/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/drift_tenth.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 07:04:57,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 07:04:57,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 07:04:57,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 07:04:57,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 07:04:57,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 07:04:57,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 07:04:57,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 07:04:57,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 07:04:57,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 07:04:57,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 07:04:57,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 07:04:57,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 07:04:57,779 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 07:04:57,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 07:04:57,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 07:04:57,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 07:04:57,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 07:04:57,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 07:04:57,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 07:04:57,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 07:04:57,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 07:04:57,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 07:04:57,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 07:04:57,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 07:04:57,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 07:04:57,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 07:04:57,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 07:04:57,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 07:04:57,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 07:04:57,980 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 07:04:57,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/drift_tenth.c.p+cfa-reducer.c [2022-01-31 07:04:58,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60155a7/a341d5d6d95f46bfa1c19eeeeb1f6d0f/FLAGecf57e689 [2022-01-31 07:04:58,389 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 07:04:58,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/drift_tenth.c.p+cfa-reducer.c [2022-01-31 07:04:58,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60155a7/a341d5d6d95f46bfa1c19eeeeb1f6d0f/FLAGecf57e689 [2022-01-31 07:04:58,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60155a7/a341d5d6d95f46bfa1c19eeeeb1f6d0f [2022-01-31 07:04:58,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 07:04:58,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 07:04:58,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 07:04:58,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 07:04:58,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 07:04:58,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcf6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58, skipping insertion in model container [2022-01-31 07:04:58,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 07:04:58,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 07:04:58,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2022-01-31 07:04:58,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 07:04:58,635 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 07:04:58,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/drift_tenth.c.p+cfa-reducer.c[721,734] [2022-01-31 07:04:58,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 07:04:58,657 INFO L208 MainTranslator]: Completed translation [2022-01-31 07:04:58,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58 WrapperNode [2022-01-31 07:04:58,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 07:04:58,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 07:04:58,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 07:04:58,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 07:04:58,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 07:04:58,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 07:04:58,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 07:04:58,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 07:04:58,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (1/1) ... [2022-01-31 07:04:58,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 07:04:58,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:04:58,710 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) [2022-01-31 07:04:58,726 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 [2022-01-31 07:04:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 07:04:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 07:04:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 07:04:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 07:04:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 07:04:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 07:04:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 07:04:58,787 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 07:04:58,789 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 07:04:58,885 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 07:04:58,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 07:04:58,888 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 07:04:58,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:04:58 BoogieIcfgContainer [2022-01-31 07:04:58,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 07:04:58,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 07:04:58,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 07:04:58,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 07:04:58,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:04:58" (1/3) ... [2022-01-31 07:04:58,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1239b636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:04:58, skipping insertion in model container [2022-01-31 07:04:58,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:04:58" (2/3) ... [2022-01-31 07:04:58,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1239b636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:04:58, skipping insertion in model container [2022-01-31 07:04:58,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:04:58" (3/3) ... [2022-01-31 07:04:58,898 INFO L111 eAbstractionObserver]: Analyzing ICFG drift_tenth.c.p+cfa-reducer.c [2022-01-31 07:04:58,901 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 07:04:58,902 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 07:04:58,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 07:04:58,944 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 07:04:58,944 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 07:04:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:04:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-31 07:04:58,960 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:04:58,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:04:58,961 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:04:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:04:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1288850595, now seen corresponding path program 1 times [2022-01-31 07:04:58,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:04:58,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085928042] [2022-01-31 07:04:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:04:58,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:04:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:04:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:04:59,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:04:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085928042] [2022-01-31 07:04:59,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085928042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:04:59,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 07:04:59,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 07:04:59,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344067426] [2022-01-31 07:04:59,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:04:59,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 07:04:59,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:04:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 07:04:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 07:04:59,194 INFO L87 Difference]: Start difference. First operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:04:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:04:59,250 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-01-31 07:04:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 07:04:59,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-01-31 07:04:59,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:04:59,258 INFO L225 Difference]: With dead ends: 22 [2022-01-31 07:04:59,258 INFO L226 Difference]: Without dead ends: 11 [2022-01-31 07:04:59,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 07:04:59,262 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:04:59,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:04:59,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-01-31 07:04:59,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-01-31 07:04:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:04:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-01-31 07:04:59,286 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-01-31 07:04:59,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:04:59,287 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-01-31 07:04:59,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:04:59,287 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-01-31 07:04:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-31 07:04:59,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:04:59,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:04:59,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 07:04:59,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:04:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:04:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1299725260, now seen corresponding path program 1 times [2022-01-31 07:04:59,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:04:59,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250289886] [2022-01-31 07:04:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:04:59,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:04:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:04:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:04:59,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:04:59,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250289886] [2022-01-31 07:04:59,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250289886] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:04:59,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115586564] [2022-01-31 07:04:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:04:59,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:04:59,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:04:59,398 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) [2022-01-31 07:04:59,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 07:04:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 