/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:50:40,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:50:40,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:50:40,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:50:40,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:50:40,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:50:40,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:50:40,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:50:40,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:50:40,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:50:40,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:50:40,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:50:40,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:50:40,875 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:50:40,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:50:40,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:50:40,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:50:40,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:50:40,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:50:40,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:50:41,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:50:41,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:50:41,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:50:41,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:50:41,105 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:50:41,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2022-01-10 00:50:41,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28be43f0c/5fa89036a5254d508336e3776cbd8d76/FLAG7889fce10 [2022-01-10 00:50:41,521 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:50:41,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2022-01-10 00:50:41,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28be43f0c/5fa89036a5254d508336e3776cbd8d76/FLAG7889fce10 [2022-01-10 00:50:41,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28be43f0c/5fa89036a5254d508336e3776cbd8d76 [2022-01-10 00:50:41,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:50:41,537 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:50:41,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:50:41,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:50:41,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:50:41,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ef058d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41, skipping insertion in model container [2022-01-10 00:50:41,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:50:41,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:50:41,705 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c[704,717] [2022-01-10 00:50:41,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:50:41,712 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:50:41,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c[704,717] [2022-01-10 00:50:41,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:50:41,741 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:50:41,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41 WrapperNode [2022-01-10 00:50:41,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:50:41,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:50:41,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:50:41,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:50:41,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,778 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-01-10 00:50:41,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:50:41,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:50:41,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:50:41,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:50:41,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:50:41,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:50:41,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:50:41,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:50:41,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (1/1) ... [2022-01-10 00:50:41,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:50:41,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:41,851 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) [2022-01-10 00:50:41,870 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 [2022-01-10 00:50:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:50:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:50:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 00:50:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-10 00:50:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:50:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:50:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-10 00:50:41,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 00:50:41,942 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:50:41,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:50:42,017 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:50:42,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:50:42,021 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:50:42,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:50:42 BoogieIcfgContainer [2022-01-10 00:50:42,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:50:42,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:50:42,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:50:42,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:50:42,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:50:41" (1/3) ... [2022-01-10 00:50:42,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad9ecbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:50:42, skipping insertion in model container [2022-01-10 00:50:42,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:50:41" (2/3) ... [2022-01-10 00:50:42,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad9ecbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:50:42, skipping insertion in model container [2022-01-10 00:50:42,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:50:42" (3/3) ... [2022-01-10 00:50:42,027 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2022-01-10 00:50:42,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:50:42,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:50:42,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:50:42,062 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 [2022-01-10 00:50:42,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:50:42,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-01-10 00:50:42,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 00:50:42,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:42,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:42,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:42,083 INFO L85 PathProgramCache]: Analyzing trace with hash 126985497, now seen corresponding path program 1 times [2022-01-10 00:50:42,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:42,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836072424] [2022-01-10 00:50:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:42,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:42,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:42,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836072424] [2022-01-10 00:50:42,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836072424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:50:42,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:50:42,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:50:42,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81717958] [2022-01-10 00:50:42,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:50:42,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 00:50:42,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 00:50:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 00:50:42,207 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-01-10 00:50:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:42,215 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-01-10 00:50:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 00:50:42,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) Word has length 8 [2022-01-10 00:50:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:42,221 INFO L225 Difference]: With dead ends: 23 [2022-01-10 00:50:42,221 INFO L226 Difference]: Without dead ends: 10 [2022-01-10 00:50:42,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 00:50:42,235 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:42,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 00:50:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-01-10 00:50:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-01-10 00:50:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-01-10 00:50:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-01-10 00:50:42,259 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2022-01-10 00:50:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:42,260 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-01-10 00:50:42,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-01-10 00:50:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-01-10 00:50:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 00:50:42,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:42,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:42,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:50:42,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:42,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:42,261 INFO L85 PathProgramCache]: Analyzing trace with hash -564424753, now seen corresponding path program 1 times [2022-01-10 00:50:42,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:42,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759578446] [2022-01-10 00:50:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:42,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:42,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:42,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759578446] [2022-01-10 