/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/nla-digbench-scaling/divbin2_unwindbound5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 05:04:34,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 05:04:34,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 05:04:34,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 05:04:34,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 05:04:34,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 05:04:34,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 05:04:34,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 05:04:34,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 05:04:34,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 05:04:34,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 05:04:34,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 05:04:34,977 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 05:04:34,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 05:04:34,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 05:04:34,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 05:04:34,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 05:04:34,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 05:04:34,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 05:04:34,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 05:04:34,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 05:04:34,993 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 05:04:35,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 05:04:35,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 05:04:35,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 05:04:35,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 05:04:35,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 05:04:35,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 05:04:35,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 05:04:35,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 05:04:35,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 05:04:35,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 05:04:35,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 05:04:35,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 05:04:35,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 05:04:35,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 05:04:35,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 05:04:35,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 05:04:35,004 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 05:04:35,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 05:04:35,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 05:04:35,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 05:04:35,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 05:04:35,236 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 05:04:35,236 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 05:04:35,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound5.i [2022-04-28 05:04:35,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6ec9c2c/2aede822d0f545999937d17825bd3a05/FLAG5b5faa5f5 [2022-04-28 05:04:35,619 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 05:04:35,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound5.i [2022-04-28 05:04:35,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6ec9c2c/2aede822d0f545999937d17825bd3a05/FLAG5b5faa5f5 [2022-04-28 05:04:35,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6ec9c2c/2aede822d0f545999937d17825bd3a05 [2022-04-28 05:04:35,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 05:04:35,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 05:04:35,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 05:04:35,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 05:04:35,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 05:04:35,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709d3e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35, skipping insertion in model container [2022-04-28 05:04:35,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 05:04:35,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 05:04:35,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2022-04-28 05:04:35,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 05:04:35,780 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 05:04:35,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2022-04-28 05:04:35,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 05:04:35,804 INFO L208 MainTranslator]: Completed translation [2022-04-28 05:04:35,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35 WrapperNode [2022-04-28 05:04:35,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 05:04:35,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 05:04:35,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 05:04:35,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 05:04:35,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 05:04:35,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 05:04:35,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 05:04:35,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 05:04:35,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (1/1) ... [2022-04-28 05:04:35,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 05:04:35,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:35,854 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 05:04:35,856 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 05:04:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 05:04:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 05:04:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 05:04:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 05:04:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 05:04:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 05:04:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 05:04:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 05:04:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 05:04:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 05:04:35,950 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 05:04:35,952 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 05:04:36,050 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 05:04:36,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 05:04:36,055 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 05:04:36,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 05:04:36 BoogieIcfgContainer [2022-04-28 05:04:36,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 05:04:36,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 05:04:36,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 05:04:36,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 05:04:36,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 05:04:35" (1/3) ... [2022-04-28 05:04:36,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a17eaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 05:04:36, skipping insertion in model container [2022-04-28 05:04:36,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 05:04:35" (2/3) ... [2022-04-28 05:04:36,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a17eaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 05:04:36, skipping insertion in model container [2022-04-28 05:04:36,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 05:04:36" (3/3) ... [2022-04-28 05:04:36,076 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound5.i [2022-04-28 05:04:36,086 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 05:04:36,086 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 05:04:36,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 05:04:36,121 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@4d2f5519, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2cc7535a [2022-04-28 05:04:36,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 05:04:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 05:04:36,136 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:36,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:36,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2126508982, now seen corresponding path program 1 times [2022-04-28 05:04:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:36,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1922017231] [2022-04-28 05:04:36,176 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:04:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2126508982, now seen corresponding path program 2 times [2022-04-28 05:04:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:36,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203969691] [2022-04-28 05:04:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 05:04:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:36,359 INFO L290 TraceCheckUtils]: 0: Hoare triple {34#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);~counter~0 := 0; {29#true} is VALID [2022-04-28 05:04:36,359 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2022-04-28 05:04:36,359 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #82#return; {29#true} is VALID [2022-04-28 05:04:36,363 INFO L272 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {34#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 05:04:36,363 INFO L290 TraceCheckUtils]: 1: Hoare triple {34#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);~counter~0 := 0; {29#true} is VALID [2022-04-28 05:04:36,363 INFO L290 TraceCheckUtils]: 2: Hoare triple {29#true} assume true; {29#true} is VALID [2022-04-28 05:04:36,363 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29#true} {29#true} #82#return; {29#true} is VALID [2022-04-28 05:04:36,363 INFO L272 TraceCheckUtils]: 4: Hoare triple {29#true} call #t~ret4 := main(); {29#true} is VALID [2022-04-28 05:04:36,364 INFO L290 TraceCheckUtils]: 5: Hoare triple {29#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {29#true} is VALID [2022-04-28 05:04:36,365 INFO L290 TraceCheckUtils]: 6: Hoare triple {29#true} assume !true; {30#false} is VALID [2022-04-28 05:04:36,365 INFO L290 TraceCheckUtils]: 7: Hoare triple {30#false} assume !true; {30#false} is VALID [2022-04-28 05:04:36,365 INFO L272 TraceCheckUtils]: 8: Hoare triple {30#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {30#false} is VALID [2022-04-28 05:04:36,366 INFO L290 TraceCheckUtils]: 9: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2022-04-28 05:04:36,366 INFO L290 TraceCheckUtils]: 10: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2022-04-28 05:04:36,366 INFO L290 TraceCheckUtils]: 11: Hoare triple {30#false} assume !false; {30#false} is VALID [2022-04-28 05:04:36,367 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 05:04:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:36,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203969691] [2022-04-28 05:04:36,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203969691] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:36,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:36,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:04:36,370 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:36,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1922017231] [2022-04-28 05:04:36,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1922017231] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:36,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:36,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:04:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301464254] [2022-04-28 05:04:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:36,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,378 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:36,380 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,400 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 05:04:36,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 05:04:36,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 05:04:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 05:04:36,424 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:36,559 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-04-28 05:04:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 05:04:36,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:36,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-04-28 05:04:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-04-28 05:04:36,570 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 60 transitions. [2022-04-28 05:04:36,669 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:36,677 INFO L225 Difference]: With dead ends: 44 [2022-04-28 05:04:36,677 INFO L226 Difference]: Without dead ends: 22 [2022-04-28 05:04:36,681 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 05:04:36,683 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:36,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:36,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-28 05:04:36,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-04-28 05:04:36,706 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:36,709 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:36,710 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:36,710 INFO L87 Difference]: Start difference. First operand 22 states. Second operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:36,720 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-04-28 05:04:36,720 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-04-28 05:04:36,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:36,720 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:36,721 INFO L74 IsIncluded]: Start isIncluded. