/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/array-programs/partial_mod_count_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:10:32,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:10:32,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:10:33,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:10:33,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:10:33,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:10:33,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:10:33,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:10:33,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:10:33,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:10:33,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:10:33,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:10:33,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:10:33,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:10:33,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:10:33,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:10:33,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:10:33,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:10:33,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:10:33,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:10:33,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 19:10:33,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:10:33,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:10:33,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:10:33,104 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:10:33,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:10:33,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:10:33,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:10:33,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:10:33,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:10:33,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:10:33,106 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:10:33,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:10:33,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:10:33,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:10:33,286 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:10:33,288 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:10:33,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_5.c [2022-01-31 19:10:33,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2008576ef/7c36c4942140400cb3052a327507b067/FLAG0fbd5c36b [2022-01-31 19:10:33,666 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:10:33,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_5.c [2022-01-31 19:10:33,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2008576ef/7c36c4942140400cb3052a327507b067/FLAG0fbd5c36b [2022-01-31 19:10:33,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2008576ef/7c36c4942140400cb3052a327507b067 [2022-01-31 19:10:33,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:10:33,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:10:33,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:10:33,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:10:33,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:10:33,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c1e5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33, skipping insertion in model container [2022-01-31 19:10:33,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:10:33,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:10:33,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_5.c[323,336] [2022-01-31 19:10:33,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:10:33,889 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:10:33,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_5.c[323,336] [2022-01-31 19:10:33,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:10:33,914 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:10:33,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33 WrapperNode [2022-01-31 19:10:33,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:10:33,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:10:33,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:10:33,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:10:33,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:10:33,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:10:33,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:10:33,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:10:33,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (1/1) ... [2022-01-31 19:10:33,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:10:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:10:33,962 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 19:10:33,969 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 19:10:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:10:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:10:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:10:33,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 19:10:33,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:10:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:10:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:10:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:10:34,040 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:10:34,041 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:10:34,185 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:10:34,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:10:34,189 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 19:10:34,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:10:34 BoogieIcfgContainer [2022-01-31 19:10:34,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:10:34,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:10:34,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:10:34,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:10:34,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:10:33" (1/3) ... [2022-01-31 19:10:34,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a1ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:10:34, skipping insertion in model container [2022-01-31 19:10:34,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:33" (2/3) ... [2022-01-31 19:10:34,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a1ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:10:34, skipping insertion in model container [2022-01-31 19:10:34,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:10:34" (3/3) ... [2022-01-31 19:10:34,199 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_5.c [2022-01-31 19:10:34,203 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:10:34,204 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:10:34,232 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:10:34,239 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 19:10:34,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:10:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:10:34,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 19:10:34,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:34,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:34,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2056044129, now seen corresponding path program 1 times [2022-01-31 19:10:34,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:34,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414092865] [2022-01-31 19:10:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:34,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:34,327 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:34,458 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 19:10:34,459 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:34,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414092865] [2022-01-31 19:10:34,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [414092865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:34,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:34,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:10:34,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337813624] [2022-01-31 19:10:34,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:34,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:10:34,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:10:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:10:34,500 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:10:34,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:34,537 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-01-31 19:10:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:10:34,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 19:10:34,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:34,542 INFO L225 Difference]: With dead ends: 41 [2022-01-31 19:10:34,543 INFO L226 Difference]: Without dead ends: 20 [2022-01-31 19:10:34,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:10:34,547 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:34,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:10:34,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-31 19:10:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-01-31 19:10:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-01-31 19:10:34,583 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-01-31 19:10:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:34,584 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-01-31 