00:50:42,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759578446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:50:42,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:50:42,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:50:42,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958443267] [2022-01-10 00:50:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:50:42,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:50:42,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:50:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:50:42,334 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 00:50:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:42,360 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-01-10 00:50:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:50:42,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2022-01-10 00:50:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:42,361 INFO L225 Difference]: With dead ends: 17 [2022-01-10 00:50:42,361 INFO L226 Difference]: Without dead ends: 12 [2022-01-10 00:50:42,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:50:42,362 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:42,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 00:50:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-01-10 00:50:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-01-10 00:50:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2022-01-10 00:50:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-01-10 00:50:42,365 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-01-10 00:50:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:42,366 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-01-10 00:50:42,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 00:50:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-01-10 00:50:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 00:50:42,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:42,366 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:42,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:50:42,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash 263489748, now seen corresponding path program 1 times [2022-01-10 00:50:42,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728680857] [2022-01-10 00:50:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:42,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:42,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:42,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728680857] [2022-01-10 00:50:42,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728680857] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:50:42,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204798972] [2022-01-10 00:50:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:42,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:42,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:42,568 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) [2022-01-10 00:50:42,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:50:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:42,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 00:50:42,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:50:42,726 INFO L353 Elim1Store]: treesize reduction 23, result has 11.5 percent of original size [2022-01-10 00:50:42,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 12 [2022-01-10 00:50:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:42,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:50:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:42,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204798972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:50:42,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:50:42,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 16 [2022-01-10 00:50:42,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382591256] [2022-01-10 00:50:42,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:50:42,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 00:50:42,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 00:50:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-01-10 00:50:42,857 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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) [2022-01-10 00:50:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:43,001 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-01-10 00:50:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 00:50:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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) Word has length 11 [2022-01-10 00:50:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:43,003 INFO L225 Difference]: With dead ends: 21 [2022-01-10 00:50:43,003 INFO L226 Difference]: Without dead ends: 16 [2022-01-10 00:50:43,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-10 00:50:43,004 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:43,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-01-10 00:50:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-10 00:50:43,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-10 00:50:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-01-10 00:50:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-01-10 00:50:43,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2022-01-10 00:50:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:43,009 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-01-10 00:50:43,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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) [2022-01-10 00:50:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-01-10 00:50:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 00:50:43,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:43,010 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:43,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:50:43,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:43,228 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:43,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash -919715042, now seen corresponding path program 2 times [2022-01-10 00:50:43,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:43,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906640383] [2022-01-10 00:50:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:43,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:43,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906640383] [2022-01-10 00:50:43,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906640383] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:50:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425862345] [2022-01-10 00:50:43,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 00:50:43,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:43,370 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) [2022-01-10 00:50:43,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:50:43,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 00:50:43,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 00:50:43,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 00:50:43,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:50:43,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-01-10 00:50:47,707 INFO L353 Elim1Store]: treesize reduction 23, result has 11.5 percent of original size [2022-01-10 00:50:47,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 12 [2022-01-10 00:50:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:47,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:50:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:47,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425862345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:50:47,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:50:47,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-01-10 00:50:47,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475851846] [2022-01-10 00:50:47,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:50:47,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 00:50:47,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 00:50:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2022-01-10 00:50:47,824 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 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) [2022-01-10 00:50:47,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:47,969 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2022-01-10 00:50:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 00:50:47,969 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 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) Word has length 15 [2022-01-10 00:50:47,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:47,970 INFO L225 Difference]: With dead ends: 29 [2022-01-10 00:50:47,970 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 00:50:47,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=248, Invalid=508, Unknown=0, NotChecked=0, Total=756 [2022-01-10 00:50:47,971 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:47,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 28 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-01-10 00:50:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 00:50:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 00:50:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2022-01-10 00:50:47,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-01-10 00:50:47,974 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2022-01-10 00:50:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:47,975 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-01-10 00:50:47,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 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) [2022-01-10 00:50:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-01-10 00:50:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 00:50:47,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:50:47,975 