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 22 states. [2022-04-28 05:04:36,721 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 22 states. [2022-04-28 05:04:36,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:36,723 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-04-28 05:04:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-04-28 05:04:36,724 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:36,724 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:36,724 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:36,724 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-04-28 05:04:36,726 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2022-04-28 05:04:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:36,727 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-04-28 05:04:36,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 05:04:36,727 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 21 states and 26 transitions. [2022-04-28 05:04:36,764 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-04-28 05:04:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 05:04:36,765 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:36,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:36,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 05:04:36,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:36,766 INFO L85 PathProgramCache]: Analyzing trace with hash 941422680, now seen corresponding path program 1 times [2022-04-28 05:04:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:36,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [777575188] [2022-04-28 05:04:36,767 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:04:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 941422680, now seen corresponding path program 2 times [2022-04-28 05:04:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:36,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18320883] [2022-04-28 05:04:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 05:04:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:36,893 INFO L290 TraceCheckUtils]: 0: Hoare triple {218#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);~counter~0 := 0; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,893 INFO L290 TraceCheckUtils]: 1: Hoare triple {216#(<= ~counter~0 0)} assume true; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,894 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {216#(<= ~counter~0 0)} {211#true} #82#return; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,894 INFO L272 TraceCheckUtils]: 0: Hoare triple {211#true} call ULTIMATE.init(); {218#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 05:04:36,895 INFO L290 TraceCheckUtils]: 1: Hoare triple {218#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);~counter~0 := 0; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,895 INFO L290 TraceCheckUtils]: 2: Hoare triple {216#(<= ~counter~0 0)} assume true; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,896 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {216#(<= ~counter~0 0)} {211#true} #82#return; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,896 INFO L272 TraceCheckUtils]: 4: Hoare triple {216#(<= ~counter~0 0)} call #t~ret4 := main(); {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,897 INFO L290 TraceCheckUtils]: 5: Hoare triple {216#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {216#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:36,897 INFO L290 TraceCheckUtils]: 6: Hoare triple {216#(<= ~counter~0 0)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {217#(<= |main_#t~post2| 0)} is VALID [2022-04-28 05:04:36,898 INFO L290 TraceCheckUtils]: 7: Hoare triple {217#(<= |main_#t~post2| 0)} assume !(#t~post2 < 5);havoc #t~post2; {212#false} is VALID [2022-04-28 05:04:36,898 INFO L290 TraceCheckUtils]: 8: Hoare triple {212#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {212#false} is VALID [2022-04-28 05:04:36,898 INFO L290 TraceCheckUtils]: 9: Hoare triple {212#false} assume !(#t~post3 < 5);havoc #t~post3; {212#false} is VALID [2022-04-28 05:04:36,898 INFO L272 TraceCheckUtils]: 10: Hoare triple {212#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {212#false} is VALID [2022-04-28 05:04:36,899 INFO L290 TraceCheckUtils]: 11: Hoare triple {212#false} ~cond := #in~cond; {212#false} is VALID [2022-04-28 05:04:36,899 INFO L290 TraceCheckUtils]: 12: Hoare triple {212#false} assume 0 == ~cond; {212#false} is VALID [2022-04-28 05:04:36,899 INFO L290 TraceCheckUtils]: 13: Hoare triple {212#false} assume !false; {212#false} is VALID [2022-04-28 05:04:36,899 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 05:04:36,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:36,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18320883] [2022-04-28 05:04:36,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18320883] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:36,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:36,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 05:04:36,900 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [777575188] [2022-04-28 05:04:36,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [777575188] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:36,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:36,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 05:04:36,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165402086] [2022-04-28 05:04:36,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:36,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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) Word has length 14 [2022-04-28 05:04:36,902 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:36,902 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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 05:04:36,912 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 05:04:36,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 05:04:36,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:36,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 05:04:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 05:04:36,915 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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 05:04:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:37,034 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-04-28 05:04:37,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 05:04:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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) Word has length 14 [2022-04-28 05:04:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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 05:04:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-04-28 05:04:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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 05:04:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-04-28 05:04:37,050 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 44 transitions. [2022-04-28 05:04:37,088 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:37,089 INFO L225 Difference]: With dead ends: 35 [2022-04-28 05:04:37,089 INFO L226 Difference]: Without dead ends: 23 [2022-04-28 05:04:37,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 05:04:37,090 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:37,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:37,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-28 05:04:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-28 05:04:37,097 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:37,098 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,098 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,098 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:37,099 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-04-28 05:04:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-04-28 05:04:37,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:37,100 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:37,100 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 23 states. [2022-04-28 05:04:37,100 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 23 states. [2022-04-28 05:04:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:37,101 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-04-28 05:04:37,101 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-04-28 05:04:37,102 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:37,102 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:37,102 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:37,102 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-04-28 05:04:37,103 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 14 [2022-04-28 05:04:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:37,103 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-04-28 05:04:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 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 05:04:37,104 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 28 transitions. [2022-04-28 05:04:37,125 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-04-28 05:04:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-28 05:04:37,125 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:37,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:37,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 05:04:37,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:37,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:37,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1209133518, now seen corresponding path program 1 times [2022-04-28 05:04:37,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:37,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [372249046] [2022-04-28 05:04:37,127 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:04:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1209133518, now seen corresponding path program 2 times [2022-04-28 05:04:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:37,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794508977] [2022-04-28 05:04:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:37,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:37,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663959497] [2022-04-28 05:04:37,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:37,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:37,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:37,142 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 05:04:37,149 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 05:04:37,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 05:04:37,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:37,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 05:04:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:37,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:37,352 INFO L272 TraceCheckUtils]: 0: Hoare triple {385#true} call ULTIMATE.init(); {385#true} is VALID [2022-04-28 05:04:37,353 INFO L290 TraceCheckUtils]: 1: Hoare triple {385#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(10, 2);~counter~0 := 0; {393#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:37,354 INFO L290 TraceCheckUtils]: 2: Hoare triple {393#(<= ~counter~0 0)} assume true; {393#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:37,354 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {393#(<= ~counter~0 0)} {385#true} #82#return; {393#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:37,355 INFO L272 TraceCheckUtils]: 4: Hoare triple {393#(<= ~counter~0 0)} call #t~ret4 := main(); {393#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:37,355 INFO L290 TraceCheckUtils]: 5: Hoare triple {393#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {393#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:37,356 INFO L290 TraceCheckUtils]: 6: Hoare triple {393#(<= ~counter~0 0)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {409#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:37,356 INFO L290 TraceCheckUtils]: 7: Hoare triple {409#(<= ~counter~0 1)} assume !!