= 64 (mod main_~y~0 4294967296)))} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {664#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:56,003 INFO L290 TraceCheckUtils]: 9: Hoare triple {684#(not (= 64 (mod main_~y~0 4294967296)))} assume !(~x~0 % 4294967296 < 6); {684#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:56,004 INFO L290 TraceCheckUtils]: 8: Hoare triple {691#(not (= (mod (* main_~y~0 2) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {684#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:56,005 INFO L290 TraceCheckUtils]: 7: Hoare triple {695#(not (= (mod (* main_~y~0 4) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {691#(not (= (mod (* main_~y~0 2) 4294967296) 64))} is VALID [2022-04-28 03:06:56,007 INFO L290 TraceCheckUtils]: 6: Hoare triple {699#(not (= (mod (* main_~y~0 8) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {695#(not (= (mod (* main_~y~0 4) 4294967296) 64))} is VALID [2022-04-28 03:06:56,007 INFO L290 TraceCheckUtils]: 5: Hoare triple {617#true} ~x~0 := 0;~y~0 := 1; {699#(not (= (mod (* main_~y~0 8) 4294967296) 64))} is VALID [2022-04-28 03:06:56,008 INFO L272 TraceCheckUtils]: 4: Hoare triple {617#true} call #t~ret5 := main(); {617#true} is VALID [2022-04-28 03:06:56,008 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {617#true} {617#true} #34#return; {617#true} is VALID [2022-04-28 03:06:56,008 INFO L290 TraceCheckUtils]: 2: Hoare triple {617#true} assume true; {617#true} is VALID [2022-04-28 03:06:56,008 INFO L290 TraceCheckUtils]: 1: Hoare triple {617#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(18, 2);call #Ultimate.allocInit(12, 3); {617#true} is VALID [2022-04-28 03:06:56,008 INFO L272 TraceCheckUtils]: 0: Hoare triple {617#true} call ULTIMATE.init(); {617#true} is VALID [2022-04-28 03:06:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:56,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133748214] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 03:06:56,009 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 03:06:56,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2022-04-28 03:06:56,009 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [678818824] [2022-04-28 03:06:56,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [678818824] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:56,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:56,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 03:06:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384641633] [2022-04-28 03:06:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:56,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-28 03:06:56,011 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:56,011 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,021 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:56,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 03:06:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:56,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 03:06:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-04-28 03:06:56,022 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:56,169 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-04-28 03:06:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 03:06:56,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-28 03:06:56,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-04-28 03:06:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-04-28 03:06:56,173 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 21 transitions. [2022-04-28 03:06:56,194 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:56,199 INFO L225 Difference]: With dead ends: 21 [2022-04-28 03:06:56,199 INFO L226 Difference]: Without dead ends: 16 [2022-04-28 03:06:56,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-04-28 03:06:56,201 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:56,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:06:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-28 03:06:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-28 03:06:56,208 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:56,209 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,209 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,210 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:56,212 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-28 03:06:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-28 03:06:56,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:56,213 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:56,213 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 16 states. [2022-04-28 03:06:56,213 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 16 states. [2022-04-28 03:06:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:56,216 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-28 03:06:56,216 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-28 03:06:56,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:56,217 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:56,217 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:56,218 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-04-28 03:06:56,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2022-04-28 03:06:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:56,221 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-04-28 03:06:56,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,221 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 16 transitions. [2022-04-28 03:06:56,234 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-28 