07:04:59,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:04:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:04:59,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:04:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:04:59,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115586564] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:04:59,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:04:59,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 07:04:59,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386207837] [2022-01-31 07:04:59,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:04:59,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 07:04:59,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:04:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 07:04:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 07:04:59,555 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 1 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) [2022-01-31 07:04:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:04:59,619 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-01-31 07:04:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 07:04:59,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 1 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 10 [2022-01-31 07:04:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:04:59,620 INFO L225 Difference]: With dead ends: 17 [2022-01-31 07:04:59,621 INFO L226 Difference]: Without dead ends: 14 [2022-01-31 07:04:59,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-31 07:04:59,625 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:04:59,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:04:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-31 07:04:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-01-31 07:04:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:04:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-01-31 07:04:59,636 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2022-01-31 07:04:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:04:59,637 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-01-31 07:04:59,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 1 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) [2022-01-31 07:04:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-01-31 07:04:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 07:04:59,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:04:59,638 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:04:59,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 07:04:59,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:04:59,850 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:04:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:04:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1047088867, now seen corresponding path program 2 times [2022-01-31 07:04:59,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:04:59,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904501749] [2022-01-31 07:04:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:04:59,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:04:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:04:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:04:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:04:59,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:04:59,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904501749] [2022-01-31 07:04:59,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904501749] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:04:59,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326446026] [2022-01-31 07:04:59,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 07:04:59,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:04:59,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:04:59,948 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) [2022-01-31 07:04:59,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 07:04:59,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 07:04:59,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:04:59,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 07:04:59,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:05:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:05:00,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:05:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:05:00,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326446026] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:05:00,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:05:00,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-01-31 07:05:00,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31795405] [2022-01-31 07:05:00,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:05:00,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 07:05:00,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:05:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 07:05:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2022-01-31 07:05:00,068 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 1 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) [2022-01-31 07:05:00,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:05:00,172 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-01-31 07:05:00,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 07:05:00,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 1 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 13 [2022-01-31 07:05:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:05:00,173 INFO L225 Difference]: With dead ends: 23 [2022-01-31 07:05:00,173 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 07:05:00,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2022-01-31 07:05:00,174 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:05:00,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:05:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 07:05:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 07:05:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:05:00,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-01-31 07:05:00,178 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2022-01-31 07:05:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:05:00,178 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-01-31 07:05:00,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 1 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) [2022-01-31 07:05:00,178 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-01-31 07:05:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 07:05:00,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:05:00,179 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:05:00,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 07:05:00,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 07:05:00,388 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:05:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:05:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1942746691, now seen corresponding path program 3 times [2022-01-31 07:05:00,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:05:00,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564540917] [2022-01-31 07:05:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:05:00,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:05:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 07:05:00,402 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 07:05:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 07:05:00,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 07:05:00,436 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 07:05:00,437 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 07:05:00,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 07:05:00,440 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1] [2022-01-31 07:05:00,442 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 07:05:00,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 07:05:00 BoogieIcfgContainer [2022-01-31 07:05:00,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 07:05:00,457 INFO L158 Benchmark]: Toolchain (without parser) took 2043.47ms. Allocated memory was 189.8MB in the beginning and 239.1MB in the end (delta: 49.3MB). Free memory was 134.3MB in the beginning and 129.9MB in the end (delta: 4.4MB). Peak memory consumption was 54.1MB. Max. memory is 8.0GB. [2022-01-31 07:05:00,457 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 07:05:00,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.48ms. Allocated memory was 189.8MB in the beginning and 239.1MB in the end (delta: 49.3MB). Free memory was 134.2MB in the beginning and 211.7MB in the end (delta: -77.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-01-31 07:05:00,458 INFO L158 Benchmark]: Boogie Preprocessor took 22.39ms. Allocated memory is still 239.1MB. Free memory was 211.7MB in the beginning and 210.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 07:05:00,458 INFO L158 Benchmark]: RCFGBuilder took 208.73ms. Allocated memory is still 239.1MB. Free memory was 210.5MB in the beginning and 200.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 07:05:00,458 INFO L158 Benchmark]: TraceAbstraction took 1565.99ms. Allocated memory is still 239.1MB. Free memory was 199.6MB in the beginning and 129.9MB in the end (delta: 69.7MB). Peak memory consumption was 70.3MB. Max. memory is 8.0GB. [2022-01-31 07:05:00,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.48ms. Allocated memory was 189.8MB in the beginning and 239.1MB in the end (delta: 49.3MB). Free memory was 134.2MB in the beginning and 211.7MB in the end (delta: -77.5MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.39ms. Allocated memory is still 239.1MB. Free memory was 211.7MB in the beginning and 210.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 208.73ms. Allocated memory is still 239.1MB. Free memory was 210.5MB in the beginning and 200.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1565.99ms. Allocated memory is still 239.1MB. Free memory was 199.6MB in the beginning and 129.9MB in the end (delta: 69.7MB). Peak memory consumption was 70.3MB. 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 - UnprovableResult [Line: 29]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=51, __return_main=0] [L9] float main__tick = 0.10000000149011612; [L10] float main__time = 0.0; [L11] int main__i; [L12] main__i = 0 VAL [__return_main=0, main__i=0, main__tick=2500000037252903/25000000000000000, main__time=0] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=1, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=2, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=3, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=4, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=5, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=6, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=7, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=8, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=9, main__tick=2500000037252903/25000000000000000] [L14] COND TRUE main__i < 10 [L16] main__time = main__time + main__tick [L17] main__i = main__i + 1 VAL [__return_main=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L14] COND FALSE !(main__i < 10) [L23] int __tmp_1; [L24] __tmp_1 = main__time != 1.0 [L25] int __VERIFIER_assert__cond; [L26] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L27] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__i=10, main__tick=2500000037252903/25000000000000000] [L29] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__i=10, main__tick=2500000037252903/25000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 30 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-31 07:05:00,497 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...