/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 11:37:04,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 11:37:04,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 11:37:04,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 11:37:04,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 11:37:04,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 11:37:04,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 11:37:04,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 11:37:04,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 11:37:04,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 11:37:04,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 11:37:04,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 11:37:04,658 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 11:37:04,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 11:37:04,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 11:37:04,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 11:37:04,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 11:37:04,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 11:37:04,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 11:37:04,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 11:37:04,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 11:37:04,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 11:37:04,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 11:37:04,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 11:37:04,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 11:37:04,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 11:37:04,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 11:37:04,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 11:37:04,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 11:37:04,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 11:37:04,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 11:37:04,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 11:37:04,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 11:37:04,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 11:37:04,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 11:37:04,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 11:37:04,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 11:37:04,691 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 11:37:04,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 11:37:04,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 11:37:04,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 11:37:04,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 11:37:04,901 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 11:37:04,902 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 11:37:04,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i [2022-04-28 11:37:04,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc77cc6d/20dc3227516b4889a291c1caf8560c5e/FLAGdfe0375d1 [2022-04-28 11:37:05,339 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 11:37:05,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i [2022-04-28 11:37:05,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc77cc6d/20dc3227516b4889a291c1caf8560c5e/FLAGdfe0375d1 [2022-04-28 11:37:05,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fc77cc6d/20dc3227516b4889a291c1caf8560c5e [2022-04-28 11:37:05,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 11:37:05,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 11:37:05,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 11:37:05,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 11:37:05,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 11:37:05,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c587739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05, skipping insertion in model container [2022-04-28 11:37:05,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 11:37:05,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 11:37:05,923 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_unwindbound1.i[951,964] [2022-04-28 11:37:05,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 11:37:05,940 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 11:37:05,949 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_unwindbound1.i[951,964] [2022-04-28 11:37:05,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 11:37:05,962 INFO L208 MainTranslator]: Completed translation [2022-04-28 11:37:05,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05 WrapperNode [2022-04-28 11:37:05,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 11:37:05,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 11:37:05,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 11:37:05,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 11:37:05,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:05,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 11:37:05,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 11:37:05,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 11:37:05,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 11:37:06,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (1/1) ... [2022-04-28 11:37:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 11:37:06,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:37:06,023 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 11:37:06,026 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 11:37:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 11:37:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 11:37:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 11:37:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 11:37:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 11:37:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 11:37:06,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 11:37:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 11:37:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 11:37:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 11:37:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 11:37:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 11:37:06,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 11:37:06,093 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 11:37:06,094 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 11:37:06,237 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 11:37:06,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 11:37:06,242 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 11:37:06,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:37:06 BoogieIcfgContainer [2022-04-28 11:37:06,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 11:37:06,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 11:37:06,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 11:37:06,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 11:37:06,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:37:05" (1/3) ... [2022-04-28 11:37:06,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16469aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:37:06, skipping insertion in model container [2022-04-28 11:37:06,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:37:05" (2/3) ... [2022-04-28 