03:06:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-28 03:06:56,235 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:56,235 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:56,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 03:06:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:56,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:56,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 7 times [2022-04-28 03:06:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:56,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [450480120] [2022-04-28 03:06:56,440 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 03:06:56,441 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 03:06:56,441 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 03:06:56,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1105142364, now seen corresponding path program 8 times [2022-04-28 03:06:56,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:56,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608929526] [2022-04-28 03:06:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:56,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:56,581 INFO L290 TraceCheckUtils]: 0: Hoare triple {844#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {834#true} is VALID [2022-04-28 03:06:56,581 INFO L290 TraceCheckUtils]: 1: Hoare triple {834#true} assume true; {834#true} is VALID [2022-04-28 03:06:56,582 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {834#true} {834#true} #34#return; {834#true} is VALID [2022-04-28 03:06:56,582 INFO L272 TraceCheckUtils]: 0: Hoare triple {834#true} call ULTIMATE.init(); {844#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:56,582 INFO L290 TraceCheckUtils]: 1: Hoare triple {844#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {834#true} is VALID [2022-04-28 03:06:56,583 INFO L290 TraceCheckUtils]: 2: Hoare triple {834#true} assume true; {834#true} is VALID [2022-04-28 03:06:56,583 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {834#true} {834#true} #34#return; {834#true} is VALID [2022-04-28 03:06:56,583 INFO L272 TraceCheckUtils]: 4: Hoare triple {834#true} call #t~ret5 := main(); {834#true} is VALID [2022-04-28 03:06:56,583 INFO L290 TraceCheckUtils]: 5: Hoare triple {834#true} ~x~0 := 0;~y~0 := 1; {839#(= main_~x~0 0)} is VALID [2022-04-28 03:06:56,584 INFO L290 TraceCheckUtils]: 6: Hoare triple {839#(= main_~x~0 0)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {840#(and (<= 1 main_~x~0) (<= main_~x~0 1))} is VALID [2022-04-28 03:06:56,585 INFO L290 TraceCheckUtils]: 7: Hoare triple {840#(and (<= 1 main_~x~0) (<= main_~x~0 1))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {841#(and (<= 2 main_~x~0) (<= main_~x~0 2))} is VALID [2022-04-28 03:06:56,585 INFO L290 TraceCheckUtils]: 8: Hoare triple {841#(and (<= 2 main_~x~0) (<= main_~x~0 2))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {842#(and (<= main_~x~0 3) (<= 3 main_~x~0))} is VALID [2022-04-28 03:06:56,586 INFO L290 TraceCheckUtils]: 9: Hoare triple {842#(and (<= main_~x~0 3) (<= 3 main_~x~0))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {843#(and (<= main_~x~0 4) (not (<= (+ (div main_~x~0 4294967296) 1) 0)))} is VALID [2022-04-28 03:06:56,587 INFO L290 TraceCheckUtils]: 10: Hoare triple {843#(and (<= main_~x~0 4) (not (<= (+ (div main_~x~0 4294967296) 1) 0)))} assume !(~x~0 % 4294967296 < 6); {835#false} is VALID [2022-04-28 03:06:56,587 INFO L272 TraceCheckUtils]: 11: Hoare triple {835#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {835#false} is VALID [2022-04-28 03:06:56,587 INFO L290 TraceCheckUtils]: 12: Hoare triple {835#false} ~cond := #in~cond; {835#false} is VALID [2022-04-28 03:06:56,587 INFO L290 TraceCheckUtils]: 13: Hoare triple {835#false} assume 0 == ~cond; {835#false} is VALID [2022-04-28 03:06:56,587 INFO L290 TraceCheckUtils]: 14: Hoare triple {835#false} assume !false; {835#false} is VALID [2022-04-28 03:06:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:56,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:56,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608929526] [2022-04-28 03:06:56,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608929526] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 03:06:56,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471535594] [2022-04-28 03:06:56,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 03:06:56,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:56,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:06:56,589 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 03:06:56,604 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 03:06:56,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 03:06:56,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 03:06:56,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-28 03:06:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:56,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 03:06:56,755 INFO L272 TraceCheckUtils]: 0: Hoare triple {834#true} call ULTIMATE.init(); {834#true} is VALID [2022-04-28 03:06:56,755 INFO L290 TraceCheckUtils]: 1: Hoare triple {834#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(18, 2);call #Ultimate.allocInit(12, 3); {834#true} is VALID [2022-04-28 03:06:56,755 INFO L290 TraceCheckUtils]: 2: Hoare triple {834#true} assume true; {834#true} is VALID [2022-04-28 03:06:56,755 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {834#true} {834#true} #34#return; {834#true} is VALID [2022-04-28 03:06:56,756 INFO L272 TraceCheckUtils]: 4: Hoare triple {834#true} call #t~ret5 := main(); {834#true} is VALID [2022-04-28 03:06:56,757 INFO