19:10:34,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:10:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-01-31 19:10:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 19:10:34,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:34,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:34,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:10:34,586 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash 247878666, now seen corresponding path program 1 times [2022-01-31 19:10:34,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:34,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999663968] [2022-01-31 19:10:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:34,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:34,593 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:34,684 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 19:10:34,684 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:34,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999663968] [2022-01-31 19:10:34,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [999663968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:34,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:34,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 19:10:34,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236345744] [2022-01-31 19:10:34,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:34,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:10:34,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:34,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:10:34,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:10:34,687 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:10:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:34,801 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-01-31 19:10:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 19:10:34,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-01-31 19:10:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:34,804 INFO L225 Difference]: With dead ends: 41 [2022-01-31 19:10:34,805 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 19:10:34,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:10:34,810 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:34,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 17 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:10:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 19:10:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-01-31 19:10:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-31 19:10:34,830 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2022-01-31 19:10:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:34,830 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-31 19:10:34,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:10:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-31 19:10:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 19:10:34,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:34,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:34,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:10:34,832 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -417153840, now seen corresponding path program 1 times [2022-01-31 19:10:34,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:34,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944674507] [2022-01-31 19:10:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:34,853 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:34,853 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:34,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:34,856 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:34,938 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 19:10:34,938 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:34,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944674507] [2022-01-31 19:10:34,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1944674507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:34,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:34,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:10:34,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491742658] [2022-01-31 19:10:34,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:34,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:10:34,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:10:34,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:10:34,940 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:10:35,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:35,064 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-01-31 19:10:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 19:10:35,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-01-31 19:10:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:35,065 INFO L225 Difference]: With dead ends: 45 [2022-01-31 19:10:35,065 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 19:10:35,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:10:35,066 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 68 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:35,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 18 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:10:35,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 19:10:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2022-01-31 19:10:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-31 19:10:35,076 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 17 [2022-01-31 19:10:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:35,076 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-31 19:10:35,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 19:10:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-31 19:10:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 19:10:35,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:35,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:35,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:10:35,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash 676623372, now seen corresponding path program 1 times [2022-01-31 19:10:35,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:35,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107272676] [2022-01-31 19:10:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:35,088 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:35,089 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:35,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:35,090 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:35,104 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 19:10:35,104 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 19:10:35,111 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 19:10:35,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:10:35,115 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-31 19:10:35,116 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 19:10:35,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 07:10:35 BoogieIcfgContainer [2022-01-31 19:10:35,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 19:10:35,127 INFO L158 Benchmark]: Toolchain (without parser) took 1427.02ms. Allocated memory is still 198.2MB. Free memory was 150.4MB in the beginning and 108.2MB in the end (delta: 42.2MB). Peak memory consumption was 41.4MB. Max. memory is 8.0GB. [2022-01-31 19:10:35,127 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 198.2MB. Free memory is still 166.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 19:10:35,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.47ms. Allocated memory is still 198.2MB. Free memory was 150.1MB in the beginning and 176.4MB in the end (delta: -26.3MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-01-31 19:10:35,128 INFO L158 Benchmark]: Boogie Preprocessor took 21.45ms. Allocated memory is still 198.2MB. Free memory was 176.4MB in the beginning and 174.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 19:10:35,128 INFO L158 Benchmark]: RCFGBuilder took 252.25ms. Allocated memory is still 198.2MB. Free memory was 174.8MB in the beginning and 163.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 19:10:35,128 INFO L158 Benchmark]: TraceAbstraction took 935.32ms. Allocated memory is still 198.2MB. Free memory was 163.3MB in the beginning and 108.2MB in the end (delta: 55.0MB). Peak memory consumption was 54.5MB. Max. memory is 8.0GB. [2022-01-31 19:10:35,129 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 166.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 212.47ms. Allocated memory is still 198.2MB. Free memory was 150.1MB in the beginning and 176.4MB in the end (delta: -26.3MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.45ms. Allocated memory is still 198.2MB. Free memory was 176.4MB in the beginning and 174.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 252.25ms. Allocated memory is still 198.2MB. Free memory was 174.8MB in the beginning and 163.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 935.32ms. Allocated memory is still 198.2MB. Free memory was 163.3MB in the beginning and 108.2MB in the end (delta: 55.0MB). Peak memory consumption was 54.5MB. 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L6] int N = 1000000; [L8] int i,j=0,a[N]; [L9] unsigned int R=5; [L10] i=0 [L10] COND TRUE iN/2) [L10] i++ [L10] COND TRUE iN/2 [L13] a[i]=i%R [L10] i++ [L10] COND FALSE !(i