11:37:06,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16469aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:37:06, skipping insertion in model container [2022-04-28 11:37:06,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:37:06" (3/3) ... [2022-04-28 11:37:06,264 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.i [2022-04-28 11:37:06,288 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 11:37:06,289 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 11:37:06,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 11:37:06,341 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@59ef6b21, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14d4e23a [2022-04-28 11:37:06,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 11:37:06,363 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 11:37:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 11:37:06,372 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:37:06,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 11:37:06,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:37:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:37:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2126508982, now seen corresponding path program 1 times [2022-04-28 11:37:06,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:06,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [130095789] [2022-04-28 11:37:06,398 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:37:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2126508982, now seen corresponding path program 2 times [2022-04-28 11:37:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:37:06,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671251611] [2022-04-28 11:37:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:37:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:37:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 11:37:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:06,551 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 11:37:06,551 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2022-04-28 11:37:06,552 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #82#return; {29#true} is VALID [2022-04-28 11:37:06,553 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 11:37:06,553 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 11:37:06,554 INFO L290 TraceCheckUtils]: 2: Hoare triple {29#true} assume true; {29#true} is VALID [2022-04-28 11:37:06,554 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29#true} {29#true} #82#return; {29#true} is VALID [2022-04-28 11:37:06,554 INFO L272 TraceCheckUtils]: 4: Hoare triple {29#true} call #t~ret4 := main(); {29#true} is VALID [2022-04-28 11:37:06,554 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 11:37:06,555 INFO L290 TraceCheckUtils]: 6: Hoare triple {29#true} assume !true; {30#false} is VALID [2022-04-28 11:37:06,555 INFO L290 TraceCheckUtils]: 7: Hoare triple {30#false} assume !true; {30#false} is VALID [2022-04-28 11:37:06,555 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 11:37:06,555 INFO L290 TraceCheckUtils]: 9: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2022-04-28 11:37:06,555 INFO L290 TraceCheckUtils]: 10: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2022-04-28 11:37:06,555 INFO L290 TraceCheckUtils]: 11: Hoare triple {30#false} assume !false; {30#false} is VALID [2022-04-28 11:37:06,556 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 11:37:06,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:37:06,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671251611] [2022-04-28 11:37:06,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671251611] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:06,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:06,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 11:37:06,559 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:37:06,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [130095789] [2022-04-28 11:37:06,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [130095789] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:06,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:06,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 11:37:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237757234] [2022-04-28 11:37:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:37:06,563 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 11:37:06,564 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:37:06,566 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 11:37:06,580 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 11:37:06,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 11:37:06,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 11:37:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 11:37:06,599 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 11:37:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:06,736 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-04-28 11:37:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 11:37:06,736 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 11:37:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:37:06,737 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 11:37:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-04-28 11:37:06,743 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 11:37:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2022-04-28 11:37:06,748 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 60 transitions. [2022-04-28 11:37:06,800 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 11:37:06,806 INFO L225 Difference]: With dead ends: 44 [2022-04-28 11:37:06,806 INFO L226 Difference]: Without dead ends: 22 [2022-04-28 11:37:06,810 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 11:37:06,813 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 11:37:06,814 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 11:37:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-28 11:37:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-04-28 11:37:06,835 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:37:06,836 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 11:37:06,836 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 11:37:06,837 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 11:37:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:06,845 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-04-28 11:37:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-04-28 11:37:06,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:06,846 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:06,847 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 11:37:06,847 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 11:37:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:06,850 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2022-04-28 11:37:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-04-28 11:37:06,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:06,851 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:06,851 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:37:06,852 