L290 TraceCheckUtils]: 5: Hoare triple {834#true} ~x~0 := 0;~y~0 := 1; {863#(= main_~y~0 1)} is VALID [2022-04-28 03:06:56,758 INFO L290 TraceCheckUtils]: 6: Hoare triple {863#(= main_~y~0 1)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {867#(= main_~y~0 2)} is VALID [2022-04-28 03:06:56,758 INFO L290 TraceCheckUtils]: 7: Hoare triple {867#(= main_~y~0 2)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {871#(= main_~y~0 4)} is VALID [2022-04-28 03:06:56,759 INFO L290 TraceCheckUtils]: 8: Hoare triple {871#(= main_~y~0 4)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {875#(= main_~y~0 8)} is VALID [2022-04-28 03:06:56,759 INFO L290 TraceCheckUtils]: 9: Hoare triple {875#(= main_~y~0 8)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {879#(= main_~y~0 16)} is VALID [2022-04-28 03:06:56,760 INFO L290 TraceCheckUtils]: 10: Hoare triple {879#(= main_~y~0 16)} assume !(~x~0 % 4294967296 < 6); {879#(= main_~y~0 16)} is VALID [2022-04-28 03:06:56,760 INFO L272 TraceCheckUtils]: 11: Hoare triple {879#(= main_~y~0 16)} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {886#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:56,761 INFO L290 TraceCheckUtils]: 12: Hoare triple {886#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {890#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:56,761 INFO L290 TraceCheckUtils]: 13: Hoare triple {890#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {835#false} is VALID [2022-04-28 03:06:56,761 INFO L290 TraceCheckUtils]: 14: Hoare triple {835#false} assume !false; {835#false} is VALID [2022-04-28 03:06:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:56,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 03:06:56,929 INFO L290 TraceCheckUtils]: 14: Hoare triple {835#false} assume !false; {835#false} is VALID [2022-04-28 03:06:56,930 INFO L290 TraceCheckUtils]: 13: Hoare triple {890#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {835#false} is VALID [2022-04-28 03:06:56,930 INFO L290 TraceCheckUtils]: 12: Hoare triple {886#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {890#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:56,931 INFO L272 TraceCheckUtils]: 11: Hoare triple {906#(not (= 64 (mod main_~y~0 4294967296)))} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {886#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:56,935 INFO L290 TraceCheckUtils]: 10: Hoare triple {906#(not (= 64 (mod main_~y~0 4294967296)))} assume !(~x~0 % 4294967296 < 6); {906#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:56,936 INFO L290 TraceCheckUtils]: 9: Hoare triple {913#(not (= (mod (* main_~y~0 2) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {906#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:56,938 INFO L290 TraceCheckUtils]: 8: Hoare triple {917#(not (= (mod (* main_~y~0 4) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {913#(not (= (mod (* main_~y~0 2) 4294967296) 64))} is VALID [2022-04-28 03:06:56,939 INFO L290 TraceCheckUtils]: 7: Hoare triple {921#(not (= (mod (* main_~y~0 8) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {917#(not (= (mod (* main_~y~0 4) 4294967296) 64))} is VALID [2022-04-28 03:06:56,940 INFO L290 TraceCheckUtils]: 6: Hoare triple {925#(not (= 64 (mod (* main_~y~0 16) 4294967296)))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {921#(not (= (mod (* main_~y~0 8) 4294967296) 64))} is VALID [2022-04-28 03:06:56,941 INFO L290 TraceCheckUtils]: 5: Hoare triple {834#true} ~x~0 := 0;~y~0 := 1; {925#(not (= 64 (mod (* main_~y~0 16) 4294967296)))} is VALID [2022-04-28 03:06:56,941 INFO L272 TraceCheckUtils]: 4: Hoare triple {834#true} call #t~ret5 := main(); {834#true} is VALID [2022-04-28 03:06:56,941 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {834#true} {834#true} #34#return; {834#true} is VALID [2022-04-28 03:06:56,941 INFO L290 TraceCheckUtils]: 2: Hoare triple {834#true} assume true; {834#true} is VALID [2022-04-28 03:06:56,941 INFO L290 TraceCheckUtils]: 1: Hoare triple {834#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(18, 2);call #Ultimate.allocInit(12, 3); {834#true} is VALID [2022-04-28 03:06:56,941 INFO L272 TraceCheckUtils]: 0: Hoare triple {834#true} call ULTIMATE.init(); {834#true} is VALID [2022-04-28 03:06:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:56,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471535594] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 03:06:56,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 03:06:56,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 20 [2022-04-28 03:06:56,942 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:56,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [450480120] [2022-04-28 03:06:56,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [450480120] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:56,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:56,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 03:06:56,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908645090] [2022-04-28 03:06:56,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:56,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-28 03:06:56,943 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:56,943 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:56,959 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:56,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-28 03:06:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:56,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-28 03:06:56,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-04-28 03:06:56,960 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:57,143 