(#t~post2 < 5);havoc #t~post2; {409#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:37,356 INFO L290 TraceCheckUtils]: 8: Hoare triple {409#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {409#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:37,357 INFO L290 TraceCheckUtils]: 9: Hoare triple {409#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {419#(<= |main_#t~post3| 1)} is VALID [2022-04-28 05:04:37,358 INFO L290 TraceCheckUtils]: 10: Hoare triple {419#(<= |main_#t~post3| 1)} assume !(#t~post3 < 5);havoc #t~post3; {386#false} is VALID [2022-04-28 05:04:37,358 INFO L272 TraceCheckUtils]: 11: Hoare triple {386#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {386#false} is VALID [2022-04-28 05:04:37,358 INFO L290 TraceCheckUtils]: 12: Hoare triple {386#false} ~cond := #in~cond; {386#false} is VALID [2022-04-28 05:04:37,358 INFO L290 TraceCheckUtils]: 13: Hoare triple {386#false} assume 0 == ~cond; {386#false} is VALID [2022-04-28 05:04:37,358 INFO L290 TraceCheckUtils]: 14: Hoare triple {386#false} assume !false; {386#false} is VALID [2022-04-28 05:04:37,358 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 05:04:37,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:04:37,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:37,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794508977] [2022-04-28 05:04:37,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:37,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663959497] [2022-04-28 05:04:37,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663959497] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:37,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:37,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:04:37,360 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:37,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [372249046] [2022-04-28 05:04:37,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [372249046] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:37,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:37,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:04:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413850373] [2022-04-28 05:04:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:37,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) Word has length 15 [2022-04-28 05:04:37,361 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:37,361 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 05:04:37,379 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 05:04:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 05:04:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 05:04:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 05:04:37,381 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 05:04:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:37,468 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-04-28 05:04:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 05:04:37,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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) Word has length 15 [2022-04-28 05:04:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 05:04:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-28 05:04:37,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 05:04:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-04-28 05:04:37,475 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 40 transitions. [2022-04-28 05:04:37,518 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:37,519 INFO L225 Difference]: With dead ends: 34 [2022-04-28 05:04:37,520 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 05:04:37,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 05:04:37,523 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:37,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 05:04:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-04-28 05:04:37,537 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:37,537 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,538 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,538 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:37,540 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2022-04-28 05:04:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-04-28 05:04:37,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:37,541 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:37,541 INFO L74 IsIncluded]: Start isIncluded. First operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 27 states. [2022-04-28 05:04:37,542 INFO L87 Difference]: Start difference. First operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 27 states. [2022-04-28 05:04:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:37,548 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2022-04-28 05:04:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-04-28 05:04:37,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:37,549 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:37,549 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:37,549 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:37,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-04-28 05:04:37,551 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2022-04-28 05:04:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:37,551 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-04-28 05:04:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 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 05:04:37,551 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 26 states and 32 transitions. [2022-04-28 05:04:37,583 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 05:04:37,583 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-04-28 05:04:37,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-28 05:04:37,586 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:37,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:37,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 05:04:37,795 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 05:04:37,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1207346058, now seen corresponding path program 1 times [2022-04-28 05:04:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1546460836] [2022-04-28 05:04:37,797 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 05:04:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1207346058, now seen corresponding path program 2 times [2022-04-28 05:04:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:37,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619484683] [2022-04-28 05:04:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:37,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:37,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899244803] [2022-04-28 05:04:37,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:37,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:37,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:37,823 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 05:04:37,824 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 05:04:37,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 05:04:37,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:37,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-28 05:04:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:37,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:38,113 INFO L272 TraceCheckUtils]: 0: Hoare triple {608#true} call ULTIMATE.init(); {608#true} is VALID [2022-04-28 05:04:38,114 INFO L290 TraceCheckUtils]: 1: Hoare triple {608#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(10, 2);~counter~0 := 0; {608#true} is VALID [2022-04-28 05:04:38,114 INFO L290 TraceCheckUtils]: 2: Hoare triple {608#true} assume true; {608#true} is VALID [2022-04-28 05:04:38,114 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {608#true} {608#true} #82#return; {608#true} is VALID [2022-04-28 05:04:38,114 INFO L272 TraceCheckUtils]: 4: Hoare triple {608#true} call #t~ret4 := main(); {608#true} is VALID [2022-04-28 05:04:38,118 INFO L290 TraceCheckUtils]: 5: Hoare triple {608#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {628#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,119 INFO L290 TraceCheckUtils]: 6: Hoare triple {628#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {628#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,120 INFO L290 TraceCheckUtils]: 7: Hoare triple {628#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post2 < 5);havoc #t~post2; {628#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,120 INFO L290 TraceCheckUtils]: 8: Hoare triple {628#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {638#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,121 INFO L290 TraceCheckUtils]: 9: Hoare triple {638#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {638#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,121 INFO L290 TraceCheckUtils]: 10: Hoare triple {638#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post3 < 5);havoc #t~post3; {638#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,122 INFO L272 TraceCheckUtils]: 11: Hoare triple {638#(and (= main_~b~0 1) (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {648#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 05:04:38,122 INFO L290 TraceCheckUtils]: 12: Hoare triple {648#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {652#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 05:04:38,123 INFO L290 TraceCheckUtils]: 13: Hoare triple {652#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {609#false} is VALID [2022-04-28 05:04:38,123 INFO L290 TraceCheckUtils]: 14: Hoare triple {609#false} assume !false; {609#false} is VALID [2022-04-28 05:04:38,123 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 05:04:38,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:04:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:38,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619484683] [2022-04-28 05:04:38,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899244803] [2022-04-28 05:04:38,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899244803] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:38,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:38,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 05:04:38,124 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1546460836] [2022-04-28 05:04:38,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1546460836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:38,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:38,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 05:04:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488789128] [2022-04-28 05:04:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:38,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 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 05:04:38,125 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:38,125 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states 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 05:04:38,136 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 05:04:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 05:04:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 05:04:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-28 05:04:38,138 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states 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 05:04:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:38,303 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-04-28 05:04:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 05:04:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 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 05:04:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states 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 05:04:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2022-04-28 05:04:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states 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 05:04:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 42 transitions. [2022-04-28 05:04:38,306 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 42 transitions. [2022-04-28 05:04:38,331 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:38,332 INFO L225 Difference]: With dead ends: 35 [2022-04-28 05:04:38,332 INFO L226 Difference]: Without dead ends: 32 [2022-04-28 05:04:38,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-28 05:04:38,333 