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:37:06,852 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 11:37:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-04-28 11:37:06,858 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2022-04-28 11:37:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:37:06,859 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-04-28 11:37:06,860 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 11:37:06,860 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 21 states and 26 transitions. [2022-04-28 11:37:06,887 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 11:37:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-04-28 11:37:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 11:37:06,892 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:37:06,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 11:37:06,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 11:37:06,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:37:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:37:06,893 INFO L85 PathProgramCache]: Analyzing trace with hash 941422680, now seen corresponding path program 1 times [2022-04-28 11:37:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:06,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [342302858] [2022-04-28 11:37:06,897 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:37:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 941422680, now seen corresponding path program 2 times [2022-04-28 11:37:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:37:06,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070862492] [2022-04-28 11:37:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:37:06,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:37:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:06,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 11:37:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:06,984 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 11:37:06,985 INFO L290 TraceCheckUtils]: 1: Hoare triple {216#(<= ~counter~0 0)} assume true; {216#(<= ~counter~0 0)} is VALID [2022-04-28 11:37:06,986 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {216#(<= ~counter~0 0)} {211#true} #82#return; {216#(<= ~counter~0 0)} is VALID [2022-04-28 11:37:06,987 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 11:37:06,988 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 11:37:06,989 INFO L290 TraceCheckUtils]: 2: Hoare triple {216#(<= ~counter~0 0)} assume true; {216#(<= ~counter~0 0)} is VALID [2022-04-28 11:37:06,989 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {216#(<= ~counter~0 0)} {211#true} #82#return; {216#(<= ~counter~0 0)} is VALID [2022-04-28 11:37:06,990 INFO L272 TraceCheckUtils]: 4: Hoare triple {216#(<= ~counter~0 0)} call #t~ret4 := main(); {216#(<= ~counter~0 0)} is VALID [2022-04-28 11:37:06,990 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 11:37:06,991 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 11:37:06,992 INFO L290 TraceCheckUtils]: 7: Hoare triple {217#(<= |main_#t~post2| 0)} assume !(#t~post2 < 1);havoc #t~post2; {212#false} is VALID [2022-04-28 11:37:06,992 INFO L290 TraceCheckUtils]: 8: Hoare triple {212#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {212#false} is VALID [2022-04-28 11:37:06,992 INFO L290 TraceCheckUtils]: 9: Hoare triple {212#false} assume !(#t~post3 < 1);havoc #t~post3; {212#false} is VALID [2022-04-28 11:37:06,992 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 11:37:06,992 INFO L290 TraceCheckUtils]: 11: Hoare triple {212#false} ~cond := #in~cond; {212#false} is VALID [2022-04-28 11:37:06,992 INFO L290 TraceCheckUtils]: 12: Hoare triple {212#false} assume 0 == ~cond; {212#false} is VALID [2022-04-28 11:37:06,993 INFO L290 TraceCheckUtils]: 13: Hoare triple {212#false} assume !false; {212#false} is VALID [2022-04-28 11:37:06,993 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 11:37:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:37:06,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070862492] [2022-04-28 11:37:06,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070862492] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:06,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:06,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 11:37:06,994 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:37:06,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [342302858] [2022-04-28 11:37:06,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [342302858] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:06,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:06,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 11:37:06,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792589823] [2022-04-28 11:37:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:37:06,996 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 11:37:06,997 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:37:06,997 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 11:37:07,009 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 11:37:07,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 11:37:07,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 11:37:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 11:37:07,011 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 11:37:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:07,138 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-04-28 11:37:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 11:37:07,138 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 11:37:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:37:07,139 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 11:37:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-04-28 11:37:07,144 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 11:37:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-04-28 11:37:07,147 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 44 transitions. [2022-04-28 11:37:07,182 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 11:37:07,185 INFO L225 Difference]: With dead ends: 35 [2022-04-28 11:37:07,185 INFO L226 Difference]: Without dead ends: 23 [2022-04-28 11:37:07,185 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 11:37:07,187 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 11:37:07,190 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 11:37:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-28 11:37:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-28 11:37:07,205 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:37:07,206 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 11:37:07,206 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 11:37:07,206 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 11:37:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:07,209 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-04-28 11:37:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-04-28 11:37:07,209 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:07,209 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:07,210 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 