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-04-28 03:06:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 03:06:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-04-28 03:06:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2022-04-28 03:06:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2022-04-28 03:06:57,146 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 22 transitions. [2022-04-28 03:06:57,171 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:57,171 INFO L225 Difference]: With dead ends: 22 [2022-04-28 03:06:57,172 INFO L226 Difference]: Without dead ends: 17 [2022-04-28 03:06:57,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-04-28 03:06:57,173 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 03:06:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-28 03:06:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-28 03:06:57,183 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:57,183 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,183 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,183 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:57,185 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-04-28 03:06:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-28 03:06:57,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:57,186 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:57,187 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-28 03:06:57,187 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 17 states. [2022-04-28 03:06:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:57,188 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-04-28 03:06:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-28 03:06:57,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:57,190 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:57,190 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:57,190 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-04-28 03:06:57,191 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2022-04-28 03:06:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:57,191 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-04-28 03:06:57,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:57,191 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 17 transitions. [2022-04-28 03:06:57,208 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 03:06:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-04-28 03:06:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-04-28 03:06:57,212 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:57,212 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:57,241 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 03:06:57,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:57,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:57,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:57,429 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 9 times [2022-04-28 03:06:57,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:57,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1088238046] [2022-04-28 03:06:57,432 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 03:06:57,432 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 03:06:57,432 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 03:06:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash -63863818, now seen corresponding path program 10 times [2022-04-28 03:06:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:57,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105347231] [2022-04-28 03:06:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:57,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:06:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:57,565 INFO L290 TraceCheckUtils]: 0: Hoare triple {1079#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {1068#true} is VALID [2022-04-28 03:06:57,565 INFO L290 TraceCheckUtils]: 1: Hoare triple {1068#true} assume true; {1068#true} is VALID [2022-04-28 03:06:57,565 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {1068#true} {1068#true} #34#return; {1068#true} is VALID [2022-04-28 03:06:57,566 INFO L272 TraceCheckUtils]: 0: Hoare triple {1068#true} call ULTIMATE.init(); {1079#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:06:57,566 INFO L290 TraceCheckUtils]: 1: Hoare triple {1079#(and (= |#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(18, 2);call #Ultimate.allocInit(12, 3); {1068#true} is VALID [2022-04-28 03:06:57,566 INFO L290 TraceCheckUtils]: 2: Hoare triple {1068#true} assume true; {1068#true} is VALID [2022-04-28 03:06:57,566 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1068#true} {1068#true} #34#return; {1068#true} is VALID [2022-04-28 03:06:57,566 INFO L272 TraceCheckUtils]: 4: Hoare triple {1068#true} call #t~ret5 := main(); {1068#true} is VALID [2022-04-28 03:06:57,566 INFO L290 TraceCheckUtils]: 5: Hoare triple {1068#true} ~x~0 := 0;~y~0 := 1; {1073#(= main_~x~0 0)} is VALID [2022-04-28 03:06:57,567 INFO L290 TraceCheckUtils]: 6: Hoare triple {1073#(= main_~x~0 0)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1074#(and (<= 1 main_~x~0) (<= main_~x~0 1))} is VALID [2022-04-28 03:06:57,568 INFO L290 TraceCheckUtils]: 7: Hoare triple {1074#(and (<= 1 main_~x~0) (<= main_~x~0 1))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1075#(and (<= 2 main_~x~0) (<= main_~x~0 2))} is VALID [2022-04-28 03:06:57,568 INFO L290 TraceCheckUtils]: 8: Hoare triple {1075#(and (<= 2 main_~x~0) (<= main_~x~0 2))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1076#(and (<= main_~x~0 3) (<= 3 main_~x~0))} is VALID [2022-04-28 03:06:57,569 INFO L290 TraceCheckUtils]: 9: Hoare triple {1076#(and (<= main_~x~0 3) (<= 3 main_~x~0))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1077#(and (<= main_~x~0 4) (<= 4 main_~x~0))} is VALID [2022-04-28 03:06:57,570 INFO L290 TraceCheckUtils]: 10: Hoare triple {1077#(and (<= main_~x~0 4) (<= 4 main_~x~0))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1078#(and (not (<= (+ (div main_~x~0 4294967296) 1) 0)) (<= main_~x~0 5))} is VALID [2022-04-28 03:06:57,570 INFO L290 TraceCheckUtils]: 11: Hoare triple {1078#(and (not (<= (+ (div main_~x~0 4294967296) 1) 0)) (<= main_~x~0 5))} assume !