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:38,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 05:04:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-28 05:04:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-28 05:04:38,347 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:38,347 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,347 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,348 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:38,349 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-04-28 05:04:38,349 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 05:04:38,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:38,349 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:38,349 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 32 states. [2022-04-28 05:04:38,349 INFO L87 Difference]: Start difference. First operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 32 states. [2022-04-28 05:04:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:38,350 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-04-28 05:04:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 05:04:38,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:38,351 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:38,351 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:38,351 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-04-28 05:04:38,352 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 15 [2022-04-28 05:04:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:38,352 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-04-28 05:04:38,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states 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 05:04:38,352 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 38 transitions. [2022-04-28 05:04:38,377 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 05:04:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 05:04:38,377 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:38,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:38,404 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 05:04:38,578 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 05:04:38,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -352921097, now seen corresponding path program 1 times [2022-04-28 05:04:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:38,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1361583234] [2022-04-28 05:04:38,597 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 05:04:38,597 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 05:04:38,597 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 05:04:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash -352921097, now seen corresponding path program 2 times [2022-04-28 05:04:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:38,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368232692] [2022-04-28 05:04:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:38,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:38,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180915026] [2022-04-28 05:04:38,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:38,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:38,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:38,611 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 05:04:38,612 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 05:04:38,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 05:04:38,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:38,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 05:04:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:38,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:38,755 INFO L272 TraceCheckUtils]: 0: Hoare triple {858#true} call ULTIMATE.init(); {858#true} is VALID [2022-04-28 05:04:38,755 INFO L290 TraceCheckUtils]: 1: Hoare triple {858#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(10, 2);~counter~0 := 0; {858#true} is VALID [2022-04-28 05:04:38,755 INFO L290 TraceCheckUtils]: 2: Hoare triple {858#true} assume true; {858#true} is VALID [2022-04-28 05:04:38,755 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {858#true} {858#true} #82#return; {858#true} is VALID [2022-04-28 05:04:38,755 INFO L272 TraceCheckUtils]: 4: Hoare triple {858#true} call #t~ret4 := main(); {858#true} is VALID [2022-04-28 05:04:38,756 INFO L290 TraceCheckUtils]: 5: Hoare triple {858#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,756 INFO L290 TraceCheckUtils]: 6: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,757 INFO L290 TraceCheckUtils]: 7: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post2 < 5);havoc #t~post2; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,757 INFO L290 TraceCheckUtils]: 8: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,757 INFO L290 TraceCheckUtils]: 9: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,758 INFO L290 TraceCheckUtils]: 10: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(#t~post2 < 5);havoc #t~post2; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,758 INFO L290 TraceCheckUtils]: 11: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,759 INFO L290 TraceCheckUtils]: 12: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(#t~post3 < 5);havoc #t~post3; {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 05:04:38,760 INFO L272 TraceCheckUtils]: 13: Hoare triple {878#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {903#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 05:04:38,760 INFO L290 TraceCheckUtils]: 14: Hoare triple {903#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {907#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 05:04:38,761 INFO L290 TraceCheckUtils]: 15: Hoare triple {907#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {859#false} is VALID [2022-04-28 05:04:38,761 INFO L290 TraceCheckUtils]: 16: Hoare triple {859#false} assume !false; {859#false} is VALID [2022-04-28 05:04:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 05:04:38,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:04:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:38,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368232692] [2022-04-28 05:04:38,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:38,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180915026] [2022-04-28 05:04:38,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180915026] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:38,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:38,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:04:38,764 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:38,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1361583234] [2022-04-28 05:04:38,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1361583234] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:38,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:38,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:04:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963242257] [2022-04-28 05:04:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 05:04:38,769 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:38,769 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states 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 05:04:38,779 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 05:04:38,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 05:04:38,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 05:04:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 05:04:38,780 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states 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 05:04:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:38,896 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-04-28 05:04:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 05:04:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-28 05:04:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states 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 05:04:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 05:04:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states 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 05:04:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 05:04:38,898 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-28 05:04:38,927 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:38,928 INFO L225 Difference]: With dead ends: 44 [2022-04-28 05:04:38,928 INFO L226 Difference]: Without dead ends: 41 [2022-04-28 05:04:38,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 05:04:38,929 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:38,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 66 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-28 05:04:38,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2022-04-28 05:04:38,945 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:38,945 INFO L82 GeneralOperation]: Start isEquivalent. First operand 41 states. Second operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,945 INFO L74 IsIncluded]: Start isIncluded. First operand 41 states. Second operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,945 INFO L87 Difference]: Start difference. First operand 41 states. Second operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:38,948 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-28 05:04:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-04-28 05:04:38,948 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:38,948 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:38,948 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 41 states. [2022-04-28 05:04:38,948 INFO L87 Difference]: Start difference. First operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 41 states. [2022-04-28 05:04:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:38,949 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-28 05:04:38,949 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-04-28 05:04:38,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:38,950 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:38,950 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:38,950 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-04-28 05:04:38,951 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2022-04-28 05:04:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:38,951 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-04-28 05:04:38,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states 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 05:04:38,951 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 38 transitions. [2022-04-28 05:04:38,995 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 05:04:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-28 05:04:38,995 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:38,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:39,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-28 05:04:39,196 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 05:04:39,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:39,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1626008211, now seen corresponding path program 1 times [2022-04-28 05:04:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:39,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [824392278] [2022-04-28 05:04:39,197 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 05:04:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1626008211, now seen corresponding path program 2 times [2022-04-28 05:04:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:39,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668325184] [2022-04-28 05:04:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:39,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:39,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:39,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666348189] [2022-04-28 05:04:39,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:39,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:39,209 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 05:04:39,210 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 05:04:39,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:04:39,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:39,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-28 05:04:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:39,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:39,380 INFO L272 TraceCheckUtils]: 0: Hoare triple {1149#true} call ULTIMATE.init(); {1149#true} is VALID [2022-04-28 05:04:39,381 INFO L290 TraceCheckUtils]: 1: Hoare triple {1149#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(10, 2);~counter~0 := 0; {1157#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:39,381 INFO L290 TraceCheckUtils]: 2: Hoare triple {1157#(<= ~counter~0 0)} assume true; {1157#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:39,382 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1157#(<= ~counter~0 0)} {1149#true} #82#return; {1157#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:39,382 INFO L272 TraceCheckUtils]: 4: Hoare triple {1157#(<= ~counter~0 0)} call #t~ret4 := main(); {1157#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:39,383 INFO L290 TraceCheckUtils]: 5: Hoare triple {1157#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1157#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:39,383 INFO L290 TraceCheckUtils]: 6: Hoare triple {1157#(<= ~counter~0 0)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {1173#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:39,383 INFO L290 TraceCheckUtils]: 7: Hoare triple {1173#(<= ~counter~0 1)} assume !!