11:37:07,210 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 11:37:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:07,212 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-04-28 11:37:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-04-28 11:37:07,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:07,212 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:07,212 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:37:07,212 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:37:07,214 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 11:37:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-04-28 11:37:07,217 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 14 [2022-04-28 11:37:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:37:07,217 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-04-28 11:37:07,217 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 11:37:07,218 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 28 transitions. [2022-04-28 11:37:07,242 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 11:37:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-04-28 11:37:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-28 11:37:07,243 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:37:07,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 11:37:07,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-28 11:37:07,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:37:07,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:37:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1209133518, now seen corresponding path program 1 times [2022-04-28 11:37:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:07,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1940371632] [2022-04-28 11:37:07,248 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:37:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1209133518, now seen corresponding path program 2 times [2022-04-28 11:37:07,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:37:07,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903349410] [2022-04-28 11:37:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:37:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:37:07,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:37:07,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093086038] [2022-04-28 11:37:07,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:37:07,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:37:07,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:37:07,297 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 11:37:07,324 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 11:37:07,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 11:37:07,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:37:07,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-28 11:37:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:07,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:37:07,652 INFO L272 TraceCheckUtils]: 0: Hoare triple {385#true} call ULTIMATE.init(); {385#true} is VALID [2022-04-28 11:37:07,652 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; {385#true} is VALID [2022-04-28 11:37:07,653 INFO L290 TraceCheckUtils]: 2: Hoare triple {385#true} assume true; {385#true} is VALID [2022-04-28 11:37:07,653 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {385#true} {385#true} #82#return; {385#true} is VALID [2022-04-28 11:37:07,653 INFO L272 TraceCheckUtils]: 4: Hoare triple {385#true} call #t~ret4 := main(); {385#true} is VALID [2022-04-28 11:37:07,653 INFO L290 TraceCheckUtils]: 5: Hoare triple {385#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; {405#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:07,654 INFO L290 TraceCheckUtils]: 6: Hoare triple {405#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {405#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:07,655 INFO L290 TraceCheckUtils]: 7: Hoare triple {405#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post2 < 1);havoc #t~post2; {405#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:07,655 INFO L290 TraceCheckUtils]: 8: Hoare triple {405#(and (= main_~b~0 1) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {415#(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 11:37:07,656 INFO L290 TraceCheckUtils]: 9: Hoare triple {415#(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; {415#(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 11:37:07,656 INFO L290 TraceCheckUtils]: 10: Hoare triple {415#(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 < 1);havoc #t~post3; {415#(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 11:37:07,657 INFO L272 TraceCheckUtils]: 11: Hoare triple {415#(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)); {425#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 11:37:07,658 INFO L290 TraceCheckUtils]: 12: Hoare triple {425#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {429#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 11:37:07,658 INFO L290 TraceCheckUtils]: 13: Hoare triple {429#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {386#false} is VALID [2022-04-28 11:37:07,658 INFO L290 TraceCheckUtils]: 14: Hoare triple {386#false} assume !false; {386#false} is VALID [2022-04-28 11:37:07,658 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 11:37:07,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:37:07,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:37:07,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903349410] [2022-04-28 11:37:07,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:37:07,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093086038] [2022-04-28 11:37:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093086038] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:07,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:07,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 11:37:07,660 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:37:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1940371632] [2022-04-28 11:37:07,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1940371632] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:07,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:07,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 11:37:07,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27822448] [2022-04-28 11:37:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:37:07,661 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 11:37:07,661 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:37:07,661 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 11:37:07,673 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 11:37:07,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 11:37:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 11:37:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-28 11:37:07,674 INFO L87 Difference]: Start difference. First operand 23 states and 28 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 11:37:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:07,795 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-04-28 11:37:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 