(~x~0 % 4294967296 < 6); {1069#false} is VALID [2022-04-28 03:06:57,570 INFO L272 TraceCheckUtils]: 12: Hoare triple {1069#false} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {1069#false} is VALID [2022-04-28 03:06:57,570 INFO L290 TraceCheckUtils]: 13: Hoare triple {1069#false} ~cond := #in~cond; {1069#false} is VALID [2022-04-28 03:06:57,570 INFO L290 TraceCheckUtils]: 14: Hoare triple {1069#false} assume 0 == ~cond; {1069#false} is VALID [2022-04-28 03:06:57,571 INFO L290 TraceCheckUtils]: 15: Hoare triple {1069#false} assume !false; {1069#false} is VALID [2022-04-28 03:06:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:57,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:06:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105347231] [2022-04-28 03:06:57,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105347231] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-28 03:06:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778172531] [2022-04-28 03:06:57,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-28 03:06:57,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:06:57,576 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 03:06:57,585 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 03:06:57,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-28 03:06:57,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 03:06:57,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-28 03:06:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:06:57,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 03:06:57,754 INFO L272 TraceCheckUtils]: 0: Hoare triple {1068#true} call ULTIMATE.init(); {1068#true} is VALID [2022-04-28 03:06:57,754 INFO L290 TraceCheckUtils]: 1: Hoare triple {1068#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(18, 2);call #Ultimate.allocInit(12, 3); {1068#true} is VALID [2022-04-28 03:06:57,755 INFO L290 TraceCheckUtils]: 2: Hoare triple {1068#true} assume true; {1068#true} is VALID [2022-04-28 03:06:57,755 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1068#true} {1068#true} #34#return; {1068#true} is VALID [2022-04-28 03:06:57,755 INFO L272 TraceCheckUtils]: 4: Hoare triple {1068#true} call #t~ret5 := main(); {1068#true} is VALID [2022-04-28 03:06:57,755 INFO L290 TraceCheckUtils]: 5: Hoare triple {1068#true} ~x~0 := 0;~y~0 := 1; {1098#(= main_~y~0 1)} is VALID [2022-04-28 03:06:57,756 INFO L290 TraceCheckUtils]: 6: Hoare triple {1098#(= main_~y~0 1)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1102#(= main_~y~0 2)} is VALID [2022-04-28 03:06:57,756 INFO L290 TraceCheckUtils]: 7: Hoare triple {1102#(= main_~y~0 2)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1106#(= main_~y~0 4)} is VALID [2022-04-28 03:06:57,757 INFO L290 TraceCheckUtils]: 8: Hoare triple {1106#(= main_~y~0 4)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1110#(= main_~y~0 8)} is VALID [2022-04-28 03:06:57,758 INFO L290 TraceCheckUtils]: 9: Hoare triple {1110#(= main_~y~0 8)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1114#(= main_~y~0 16)} is VALID [2022-04-28 03:06:57,758 INFO L290 TraceCheckUtils]: 10: Hoare triple {1114#(= main_~y~0 16)} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1118#(= 32 main_~y~0)} is VALID [2022-04-28 03:06:57,758 INFO L290 TraceCheckUtils]: 11: Hoare triple {1118#(= 32 main_~y~0)} assume !(~x~0 % 4294967296 < 6); {1118#(= 32 main_~y~0)} is VALID [2022-04-28 03:06:57,759 INFO L272 TraceCheckUtils]: 12: Hoare triple {1118#(= 32 main_~y~0)} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {1125#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:57,760 INFO L290 TraceCheckUtils]: 13: Hoare triple {1125#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1129#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:57,760 INFO L290 TraceCheckUtils]: 14: Hoare triple {1129#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1069#false} is VALID [2022-04-28 03:06:57,760 INFO L290 TraceCheckUtils]: 15: Hoare triple {1069#false} assume !false; {1069#false} is VALID [2022-04-28 03:06:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:57,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 03:06:57,973 INFO L290 TraceCheckUtils]: 15: Hoare triple {1069#false} assume !false; {1069#false} is VALID [2022-04-28 03:06:57,974 INFO L290 TraceCheckUtils]: 14: Hoare triple {1129#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1069#false} is VALID [2022-04-28 03:06:57,974 INFO L290 TraceCheckUtils]: 13: Hoare triple {1125#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1129#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 03:06:57,980 INFO L272 TraceCheckUtils]: 12: Hoare triple {1145#(not (= 64 (mod main_~y~0 4294967296)))} call __VERIFIER_assert((if 64 != ~y~0 % 4294967296 then 1 else 0)); {1125#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 03:06:57,981 INFO L290 TraceCheckUtils]: 11: Hoare triple {1145#(not (= 64 (mod main_~y~0 4294967296)))} assume !