(#t~post2 < 5);havoc #t~post2; {1173#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:39,384 INFO L290 TraceCheckUtils]: 8: Hoare triple {1173#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1173#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:39,384 INFO L290 TraceCheckUtils]: 9: Hoare triple {1173#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,385 INFO L290 TraceCheckUtils]: 10: Hoare triple {1183#(<= ~counter~0 2)} assume !!(#t~post3 < 5);havoc #t~post3; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,385 INFO L272 TraceCheckUtils]: 11: Hoare triple {1183#(<= ~counter~0 2)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,385 INFO L290 TraceCheckUtils]: 12: Hoare triple {1183#(<= ~counter~0 2)} ~cond := #in~cond; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,386 INFO L290 TraceCheckUtils]: 13: Hoare triple {1183#(<= ~counter~0 2)} assume !(0 == ~cond); {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,386 INFO L290 TraceCheckUtils]: 14: Hoare triple {1183#(<= ~counter~0 2)} assume true; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,387 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1183#(<= ~counter~0 2)} {1183#(<= ~counter~0 2)} #78#return; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,387 INFO L290 TraceCheckUtils]: 16: Hoare triple {1183#(<= ~counter~0 2)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,387 INFO L290 TraceCheckUtils]: 17: Hoare triple {1183#(<= ~counter~0 2)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,388 INFO L290 TraceCheckUtils]: 18: Hoare triple {1183#(<= ~counter~0 2)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1211#(<= |main_#t~post3| 2)} is VALID [2022-04-28 05:04:39,388 INFO L290 TraceCheckUtils]: 19: Hoare triple {1211#(<= |main_#t~post3| 2)} assume !(#t~post3 < 5);havoc #t~post3; {1150#false} is VALID [2022-04-28 05:04:39,388 INFO L272 TraceCheckUtils]: 20: Hoare triple {1150#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1150#false} is VALID [2022-04-28 05:04:39,389 INFO L290 TraceCheckUtils]: 21: Hoare triple {1150#false} ~cond := #in~cond; {1150#false} is VALID [2022-04-28 05:04:39,389 INFO L290 TraceCheckUtils]: 22: Hoare triple {1150#false} assume 0 == ~cond; {1150#false} is VALID [2022-04-28 05:04:39,389 INFO L290 TraceCheckUtils]: 23: Hoare triple {1150#false} assume !false; {1150#false} is VALID [2022-04-28 05:04:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 05:04:39,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 05:04:39,528 INFO L290 TraceCheckUtils]: 23: Hoare triple {1150#false} assume !false; {1150#false} is VALID [2022-04-28 05:04:39,528 INFO L290 TraceCheckUtils]: 22: Hoare triple {1150#false} assume 0 == ~cond; {1150#false} is VALID [2022-04-28 05:04:39,528 INFO L290 TraceCheckUtils]: 21: Hoare triple {1150#false} ~cond := #in~cond; {1150#false} is VALID [2022-04-28 05:04:39,528 INFO L272 TraceCheckUtils]: 20: Hoare triple {1150#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1150#false} is VALID [2022-04-28 05:04:39,528 INFO L290 TraceCheckUtils]: 19: Hoare triple {1239#(< |main_#t~post3| 5)} assume !(#t~post3 < 5);havoc #t~post3; {1150#false} is VALID [2022-04-28 05:04:39,529 INFO L290 TraceCheckUtils]: 18: Hoare triple {1243#(< ~counter~0 5)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1239#(< |main_#t~post3| 5)} is VALID [2022-04-28 05:04:39,529 INFO L290 TraceCheckUtils]: 17: Hoare triple {1243#(< ~counter~0 5)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1243#(< ~counter~0 5)} is VALID [2022-04-28 05:04:39,529 INFO L290 TraceCheckUtils]: 16: Hoare triple {1243#(< ~counter~0 5)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1243#(< ~counter~0 5)} is VALID [2022-04-28 05:04:39,531 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1149#true} {1243#(< ~counter~0 5)} #78#return; {1243#(< ~counter~0 5)} is VALID [2022-04-28 05:04:39,531 INFO L290 TraceCheckUtils]: 14: Hoare triple {1149#true} assume true; {1149#true} is VALID [2022-04-28 05:04:39,531 INFO L290 TraceCheckUtils]: 13: Hoare triple {1149#true} assume !(0 == ~cond); {1149#true} is VALID [2022-04-28 05:04:39,532 INFO L290 TraceCheckUtils]: 12: Hoare triple {1149#true} ~cond := #in~cond; {1149#true} is VALID [2022-04-28 05:04:39,533 INFO L272 TraceCheckUtils]: 11: Hoare triple {1243#(< ~counter~0 5)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1149#true} is VALID [2022-04-28 05:04:39,547 INFO L290 TraceCheckUtils]: 10: Hoare triple {1243#(< ~counter~0 5)} assume !!(#t~post3 < 5);havoc #t~post3; {1243#(< ~counter~0 5)} is VALID [2022-04-28 05:04:39,548 INFO L290 TraceCheckUtils]: 9: Hoare triple {1271#(< ~counter~0 4)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1243#(< ~counter~0 5)} is VALID [2022-04-28 05:04:39,548 INFO L290 TraceCheckUtils]: 8: Hoare triple {1271#(< ~counter~0 4)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1271#(< ~counter~0 4)} is VALID [2022-04-28 05:04:39,549 INFO L290 TraceCheckUtils]: 7: Hoare triple {1271#(< ~counter~0 4)} assume !!(#t~post2 < 5);havoc #t~post2; {1271#(< ~counter~0 4)} is VALID [2022-04-28 05:04:39,549 INFO L290 TraceCheckUtils]: 6: Hoare triple {1183#(<= ~counter~0 2)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {1271#(< ~counter~0 4)} is VALID [2022-04-28 05:04:39,549 INFO L290 TraceCheckUtils]: 5: Hoare triple {1183#(<= ~counter~0 2)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,550 INFO L272 TraceCheckUtils]: 4: Hoare triple {1183#(<= ~counter~0 2)} call #t~ret4 := main(); {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,550 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1183#(<= ~counter~0 2)} {1149#true} #82#return; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,550 INFO L290 TraceCheckUtils]: 2: Hoare triple {1183#(<= ~counter~0 2)} assume true; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,550 INFO L290 TraceCheckUtils]: 1: Hoare triple {1149#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(10, 2);~counter~0 := 0; {1183#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:39,551 INFO L272 TraceCheckUtils]: 0: Hoare triple {1149#true} call ULTIMATE.init(); {1149#true} is VALID [2022-04-28 05:04:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 05:04:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668325184] [2022-04-28 05:04:39,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666348189] [2022-04-28 05:04:39,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666348189] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 05:04:39,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 05:04:39,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-04-28 05:04:39,551 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:39,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [824392278] [2022-04-28 05:04:39,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [824392278] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:39,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:39,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 05:04:39,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584079223] [2022-04-28 05:04:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:39,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-04-28 05:04:39,552 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:39,552 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:39,565 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:39,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 05:04:39,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:39,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 05:04:39,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-28 05:04:39,566 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:39,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:39,666 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2022-04-28 05:04:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 05:04:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-04-28 05:04:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 55 transitions. [2022-04-28 05:04:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 55 transitions. [2022-04-28 05:04:39,668 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 55 transitions. [2022-04-28 05:04:39,697 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:39,698 INFO L225 Difference]: With dead ends: 57 [2022-04-28 05:04:39,698 INFO L226 Difference]: Without dead ends: 50 [2022-04-28 05:04:39,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-28 05:04:39,699 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:39,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 85 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-28 05:04:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-04-28 05:04:39,726 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:39,726 INFO L82 GeneralOperation]: Start isEquivalent. First operand 50 states. Second operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 34 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:39,726 INFO L74 IsIncluded]: Start isIncluded. First operand 50 states. Second operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 34 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:39,726 INFO L87 Difference]: Start difference. First operand 50 states. Second operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 34 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:39,728 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-04-28 05:04:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-04-28 05:04:39,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:39,728 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:39,728 INFO L74 IsIncluded]: Start isIncluded. First operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 34 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 50 states. [2022-04-28 05:04:39,728 INFO L87 Difference]: Start difference. First operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 34 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 50 states. [2022-04-28 05:04:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:39,729 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-04-28 05:04:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-04-28 05:04:39,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:39,729 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:39,729 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:39,729 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 34 states have internal predecessors, (42), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-04-28 05:04:39,731 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 24 [2022-04-28 05:04:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:39,731 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-04-28 05:04:39,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:39,731 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 44 states and 52 transitions. [2022-04-28 05:04:39,769 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:39,770 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-04-28 05:04:39,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-28 05:04:39,770 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:39,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:39,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-28 05:04:39,970 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 05:04:39,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1627795671, now seen corresponding path program 1 times [2022-04-28 05:04:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:39,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [154978553] [2022-04-28 05:04:39,971 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 05:04:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1627795671, now seen corresponding path program 2 times [2022-04-28 05:04:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:39,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315760219] [2022-04-28 05:04:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:39,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:39,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:39,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244838299] [2022-04-28 05:04:39,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:39,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:39,987 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 05:04:39,996 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 05:04:40,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:04:40,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:40,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 05:04:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:40,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:40,105 INFO L272 TraceCheckUtils]: 0: Hoare triple {1605#true} call ULTIMATE.init(); {1605#true} is VALID [2022-04-28 05:04:40,105 INFO L290 TraceCheckUtils]: 1: Hoare triple {1605#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(10, 2);~counter~0 := 0; {1605#true} is VALID [2022-04-28 05:04:40,105 INFO L290 TraceCheckUtils]: 2: Hoare triple {1605#true} assume true; {1605#true} is VALID [2022-04-28 05:04:40,105 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1605#true} {1605#true} #82#return; {1605#true} is VALID [2022-04-28 05:04:40,105 INFO L272 TraceCheckUtils]: 4: Hoare triple {1605#true} call #t~ret4 := main(); {1605#true} is VALID [2022-04-28 05:04:40,105 INFO L290 TraceCheckUtils]: 5: Hoare triple {1605#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,106 INFO L290 TraceCheckUtils]: 6: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,106 INFO L290 TraceCheckUtils]: 7: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !!(#t~post2 < 5);havoc #t~post2; {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,107 INFO L290 TraceCheckUtils]: 8: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,107 INFO L290 TraceCheckUtils]: 9: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,107 INFO L290 TraceCheckUtils]: 10: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !!(#t~post3 < 5);havoc #t~post3; {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,107 INFO L272 TraceCheckUtils]: 11: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1605#true} is VALID [2022-04-28 05:04:40,107 INFO L290 TraceCheckUtils]: 12: Hoare triple {1605#true} ~cond := #in~cond; {1605#true} is VALID [2022-04-28 05:04:40,108 INFO L290 TraceCheckUtils]: 13: Hoare triple {1605#true} assume !(0 == ~cond); {1605#true} is VALID [2022-04-28 05:04:40,108 INFO L290 TraceCheckUtils]: 14: Hoare triple {1605#true} assume true; {1605#true} is VALID [2022-04-28 05:04:40,108 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1605#true} {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} #78#return; {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 16: Hoare triple {1625#(and (= main_~B~0 main_~b~0) (= main_~B~0 1))} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 17: Hoare triple {1606#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 18: Hoare triple {1606#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 19: Hoare triple {1606#false} assume !!(#t~post3 < 5);havoc #t~post3; {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L272 TraceCheckUtils]: 20: Hoare triple {1606#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 21: Hoare triple {1606#false} ~cond := #in~cond; {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 22: Hoare triple {1606#false} assume 0 == ~cond; {1606#false} is VALID [2022-04-28 05:04:40,109 INFO L290 TraceCheckUtils]: 23: Hoare triple {1606#false} assume !false; {1606#false} is VALID [2022-04-28 05:04:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 05:04:40,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 05:04:40,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:40,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315760219] [2022-04-28 05:04:40,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:40,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244838299] [2022-04-28 05:04:40,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244838299] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:40,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:40,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:04:40,111 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:40,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [154978553] [2022-04-28 05:04:40,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [154978553] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:40,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:40,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 05:04:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023984322] [2022-04-28 05:04:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-04-28 05:04:40,112 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:40,112 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,127 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:40,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 05:04:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 05:04:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 05:04:40,128 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:40,189 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2022-04-28 05:04:40,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 05:04:40,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-04-28 05:04:40,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-28 05:04:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-28 05:04:40,191 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 50 transitions. [2022-04-28 05:04:40,222 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:40,223 INFO L225 Difference]: With dead ends: 65 [2022-04-28 05:04:40,223 INFO L226 Difference]: Without dead ends: 33 [2022-04-28 05:04:40,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 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 05:04:40,224 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:40,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-28 05:04:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-28 05:04:40,239 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:40,239 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,239 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,240 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:40,240 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-04-28 05:04:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-04-28 05:04:40,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:40,241 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:40,241 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 33 states. [2022-04-28 05:04:40,241 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 33 states. [2022-04-28 05:04:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:40,242 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-04-28 05:04:40,242 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-04-28 05:04:40,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:40,242 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:40,242 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:40,242 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-04-28 05:04:40,243 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 24 [2022-04-28 05:04:40,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:40,243 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-04-28 05:04:40,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,243 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 39 transitions. [2022-04-28 05:04:40,273 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:40,274 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-04-28 05:04:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 05:04:40,274 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:40,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:40,295 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 05:04:40,487 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 05:04:40,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash 76649582, now seen corresponding path program 1 times [2022-04-28 05:04:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:40,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1460576929] [2022-04-28 05:04:40,493 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 05:04:40,493 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 05:04:40,493 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 05:04:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash 76649582, now seen corresponding path program 2 times [2022-04-28 05:04:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:40,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507547583] [2022-04-28 05:04:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:40,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716300173] [2022-04-28 05:04:40,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:40,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:40,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:40,508 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 05:04:40,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-28 05:04:40,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:04:40,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:40,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 05:04:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:40,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:40,652 INFO L272 TraceCheckUtils]: 0: Hoare triple {1941#true} call ULTIMATE.init(); {1941#true} is VALID [2022-04-28 05:04:40,653 INFO L290 TraceCheckUtils]: 1: Hoare triple {1941#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(10, 2);~counter~0 := 0; {1949#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:40,653 INFO L290 TraceCheckUtils]: 2: Hoare triple {1949#(<= ~counter~0 0)} assume true; {1949#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:40,654 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1949#(<= ~counter~0 0)} {1941#true} #82#return; {1949#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:40,654 INFO L272 TraceCheckUtils]: 4: Hoare triple {1949#(<= ~counter~0 0)} call #t~ret4 := main(); {1949#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:40,654 INFO L290 TraceCheckUtils]: 5: Hoare triple {1949#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1949#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:40,655 INFO L290 TraceCheckUtils]: 6: Hoare triple {1949#(<= ~counter~0 0)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {1965#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:40,655 INFO L290 TraceCheckUtils]: 7: Hoare triple {1965#(<= ~counter~0 1)} assume !!(#t~post2 < 5);havoc #t~post2; {1965#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:40,655 INFO L290 TraceCheckUtils]: 8: Hoare triple {1965#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {1965#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 9: Hoare triple {1965#(<= ~counter~0 1)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {1975#(<= |main_#t~post2| 1)} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 10: Hoare triple {1975#(<= |main_#t~post2| 1)} assume !(#t~post2 < 5);havoc #t~post2; {1942#false} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 11: Hoare triple {1942#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 12: Hoare triple {1942#false} assume !!(#t~post3 < 5);havoc #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,656 INFO L272 TraceCheckUtils]: 13: Hoare triple {1942#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1942#false} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 14: Hoare triple {1942#false} ~cond := #in~cond; {1942#false} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 15: Hoare triple {1942#false} assume !(0 == ~cond); {1942#false} is VALID [2022-04-28 05:04:40,656 INFO L290 TraceCheckUtils]: 16: Hoare triple {1942#false} assume true; {1942#false} is VALID [2022-04-28 05:04:40,657 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {1942#false} {1942#false} #78#return; {1942#false} is VALID [2022-04-28 05:04:40,657 INFO L290 TraceCheckUtils]: 18: Hoare triple {1942#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L290 TraceCheckUtils]: 19: Hoare triple {1942#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L290 TraceCheckUtils]: 20: Hoare triple {1942#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L290 TraceCheckUtils]: 21: Hoare triple {1942#false} assume !