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:50:47,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:50:48,176 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,SelfDestructingSolverStorable3 [2022-01-10 00:50:48,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:50:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:50:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash 607492274, now seen corresponding path program 3 times [2022-01-10 00:50:48,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:50:48,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17281394] [2022-01-10 00:50:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:50:48,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:50:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:50:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:50:48,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:50:48,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17281394] [2022-01-10 00:50:48,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17281394] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:50:48,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930343712] [2022-01-10 00:50:48,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 00:50:48,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:50:48,306 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) [2022-01-10 00:50:48,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:50:48,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 00:50:48,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 00:50:48,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 00:50:48,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:50:48,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-10 00:50:48,689 INFO L353 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2022-01-10 00:50:48,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 34 [2022-01-10 00:50:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 00:50:48,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:50:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 00:50:49,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930343712] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:50:49,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:50:49,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 24 [2022-01-10 00:50:49,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392758047] [2022-01-10 00:50:49,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:50:49,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 00:50:49,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:50:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 00:50:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-01-10 00:50:49,268 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) [2022-01-10 00:50:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:50:50,023 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-01-10 00:50:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 00:50:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) Word has length 23 [2022-01-10 00:50:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:50:50,023 INFO L225 Difference]: With dead ends: 29 [2022-01-10 00:50:50,023 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 00:50:50,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 00:50:50,025 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:50:50,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 9 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 56 Unchecked, 0.0s Time] [2022-01-10 00:50:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 00:50:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 00:50:50,025 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) [2022-01-10 00:50:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 00:50:50,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-01-10 00:50:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:50:50,026 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 00:50:50,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 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) [2022-01-10 00:50:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 00:50:50,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 00:50:50,028 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 00:50:50,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:50:50,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:50:50,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 00:50:50,302 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 00:50:50,302 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 34) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point L23-2(lines 23 34) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L854 garLoopResultBuilder]: At program point L13(lines 11 14) the Hoare annotation is: (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 8) |ULTIMATE.start_main_~#ad1~0#1.offset|)) |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_check_#res#1|)) [2022-01-10 00:50:50,303 INFO L854 garLoopResultBuilder]: At program point L32(lines 17 40) the Hoare annotation is: false [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 30) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 30) the Hoare annotation is: (and (let ((.cse0 (div (+ (* (- 1) |ULTIMATE.start_main_~#ad1~0#1.offset|) |ULTIMATE.start_main_~pa~0#1.offset|) 8))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0#1.base|) (+ |ULTIMATE.start_main_~#ad1~0#1.offset| (* .cse0 8))))) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~#ad1~0#1.base|) (< |ULTIMATE.start_main_~i~0#1| (+ (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) 1)) (= (mod (+ (* 7 |ULTIMATE.start_main_~#ad1~0#1.offset|) |ULTIMATE.start_main_~pa~0#1.offset|) 8) 0) (= |ULTIMATE.start_main_~#ad1~0#1.offset| 0)) [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) no Hoare annotation was computed. [2022-01-10 00:50:50,303 INFO L861 garLoopResultBuilder]: At program point L39(lines 16 40) the Hoare annotation is: true [2022-01-10 00:50:50,306 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-01-10 00:50:50,306 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 00:50:50,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:50:50 BoogieIcfgContainer [2022-01-10 00:50:50,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 00:50:50,319 INFO L158 Benchmark]: Toolchain (without parser) took 8781.56ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 146.1MB in the beginning and 100.7MB in the end (delta: 45.3MB). Peak memory consumption was 110.7MB. Max. memory is 8.0GB. [2022-01-10 00:50:50,319 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 162.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 00:50:50,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.94ms. Allocated memory is still 198.2MB. Free memory was 145.8MB in the beginning and 173.9MB in the end (delta: -28.1MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. [2022-01-10 00:50:50,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.10ms. Allocated memory is still 198.2MB. Free memory was 173.9MB in the beginning and 172.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 00:50:50,320 INFO L158 Benchmark]: Boogie Preprocessor took 27.14ms. Allocated memory is still 198.2MB. Free memory was 172.5MB in the beginning and 171.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 00:50:50,320 INFO L158 Benchmark]: RCFGBuilder took 214.93ms. Allocated memory is still 198.2MB. Free memory was 171.4MB in the beginning and 161.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 00:50:50,320 INFO L158 Benchmark]: TraceAbstraction took 8295.42ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 161.0MB in the beginning and 100.7MB in the end (delta: 60.2MB). Peak memory consumption was 126.2MB. Max. memory is 8.0GB. [2022-01-10 00:50:50,321 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 198.2MB. Free memory is still 162.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.94ms. Allocated memory is still 198.2MB. Free memory was 145.8MB in the beginning and 173.9MB in the end (delta: -28.1MB). Peak memory consumption was 6.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.10ms. Allocated memory is still 198.2MB. Free memory was 173.9MB in the beginning and 172.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.14ms. Allocated memory is still 198.2MB. Free memory was 172.5MB in the beginning and 171.4MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 214.93ms. Allocated memory is still 198.2MB. Free memory was 171.4MB in the beginning and 161.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 8295.42ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 161.0MB in the beginning and 100.7MB in the end (delta: 60.2MB). Peak memory consumption was 126.2MB. 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: 38]: 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 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 118 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 90 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 40 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, InterpolantAutomatonStates: 55, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 65 HoareAnnotationTreeSize, 4 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 464 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 115 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 153 ConstructedInterpolants, 26 QuantifiedInterpolants, 1985 SizeOfPredicates, 32 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 85/210 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: unknown-#memory_int-unknown[ad1][i * 8 + ad1] == i && 1 <= \result - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((-1 * ad1 + pa) / 8 == unknown-#memory_int-unknown[ad1][ad1 + (-1 * ad1 + pa) / 8 * 8] && pa == ad1) && i < unknown-#memory_int-unknown[pa][pa] + 1) && (7 * ad1 + pa) % 8 == 0) && ad1 == 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-01-10 00:50:50,337 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...