11:37:07,795 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 11:37:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:37:07,795 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 11:37:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-28 11:37:07,797 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 11:37:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-28 11:37:07,798 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 43 transitions. [2022-04-28 11:37:07,830 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:37:07,831 INFO L225 Difference]: With dead ends: 35 [2022-04-28 11:37:07,831 INFO L226 Difference]: Without dead ends: 32 [2022-04-28 11:37:07,831 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 11:37:07,832 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:37:07,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:37:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-28 11:37:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-28 11:37:07,844 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:37:07,844 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 11:37:07,845 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 11:37:07,845 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 11:37:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:07,846 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-04-28 11:37:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 11:37:07,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:07,846 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:07,847 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 11:37:07,847 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 11:37:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:07,848 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2022-04-28 11:37:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 11:37:07,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:07,848 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:07,848 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:37:07,849 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:37:07,849 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 11:37:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-04-28 11:37:07,850 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 15 [2022-04-28 11:37:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:37:07,850 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-04-28 11:37:07,850 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 11:37:07,850 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 38 transitions. [2022-04-28 11:37:07,880 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 11:37:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 11:37:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-28 11:37:07,881 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:37:07,881 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 11:37:07,904 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 11:37:08,098 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 11:37:08,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:37:08,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:37:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -352921097, now seen corresponding path program 1 times [2022-04-28 11:37:08,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:08,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1498721161] [2022-04-28 11:37:08,120 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 11:37:08,120 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 11:37:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash -352921097, now seen corresponding path program 2 times [2022-04-28 11:37:08,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:37:08,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742899957] [2022-04-28 11:37:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:37:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:37:08,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:37:08,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597260969] [2022-04-28 11:37:08,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:37:08,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:37:08,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:37:08,132 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 11:37:08,152 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 11:37:08,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 11:37:08,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:37:08,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 11:37:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:08,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:37:08,285 INFO L272 TraceCheckUtils]: 0: Hoare triple {635#true} call ULTIMATE.init(); {635#true} is VALID [2022-04-28 11:37:08,286 INFO L290 TraceCheckUtils]: 1: Hoare triple {635#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; {635#true} is VALID [2022-04-28 11:37:08,286 INFO L290 TraceCheckUtils]: 2: Hoare triple {635#true} assume true; {635#true} is VALID [2022-04-28 11:37:08,286 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {635#true} {635#true} #82#return; {635#true} is VALID [2022-04-28 11:37:08,286 INFO L272 TraceCheckUtils]: 4: Hoare triple {635#true} call #t~ret4 := main(); {635#true} is VALID [2022-04-28 11:37:08,287 INFO L290 TraceCheckUtils]: 5: Hoare triple {635#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; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,287 INFO L290 TraceCheckUtils]: 6: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,287 INFO L290 TraceCheckUtils]: 7: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post2 < 1);havoc #t~post2; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,288 INFO L290 TraceCheckUtils]: 8: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,288 INFO L290 TraceCheckUtils]: 9: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,289 INFO L290 TraceCheckUtils]: 10: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(#t~post2 < 1);havoc #t~post2; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,289 INFO L290 TraceCheckUtils]: 11: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,290 INFO L290 TraceCheckUtils]: 12: Hoare triple {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(#t~post3 < 1);havoc #t~post3; {655#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:37:08,290 INFO L272 TraceCheckUtils]: 13: Hoare triple {655#(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)); {680#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 11:37:08,291 INFO L290 TraceCheckUtils]: 14: Hoare triple {680#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {684#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 11:37:08,291 INFO L290 TraceCheckUtils]: 15: Hoare triple {684#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {636#false} is VALID [2022-04-28 11:37:08,291 INFO L290 TraceCheckUtils]: 16: Hoare triple {636#false} assume !false; {636#false} is VALID [2022-04-28 11:37:08,292 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 