(#t~post3 < 5);havoc #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L272 TraceCheckUtils]: 22: Hoare triple {1942#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L290 TraceCheckUtils]: 23: Hoare triple {1942#false} ~cond := #in~cond; {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L290 TraceCheckUtils]: 24: Hoare triple {1942#false} assume 0 == ~cond; {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L290 TraceCheckUtils]: 25: Hoare triple {1942#false} assume !false; {1942#false} is VALID [2022-04-28 05:04:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 05:04:40,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 05:04:40,766 INFO L290 TraceCheckUtils]: 25: Hoare triple {1942#false} assume !false; {1942#false} is VALID [2022-04-28 05:04:40,766 INFO L290 TraceCheckUtils]: 24: Hoare triple {1942#false} assume 0 == ~cond; {1942#false} is VALID [2022-04-28 05:04:40,766 INFO L290 TraceCheckUtils]: 23: Hoare triple {1942#false} ~cond := #in~cond; {1942#false} is VALID [2022-04-28 05:04:40,766 INFO L272 TraceCheckUtils]: 22: Hoare triple {1942#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1942#false} is VALID [2022-04-28 05:04:40,767 INFO L290 TraceCheckUtils]: 21: Hoare triple {1942#false} assume !(#t~post3 < 5);havoc #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,767 INFO L290 TraceCheckUtils]: 20: Hoare triple {1942#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,767 INFO L290 TraceCheckUtils]: 19: Hoare triple {1942#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1942#false} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 18: Hoare triple {1942#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1942#false} is VALID [2022-04-28 05:04:40,768 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {1941#true} {1942#false} #78#return; {1942#false} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 16: Hoare triple {1941#true} assume true; {1941#true} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 15: Hoare triple {1941#true} assume !(0 == ~cond); {1941#true} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 14: Hoare triple {1941#true} ~cond := #in~cond; {1941#true} is VALID [2022-04-28 05:04:40,768 INFO L272 TraceCheckUtils]: 13: Hoare triple {1942#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1941#true} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 12: Hoare triple {1942#false} assume !!(#t~post3 < 5);havoc #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 11: Hoare triple {1942#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1942#false} is VALID [2022-04-28 05:04:40,768 INFO L290 TraceCheckUtils]: 10: Hoare triple {2069#(< |main_#t~post2| 5)} assume !(#t~post2 < 5);havoc #t~post2; {1942#false} is VALID [2022-04-28 05:04:40,769 INFO L290 TraceCheckUtils]: 9: Hoare triple {2073#(< ~counter~0 5)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {2069#(< |main_#t~post2| 5)} is VALID [2022-04-28 05:04:40,769 INFO L290 TraceCheckUtils]: 8: Hoare triple {2073#(< ~counter~0 5)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2073#(< ~counter~0 5)} is VALID [2022-04-28 05:04:40,769 INFO L290 TraceCheckUtils]: 7: Hoare triple {2073#(< ~counter~0 5)} assume !!(#t~post2 < 5);havoc #t~post2; {2073#(< ~counter~0 5)} is VALID [2022-04-28 05:04:40,770 INFO L290 TraceCheckUtils]: 6: Hoare triple {2083#(< ~counter~0 4)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {2073#(< ~counter~0 5)} is VALID [2022-04-28 05:04:40,770 INFO L290 TraceCheckUtils]: 5: Hoare triple {2083#(< ~counter~0 4)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2083#(< ~counter~0 4)} is VALID [2022-04-28 05:04:40,774 INFO L272 TraceCheckUtils]: 4: Hoare triple {2083#(< ~counter~0 4)} call #t~ret4 := main(); {2083#(< ~counter~0 4)} is VALID [2022-04-28 05:04:40,775 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2083#(< ~counter~0 4)} {1941#true} #82#return; {2083#(< ~counter~0 4)} is VALID [2022-04-28 05:04:40,778 INFO L290 TraceCheckUtils]: 2: Hoare triple {2083#(< ~counter~0 4)} assume true; {2083#(< ~counter~0 4)} is VALID [2022-04-28 05:04:40,779 INFO L290 TraceCheckUtils]: 1: Hoare triple {1941#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(10, 2);~counter~0 := 0; {2083#(< ~counter~0 4)} is VALID [2022-04-28 05:04:40,779 INFO L272 TraceCheckUtils]: 0: Hoare triple {1941#true} call ULTIMATE.init(); {1941#true} is VALID [2022-04-28 05:04:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 05:04:40,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:40,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507547583] [2022-04-28 05:04:40,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:40,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716300173] [2022-04-28 05:04:40,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716300173] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 05:04:40,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 05:04:40,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-28 05:04:40,780 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:40,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1460576929] [2022-04-28 05:04:40,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1460576929] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:40,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:40,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 05:04:40,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575224975] [2022-04-28 05:04:40,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:40,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-04-28 05:04:40,781 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:40,781 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,793 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:40,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 05:04:40,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:40,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 05:04:40,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-28 05:04:40,794 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:40,852 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2022-04-28 05:04:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 05:04:40,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-04-28 05:04:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2022-04-28 05:04:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 47 transitions. [2022-04-28 05:04:40,856 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 47 transitions. [2022-04-28 05:04:40,896 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:40,899 INFO L225 Difference]: With dead ends: 56 [2022-04-28 05:04:40,899 INFO L226 Difference]: Without dead ends: 35 [2022-04-28 05:04:40,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-28 05:04:40,900 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:40,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-28 05:04:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-28 05:04:40,922 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:40,922 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,928 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,930 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:40,931 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 05:04:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 05:04:40,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:40,932 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:40,933 INFO L74 IsIncluded]: Start isIncluded. First operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 35 states. [2022-04-28 05:04:40,933 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 35 states. [2022-04-28 05:04:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:40,934 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2022-04-28 05:04:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 05:04:40,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:40,934 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:40,934 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:40,934 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 05:04:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-04-28 05:04:40,935 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 26 [2022-04-28 05:04:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:40,935 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-04-28 05:04:40,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:40,936 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 35 states and 41 transitions. [2022-04-28 05:04:40,974 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-04-28 05:04:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-28 05:04:40,974 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:40,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:40,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-28 05:04:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:41,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:41,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1817538190, now seen corresponding path program 1 times [2022-04-28 05:04:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:41,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1272998193] [2022-04-28 05:04:41,198 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 05:04:41,198 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 05:04:41,198 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 05:04:41,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1817538190, now seen corresponding path program 2 times [2022-04-28 05:04:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:41,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320202441] [2022-04-28 05:04:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:41,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:41,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:41,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481963062] [2022-04-28 05:04:41,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:41,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:41,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:41,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 05:04:41,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-28 05:04:41,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 05:04:41,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 05:04:41,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 05:04:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 05:04:41,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 05:04:41,390 INFO L272 TraceCheckUtils]: 0: Hoare triple {2358#true} call ULTIMATE.init(); {2358#true} is VALID [2022-04-28 05:04:41,391 INFO L290 TraceCheckUtils]: 1: Hoare triple {2358#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(10, 2);~counter~0 := 0; {2366#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:41,391 INFO L290 TraceCheckUtils]: 2: Hoare triple {2366#(<= ~counter~0 0)} assume true; {2366#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:41,392 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2366#(<= ~counter~0 0)} {2358#true} #82#return; {2366#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:41,392 INFO L272 TraceCheckUtils]: 4: Hoare triple {2366#(<= ~counter~0 0)} call #t~ret4 := main(); {2366#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:41,393 INFO L290 TraceCheckUtils]: 5: Hoare triple {2366#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2366#(<= ~counter~0 0)} is VALID [2022-04-28 05:04:41,393 INFO L290 TraceCheckUtils]: 6: Hoare triple {2366#(<= ~counter~0 0)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,393 INFO L290 TraceCheckUtils]: 7: Hoare triple {2382#(<= ~counter~0 1)} assume !!(#t~post2 < 5);havoc #t~post2; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,394 INFO L290 TraceCheckUtils]: 8: Hoare triple {2382#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,394 INFO L290 TraceCheckUtils]: 9: Hoare triple {2382#(<= ~counter~0 1)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {2392#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:41,394 INFO L290 TraceCheckUtils]: 10: Hoare triple {2392#(<= ~counter~0 2)} assume !!(#t~post2 < 5);havoc #t~post2; {2392#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:41,394 INFO L290 TraceCheckUtils]: 11: Hoare triple {2392#(<= ~counter~0 2)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2392#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:41,395 INFO L290 TraceCheckUtils]: 12: Hoare triple {2392#(<= ~counter~0 2)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,395 INFO L290 TraceCheckUtils]: 13: Hoare triple {2402#(<= ~counter~0 3)} assume !!