(~x~0 % 4294967296 < 6); {1145#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:57,982 INFO L290 TraceCheckUtils]: 10: Hoare triple {1152#(not (= (mod (* main_~y~0 2) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1145#(not (= 64 (mod main_~y~0 4294967296)))} is VALID [2022-04-28 03:06:57,983 INFO L290 TraceCheckUtils]: 9: Hoare triple {1156#(not (= (mod (* main_~y~0 4) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1152#(not (= (mod (* main_~y~0 2) 4294967296) 64))} is VALID [2022-04-28 03:06:57,985 INFO L290 TraceCheckUtils]: 8: Hoare triple {1160#(not (= (mod (* main_~y~0 8) 4294967296) 64))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1156#(not (= (mod (* main_~y~0 4) 4294967296) 64))} is VALID [2022-04-28 03:06:57,986 INFO L290 TraceCheckUtils]: 7: Hoare triple {1164#(not (= 64 (mod (* main_~y~0 16) 4294967296)))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1160#(not (= (mod (* main_~y~0 8) 4294967296) 64))} is VALID [2022-04-28 03:06:57,987 INFO L290 TraceCheckUtils]: 6: Hoare triple {1168#(not (= 64 (mod (* 32 main_~y~0) 4294967296)))} assume !!(~x~0 % 4294967296 < 6);#t~post4 := ~x~0;~x~0 := 1 + #t~post4;havoc #t~post4;~y~0 := 2 * ~y~0; {1164#(not (= 64 (mod (* main_~y~0 16) 4294967296)))} is VALID [2022-04-28 03:06:57,988 INFO L290 TraceCheckUtils]: 5: Hoare triple {1068#true} ~x~0 := 0;~y~0 := 1; {1168#(not (= 64 (mod (* 32 main_~y~0) 4294967296)))} is VALID [2022-04-28 03:06:57,988 INFO L272 TraceCheckUtils]: 4: Hoare triple {1068#true} call #t~ret5 := main(); {1068#true} is VALID [2022-04-28 03:06:57,988 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1068#true} {1068#true} #34#return; {1068#true} is VALID [2022-04-28 03:06:57,988 INFO L290 TraceCheckUtils]: 2: Hoare triple {1068#true} assume true; {1068#true} is VALID [2022-04-28 03:06:57,988 INFO L290 TraceCheckUtils]: 1: Hoare triple {1068#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(18, 2);call #Ultimate.allocInit(12, 3); {1068#true} is VALID [2022-04-28 03:06:57,988 INFO L272 TraceCheckUtils]: 0: Hoare triple {1068#true} call ULTIMATE.init(); {1068#true} is VALID [2022-04-28 03:06:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:06:57,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778172531] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 03:06:57,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-28 03:06:57,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-04-28 03:06:57,989 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:06:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1088238046] [2022-04-28 03:06:57,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1088238046] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:06:57,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:06:57,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-28 03:06:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343184468] [2022-04-28 03:06:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:06:57,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 03:06:57,990 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:06:57,990 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,002 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:58,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-28 03:06:58,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-28 03:06:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-04-28 03:06:58,004 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:58,280 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-04-28 03:06:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-28 03:06:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-04-28 03:06:58,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:06:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2022-04-28 03:06:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2022-04-28 03:06:58,283 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 9 states and 23 transitions. [2022-04-28 03:06:58,305 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:06:58,306 INFO L225 Difference]: With dead ends: 23 [2022-04-28 03:06:58,306 INFO L226 Difference]: Without dead ends: 18 [2022-04-28 03:06:58,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2022-04-28 03:06:58,307 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 03:06:58,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 03:06:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-28 03:06:58,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-28 03:06:58,321 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:06:58,321 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,322 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,322 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:58,323 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-28 03:06:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-28 03:06:58,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:58,323 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:58,323 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-28 03:06:58,323 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-28 03:06:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:06:58,324 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-28 03:06:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-28 03:06:58,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:06:58,324 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:06:58,325 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:06:58,325 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:06:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-04-28 03:06:58,326 