11:37:08,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:37:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:37:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742899957] [2022-04-28 11:37:08,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:37:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597260969] [2022-04-28 11:37:08,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597260969] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:08,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:08,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:37:08,292 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:37:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1498721161] [2022-04-28 11:37:08,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1498721161] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:08,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:08,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:37:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90059383] [2022-04-28 11:37:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:37:08,293 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 11:37:08,293 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:37:08,293 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 11:37:08,305 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 11:37:08,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 11:37:08,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:08,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 11:37:08,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 11:37:08,306 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 11:37:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:08,421 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-04-28 11:37:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 11:37:08,422 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 11:37:08,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:37:08,422 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 11:37:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 11:37:08,423 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 11:37:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-04-28 11:37:08,424 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 41 transitions. [2022-04-28 11:37:08,477 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 11:37:08,481 INFO L225 Difference]: With dead ends: 44 [2022-04-28 11:37:08,481 INFO L226 Difference]: Without dead ends: 41 [2022-04-28 11:37:08,481 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 11:37:08,484 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 11:37:08,484 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 11:37:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-28 11:37:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2022-04-28 11:37:08,505 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:37:08,505 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 11:37:08,506 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 11:37:08,506 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 11:37:08,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:08,509 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-28 11:37:08,509 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-04-28 11:37:08,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:08,510 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:08,510 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 11:37:08,510 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 11:37:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:08,514 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-28 11:37:08,514 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-04-28 11:37:08,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:08,514 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:08,514 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:37:08,514 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:37:08,514 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 11:37:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-04-28 11:37:08,515 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2022-04-28 11:37:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:37:08,516 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-04-28 11:37:08,516 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 11:37:08,516 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 38 transitions. [2022-04-28 11:37:08,549 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 11:37:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-04-28 11:37:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-28 11:37:08,550 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:37:08,550 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 11:37:08,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-28 11:37:08,767 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 11:37:08,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:37:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:37:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1626008211, now seen corresponding path program 1 times [2022-04-28 11:37:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:08,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [346394884] [2022-04-28 11:37:08,769 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 11:37:08,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1626008211, now seen corresponding path program 2 times [2022-04-28 11:37:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:37:08,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330745501] [2022-04-28 11:37:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:37:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:37:08,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:37:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890806416] [2022-04-28 11:37:08,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:37:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:37:08,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:37:08,796 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 11:37:08,857 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 11:37:08,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 11:37:08,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:37:08,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 11:37:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:37:08,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:37:08,967 INFO L272 TraceCheckUtils]: 0: Hoare triple {926#true} call ULTIMATE.init(); {926#true} is VALID [2022-04-28 11:37:08,968 INFO L290 TraceCheckUtils]: 1: Hoare triple {926#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; {934#(<= 0 ~counter~0)} is VALID [2022-04-28 11:37:08,968 INFO L290 TraceCheckUtils]: 2: Hoare triple {934#(<= 0 ~counter~0)} assume true; {934#(<= 0 ~counter~0)} is VALID [2022-04-28 11:37:08,968 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {934#(<= 0 ~counter~0)} {926#true} #82#return; {934#(<= 0 ~counter~0)} is VALID [2022-04-28 11:37:08,969 INFO L272 TraceCheckUtils]: 4: Hoare triple {934#(<= 0 ~counter~0)} call #t~ret4 := main(); {934#(<= 0 ~counter~0)} is VALID [2022-04-28 11:37:08,969 INFO L290 TraceCheckUtils]: 5: Hoare triple {934#(<= 0 ~counter~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; {934#(<= 0 ~counter~0)} is VALID [2022-04-28 11:37:08,970 INFO L290 TraceCheckUtils]: 6: Hoare triple {934#(<= 0 ~counter~0)} #t~post2 := ~counter~0;~counter~0 := 1 + #t~post2; {950#(<= 1 ~counter~0)} is VALID [2022-04-28 11:37:08,970 INFO L290 TraceCheckUtils]: 7: Hoare triple {950#(<= 1 ~counter~0)} assume !!