(#t~post3 < 5);havoc #t~post3; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,396 INFO L272 TraceCheckUtils]: 14: Hoare triple {2402#(<= ~counter~0 3)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,396 INFO L290 TraceCheckUtils]: 15: Hoare triple {2402#(<= ~counter~0 3)} ~cond := #in~cond; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,396 INFO L290 TraceCheckUtils]: 16: Hoare triple {2402#(<= ~counter~0 3)} assume !(0 == ~cond); {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,396 INFO L290 TraceCheckUtils]: 17: Hoare triple {2402#(<= ~counter~0 3)} assume true; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,397 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {2402#(<= ~counter~0 3)} {2402#(<= ~counter~0 3)} #78#return; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,397 INFO L290 TraceCheckUtils]: 19: Hoare triple {2402#(<= ~counter~0 3)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,397 INFO L290 TraceCheckUtils]: 20: Hoare triple {2402#(<= ~counter~0 3)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,398 INFO L290 TraceCheckUtils]: 21: Hoare triple {2402#(<= ~counter~0 3)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2430#(<= |main_#t~post3| 3)} is VALID [2022-04-28 05:04:41,398 INFO L290 TraceCheckUtils]: 22: Hoare triple {2430#(<= |main_#t~post3| 3)} assume !(#t~post3 < 5);havoc #t~post3; {2359#false} is VALID [2022-04-28 05:04:41,398 INFO L272 TraceCheckUtils]: 23: Hoare triple {2359#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2359#false} is VALID [2022-04-28 05:04:41,398 INFO L290 TraceCheckUtils]: 24: Hoare triple {2359#false} ~cond := #in~cond; {2359#false} is VALID [2022-04-28 05:04:41,398 INFO L290 TraceCheckUtils]: 25: Hoare triple {2359#false} assume 0 == ~cond; {2359#false} is VALID [2022-04-28 05:04:41,398 INFO L290 TraceCheckUtils]: 26: Hoare triple {2359#false} assume !false; {2359#false} is VALID [2022-04-28 05:04:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 05:04:41,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 05:04:41,561 INFO L290 TraceCheckUtils]: 26: Hoare triple {2359#false} assume !false; {2359#false} is VALID [2022-04-28 05:04:41,561 INFO L290 TraceCheckUtils]: 25: Hoare triple {2359#false} assume 0 == ~cond; {2359#false} is VALID [2022-04-28 05:04:41,561 INFO L290 TraceCheckUtils]: 24: Hoare triple {2359#false} ~cond := #in~cond; {2359#false} is VALID [2022-04-28 05:04:41,561 INFO L272 TraceCheckUtils]: 23: Hoare triple {2359#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2359#false} is VALID [2022-04-28 05:04:41,561 INFO L290 TraceCheckUtils]: 22: Hoare triple {2458#(< |main_#t~post3| 5)} assume !(#t~post3 < 5);havoc #t~post3; {2359#false} is VALID [2022-04-28 05:04:41,562 INFO L290 TraceCheckUtils]: 21: Hoare triple {2462#(< ~counter~0 5)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2458#(< |main_#t~post3| 5)} is VALID [2022-04-28 05:04:41,562 INFO L290 TraceCheckUtils]: 20: Hoare triple {2462#(< ~counter~0 5)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2462#(< ~counter~0 5)} is VALID [2022-04-28 05:04:41,562 INFO L290 TraceCheckUtils]: 19: Hoare triple {2462#(< ~counter~0 5)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2462#(< ~counter~0 5)} is VALID [2022-04-28 05:04:41,563 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {2358#true} {2462#(< ~counter~0 5)} #78#return; {2462#(< ~counter~0 5)} is VALID [2022-04-28 05:04:41,563 INFO L290 TraceCheckUtils]: 17: Hoare triple {2358#true} assume true; {2358#true} is VALID [2022-04-28 05:04:41,563 INFO L290 TraceCheckUtils]: 16: Hoare triple {2358#true} assume !(0 == ~cond); {2358#true} is VALID [2022-04-28 05:04:41,563 INFO L290 TraceCheckUtils]: 15: Hoare triple {2358#true} ~cond := #in~cond; {2358#true} is VALID [2022-04-28 05:04:41,563 INFO L272 TraceCheckUtils]: 14: Hoare triple {2462#(< ~counter~0 5)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2358#true} is VALID [2022-04-28 05:04:41,568 INFO L290 TraceCheckUtils]: 13: Hoare triple {2462#(< ~counter~0 5)} assume !!(#t~post3 < 5);havoc #t~post3; {2462#(< ~counter~0 5)} is VALID [2022-04-28 05:04:41,568 INFO L290 TraceCheckUtils]: 12: Hoare triple {2402#(<= ~counter~0 3)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2462#(< ~counter~0 5)} is VALID [2022-04-28 05:04:41,568 INFO L290 TraceCheckUtils]: 11: Hoare triple {2402#(<= ~counter~0 3)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,569 INFO L290 TraceCheckUtils]: 10: Hoare triple {2402#(<= ~counter~0 3)} assume !!(#t~post2 < 5);havoc #t~post2; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,569 INFO L290 TraceCheckUtils]: 9: Hoare triple {2392#(<= ~counter~0 2)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {2402#(<= ~counter~0 3)} is VALID [2022-04-28 05:04:41,569 INFO L290 TraceCheckUtils]: 8: Hoare triple {2392#(<= ~counter~0 2)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2392#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:41,570 INFO L290 TraceCheckUtils]: 7: Hoare triple {2392#(<= ~counter~0 2)} assume !!(#t~post2 < 5);havoc #t~post2; {2392#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:41,570 INFO L290 TraceCheckUtils]: 6: Hoare triple {2382#(<= ~counter~0 1)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {2392#(<= ~counter~0 2)} is VALID [2022-04-28 05:04:41,570 INFO L290 TraceCheckUtils]: 5: Hoare triple {2382#(<= ~counter~0 1)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := 1;~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,571 INFO L272 TraceCheckUtils]: 4: Hoare triple {2382#(<= ~counter~0 1)} call #t~ret4 := main(); {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,571 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2382#(<= ~counter~0 1)} {2358#true} #82#return; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,571 INFO L290 TraceCheckUtils]: 2: Hoare triple {2382#(<= ~counter~0 1)} assume true; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,572 INFO L290 TraceCheckUtils]: 1: Hoare triple {2358#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(10, 2);~counter~0 := 0; {2382#(<= ~counter~0 1)} is VALID [2022-04-28 05:04:41,572 INFO L272 TraceCheckUtils]: 0: Hoare triple {2358#true} call ULTIMATE.init(); {2358#true} is VALID [2022-04-28 05:04:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 05:04:41,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 05:04:41,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320202441] [2022-04-28 05:04:41,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 05:04:41,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481963062] [2022-04-28 05:04:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481963062] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 05:04:41,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 05:04:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-04-28 05:04:41,573 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 05:04:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1272998193] [2022-04-28 05:04:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1272998193] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 05:04:41,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 05:04:41,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 05:04:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796962048] [2022-04-28 05:04:41,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 05:04:41,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-04-28 05:04:41,574 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 05:04:41,574 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:41,591 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:41,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 05:04:41,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 05:04:41,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-28 05:04:41,592 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:41,715 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2022-04-28 05:04:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 05:04:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-04-28 05:04:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 05:04:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 58 transitions. [2022-04-28 05:04:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 58 transitions. [2022-04-28 05:04:41,718 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 58 transitions. [2022-04-28 05:04:41,749 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:41,750 INFO L225 Difference]: With dead ends: 60 [2022-04-28 05:04:41,750 INFO L226 Difference]: Without dead ends: 53 [2022-04-28 05:04:41,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-04-28 05:04:41,751 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 05:04:41,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 102 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 05:04:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-28 05:04:41,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2022-04-28 05:04:41,778 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 05:04:41,778 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand has 47 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:41,778 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand has 47 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:41,778 INFO L87 Difference]: Start difference. First operand 53 states. Second operand has 47 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:41,779 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-04-28 05:04:41,779 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-04-28 05:04:41,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:41,780 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:41,780 INFO L74 IsIncluded]: Start isIncluded. First operand has 47 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 53 states. [2022-04-28 05:04:41,780 INFO L87 Difference]: Start difference. First operand has 47 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 53 states. [2022-04-28 05:04:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 05:04:41,781 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-04-28 05:04:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-04-28 05:04:41,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 05:04:41,781 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 05:04:41,781 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 05:04:41,781 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 05:04:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 05:04:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-04-28 05:04:41,782 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 27 [2022-04-28 05:04:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 05:04:41,783 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-04-28 05:04:41,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 05:04:41,783 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 47 states and 55 transitions. [2022-04-28 05:04:41,824 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 05:04:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-04-28 05:04:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-04-28 05:04:41,825 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 05:04:41,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 05:04:41,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-28 05:04:42,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:42,025 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 05:04:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 05:04:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1815750730, now seen corresponding path program 1 times [2022-04-28 05:04:42,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 05:04:42,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [770731182] [2022-04-28 05:04:42,032 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-28 05:04:42,032 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because UNSUPPORTED_EIGENVALUES [2022-04-28 05:04:42,032 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 05:04:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1815750730, now seen corresponding path program 2 times [2022-04-28 05:04:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 05:04:42,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071838867] [2022-04-28 05:04:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 05:04:42,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 05:04:42,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 05:04:42,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408220046] [2022-04-28 05:04:42,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 05:04:42,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 05:04:42,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 05:04:42,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 05:04:42,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process