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2022-04-28 03:06:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:06:58,326 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-04-28 03:06:58,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:06:58,326 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 18 transitions. [2022-04-28 03:06:58,343 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 03:06:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-28 03:06:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 03:06:58,343 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:06:58,344 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:06:58,366 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 03:06:58,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 03:06:58,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:06:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:06:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 11 times [2022-04-28 03:06:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:06:58,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1693661171] [2022-04-28 03:06:58,559 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 03:06:58,559 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 03:06:58,560 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 03:06:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1943317092, now seen corresponding path program 12 times [2022-04-28 03:06:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:06:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57363319] [2022-04-28 03:06:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:06:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:06:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 03:06:58,600 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 03:06:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 03:06:58,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 03:06:58,634 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 03:06:58,634 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 03:06:58,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 03:06:58,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-28 03:06:58,641 INFO L356 BasicCegarLoop]: Path program histogram: [12, 2, 2] [2022-04-28 03:06:58,644 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 03:06:58,662 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 03:06:58,662 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: L6 has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 03:06:58,663 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: L6-2 has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 03:06:58,664 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 03:06:58,664 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 03:06:58,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:06:58 BoogieIcfgContainer [2022-04-28 03:06:58,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 03:06:58,669 INFO L158 Benchmark]: Toolchain (without parser) took 6094.76ms. Allocated memory was 191.9MB in the beginning and 235.9MB in the end (delta: 44.0MB). Free memory was 144.6MB in the beginning and 166.0MB in the end (delta: -21.4MB). Peak memory consumption was 22.9MB. Max. memory is 8.0GB. [2022-04-28 03:06:58,669 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 191.9MB. Free memory is still 161.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 03:06:58,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.50ms. Allocated memory is still 191.9MB. Free memory was 144.5MB in the beginning and 170.8MB in the end (delta: -26.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 03:06:58,670 INFO L158 Benchmark]: Boogie Preprocessor took 25.97ms. Allocated memory is still 191.9MB. Free memory was 170.8MB in the beginning and 169.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 03:06:58,670 INFO L158 Benchmark]: RCFGBuilder took 207.83ms. Allocated memory is still 191.9MB. Free memory was 169.5MB in the beginning and 159.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-28 03:06:58,670 INFO L158 Benchmark]: TraceAbstraction took 5663.37ms. Allocated memory was 191.9MB in the beginning and 235.9MB in the end (delta: 44.0MB). Free memory was 159.0MB in the beginning and 166.0MB in the end (delta: -7.0MB). Peak memory consumption was 38.1MB. Max. memory is 8.0GB. [2022-04-28 03:06:58,672 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 0.14ms. Allocated memory is still 191.9MB. Free memory is still 161.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.50ms. Allocated memory is still 191.9MB. Free memory was 144.5MB in the beginning and 170.8MB in the end (delta: -26.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.97ms. Allocated memory is still 191.9MB. Free memory was 170.8MB in the beginning and 169.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 207.83ms. Allocated memory is still 191.9MB. Free memory was 169.5MB in the beginning and 159.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 5663.37ms. Allocated memory was 191.9MB in the beginning and 235.9MB in the end (delta: 44.0MB). Free memory was 159.0MB in the beginning and 166.0MB in the end (delta: -7.0MB). Peak memory consumption was 38.1MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 [L16] COND FALSE !(x < 6) [L21] CALL __VERIFIER_assert(y != 64) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 83 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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 03:06:58,684 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...