(#t~post2 < 1);havoc #t~post2; {950#(<= 1 ~counter~0)} is VALID [2022-04-28 11:37:08,970 INFO L290 TraceCheckUtils]: 8: Hoare triple {950#(<= 1 ~counter~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {950#(<= 1 ~counter~0)} is VALID [2022-04-28 11:37:08,971 INFO L290 TraceCheckUtils]: 9: Hoare triple {950#(<= 1 ~counter~0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {960#(<= 1 |main_#t~post3|)} is VALID [2022-04-28 11:37:08,971 INFO L290 TraceCheckUtils]: 10: Hoare triple {960#(<= 1 |main_#t~post3|)} assume !!(#t~post3 < 1);havoc #t~post3; {927#false} is VALID [2022-04-28 11:37:08,971 INFO L272 TraceCheckUtils]: 11: Hoare triple {927#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {927#false} is VALID [2022-04-28 11:37:08,971 INFO L290 TraceCheckUtils]: 12: Hoare triple {927#false} ~cond := #in~cond; {927#false} is VALID [2022-04-28 11:37:08,971 INFO L290 TraceCheckUtils]: 13: Hoare triple {927#false} assume !(0 == ~cond); {927#false} is VALID [2022-04-28 11:37:08,971 INFO L290 TraceCheckUtils]: 14: Hoare triple {927#false} assume true; {927#false} is VALID [2022-04-28 11:37:08,971 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {927#false} {927#false} #78#return; {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 16: Hoare triple {927#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); {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 17: Hoare triple {927#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 18: Hoare triple {927#false} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 19: Hoare triple {927#false} assume !(#t~post3 < 1);havoc #t~post3; {927#false} is VALID [2022-04-28 11:37:08,972 INFO L272 TraceCheckUtils]: 20: Hoare triple {927#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 21: Hoare triple {927#false} ~cond := #in~cond; {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 22: Hoare triple {927#false} assume 0 == ~cond; {927#false} is VALID [2022-04-28 11:37:08,972 INFO L290 TraceCheckUtils]: 23: Hoare triple {927#false} assume !false; {927#false} is VALID [2022-04-28 11:37:08,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-28 11:37:08,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:37:08,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:37:08,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330745501] [2022-04-28 11:37:08,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:37:08,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890806416] [2022-04-28 11:37:08,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890806416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:08,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:08,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:37:08,973 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:37:08,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [346394884] [2022-04-28 11:37:08,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [346394884] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:37:08,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:37:08,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:37:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462965856] [2022-04-28 11:37:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:37:08,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 24 [2022-04-28 11:37:08,974 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:37:08,974 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 11:37:08,989 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:37:08,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 11:37:08,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:37:08,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 11:37:08,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 11:37:08,990 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 11:37:09,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:09,031 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-04-28 11:37:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 11:37:09,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 24 [2022-04-28 11:37:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:37:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 11:37:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2022-04-28 11:37:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 11:37:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2022-04-28 11:37:09,034 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 29 transitions. [2022-04-28 11:37:09,055 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:37:09,055 INFO L225 Difference]: With dead ends: 34 [2022-04-28 11:37:09,055 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 11:37:09,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-28 11:37:09,056 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:37:09,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:37:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 11:37:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 11:37:09,057 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:37:09,057 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 11:37:09,057 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 11:37:09,057 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 11:37:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:09,058 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 11:37:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 11:37:09,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:09,058 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:09,058 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 11:37:09,058 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 11:37:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:37:09,058 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 11:37:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 11:37:09,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:09,058 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:37:09,058 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:37:09,058 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:37:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 11:37:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 11:37:09,059 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-04-28 11:37:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:37:09,059 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 11:37:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 11:37:09,059 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 11:37:09,059 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:37:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 11:37:09,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:37:09,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 11:37:09,104 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 11:37:09,284 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 11:37:09,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 17) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 15 17) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 15 17) no Hoare annotation was computed. [2022-04-28 11:37:09,537 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 26 50) the Hoare annotation is: true [2022-04-28 11:37:09,537 INFO L902 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2022-04-28 11:37:09,537 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 26 50) the Hoare annotation is: true [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L38(lines 38 47) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (= main_~A~0 main_~r~0) (<= 1 ~counter~0) (= main_~q~0 0) (<= 1 |main_#t~post3|)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 47) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (= main_~A~0 main_~r~0) (= main_~q~0 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L34-1(lines 34 37) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (= main_~A~0 main_~r~0) (<= 1 ~counter~0) (= main_~q~0 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= main_~A~0 main_~r~0)) (.cse1 (= main_~q~0 0))) (or (and (= main_~b~0 1) .cse0 (<= 0 ~counter~0) .cse1) (not (<= |old(~counter~0)| 0)) (and .cse0 (<= 1 ~counter~0) .cse1) (not (<= 0 |old(~counter~0)|)))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point mainENTRY(lines 26 50) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (<= 0 ~counter~0) (<= ~counter~0 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L43(lines 43 46) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 26 50) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (= main_~A~0 main_~r~0) (<= 1 ~counter~0) (= main_~q~0 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L39-1(lines 38 47) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (and (= main_~A~0 main_~r~0) (<= 1 ~counter~0) (= main_~q~0 0)) (not (<= 0 |old(~counter~0)|))) [2022-04-28 11:37:09,538 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 0 ~counter~0) (<= ~counter~0 0)) [2022-04-28 11:37:09,539 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 11:37:09,539 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 0 ~counter~0) (<= ~counter~0 0)) [2022-04-28 11:37:09,539 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 11:37:09,539 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~counter~0) (<= ~counter~0 0)) [2022-04-28 11:37:09,539 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 11:37:09,539 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 11:37:09,539 INFO L902 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: true [2022-04-28 11:37:09,539 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 18 24) the Hoare annotation is: true [2022-04-28 11:37:09,539 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 18 24) the Hoare annotation is: true [2022-04-28 11:37:09,539 INFO L895 garLoopResultBuilder]: At program point L20(lines 20 21) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 11:37:09,539 INFO L895 garLoopResultBuilder]: At program point L19(lines 19 22) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-28 11:37:09,539 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 11:37:09,542 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2] [2022-04-28 11:37:09,544 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 11:37:09,546 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 11:37:09,547 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 11:37:09,548 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 11:37:09,551 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2022-04-28 11:37:09,552 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 11:37:09,552 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 11:37:09,558 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 11:37:09,576 INFO L163 areAnnotationChecker]: CFG has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 11:37:09,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 11:37:09 BoogieIcfgContainer [2022-04-28 11:37:09,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 11:37:09,586 INFO L158 Benchmark]: Toolchain (without parser) took 3826.98ms. Allocated memory was 211.8MB in the beginning and 260.0MB in the end (delta: 48.2MB). Free memory was 156.7MB in the beginning and 169.6MB in the end (delta: -12.9MB). Peak memory consumption was 36.9MB. Max. memory is 8.0GB. [2022-04-28 11:37:09,586 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 211.8MB. Free memory is still 172.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 11:37:09,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.23ms. Allocated memory is still 211.8MB. Free memory was 156.5MB in the beginning and 181.7MB in the end (delta: -25.2MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-04-28 11:37:09,586 INFO L158 Benchmark]: Boogie Preprocessor took 35.48ms. Allocated memory is still 211.8MB. Free memory was 181.4MB in the beginning and 179.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 11:37:09,587 INFO L158 Benchmark]: RCFGBuilder took 244.76ms. Allocated memory is still 211.8MB. Free memory was 179.6MB in the beginning and 168.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 11:37:09,587 INFO L158 Benchmark]: TraceAbstraction took 3339.91ms. Allocated memory was 211.8MB in the beginning and 260.0MB in the end (delta: 48.2MB). Free memory was 167.7MB in the beginning and 169.6MB in the end (delta: -1.8MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2022-04-28 11:37:09,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 211.8MB. Free memory is still 172.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.23ms. Allocated memory is still 211.8MB. Free memory was 156.5MB in the beginning and 181.7MB in the end (delta: -25.2MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.48ms. Allocated memory is still 211.8MB. Free memory was 181.4MB in the beginning and 179.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.76ms. Allocated memory is still 211.8MB. Free memory was 179.6MB in the beginning and 168.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3339.91ms. Allocated memory was 211.8MB in the beginning and 260.0MB in the end (delta: 48.2MB). Free memory was 167.7MB in the beginning and 169.6MB in the end (delta: -1.8MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 249 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 146 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 103 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 74 PreInvPairs, 97 NumberOfFragments, 226 HoareAnnotationTreeSize, 74 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 26 FomulaSimplificationsInter, 99 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((b == 1 && A == r) && 0 <= counter) && q == 0) || !(\old(counter) <= 0)) || ((A == r && 1 <= counter) && q == 0)) || !(0 <= \old(counter)) - ProcedureContractResult [Line: 26]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-04-28 11:37:09,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...