/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/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:20:00,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:20:00,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:20:00,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 22:20:00,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 22:20:00,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 22:20:00,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 22:20:00,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 22:20:00,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 22:20:00,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 22:20:00,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 22:20:00,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-01-09 22:20:00,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:20:00,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:20:00,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:20:00,786 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 [2022-01-09 22:20:00,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:20:00,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:20:00,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:20:00,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:20:00,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:20:00,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:20:00,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:20:00,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:20:00,813 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:20:00,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:20:00,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:20:00,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:20:00,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:20:00,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:20:00,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:20:00,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:20:00,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:20:00,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:20:00,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:20:00,816 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:20:00,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:20:00,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:20:00,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:20:00,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:20:01,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:20:01,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:20:01,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:20:01,013 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:20:01,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2022-01-09 22:20:01,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546351b2b/3b57e09ce7d543309cde0881c84f06b9/FLAGef6682604 [2022-01-09 22:20:01,417 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:20:01,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2022-01-09 22:20:01,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546351b2b/3b57e09ce7d543309cde0881c84f06b9/FLAGef6682604 [2022-01-09 22:20:01,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/546351b2b/3b57e09ce7d543309cde0881c84f06b9 [2022-01-09 22:20:01,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:20:01,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:20:01,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:20:01,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:20:01,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:20:01,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:01,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621c3a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:01, skipping insertion in model container [2022-01-09 22:20:01,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:01" (1/1) ... [2022-01-09 22:20:01,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:20:01,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:20:01,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c[318,331] [2022-01-09 22:20:02,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:20:02,103 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:20:02,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c[318,331] [2022-01-09 22:20:02,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:20:02,221 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:20:02,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02 WrapperNode [2022-01-09 22:20:02,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:20:02,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:20:02,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:20:02,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:20:02,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,349 INFO L137 Inliner]: procedures = 18, calls = 2647, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 2821 [2022-01-09 22:20:02,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:20:02,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:20:02,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:20:02,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:20:02,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:20:02,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:20:02,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:20:02,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:20:02,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (1/1) ... [2022-01-09 22:20:02,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:20:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:02,483 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) [2022-01-09 22:20:02,538 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 [2022-01-09 22:20:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:20:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:20:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 22:20:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-01-09 22:20:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-01-09 22:20:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:20:02,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:20:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-01-09 22:20:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 22:20:02,682 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:20:02,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:20:04,579 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:20:04,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:20:04,584 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-09 22:20:04,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:04 BoogieIcfgContainer [2022-01-09 22:20:04,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:20:04,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:20:04,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:20:04,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:20:04,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:20:01" (1/3) ... [2022-01-09 22:20:04,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c1c499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:04, skipping insertion in model container [2022-01-09 22:20:04,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:02" (2/3) ... [2022-01-09 22:20:04,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c1c499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:04, skipping insertion in model container [2022-01-09 22:20:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:04" (3/3) ... [2022-01-09 22:20:04,590 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2022-01-09 22:20:04,593 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:20:04,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:20:04,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:20:04,628 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 [2022-01-09 22:20:04,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:20:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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) [2022-01-09 22:20:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-09 22:20:04,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:04,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:04,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:04,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2022-01-09 22:20:04,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:04,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928053741] [2022-01-09 22:20:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:04,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:05,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:05,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928053741] [2022-01-09 22:20:05,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928053741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:20:05,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:20:05,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 22:20:05,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364615230] [2022-01-09 22:20:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:20:05,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:20:05,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:20:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:20:05,120 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 49 states have internal predecessors, (77), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-01-09 22:20:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:05,155 INFO L93 Difference]: Finished difference Result 102 states and 159 transitions. [2022-01-09 22:20:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 22:20:05,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-01-09 22:20:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:05,162 INFO L225 Difference]: With dead ends: 102 [2022-01-09 22:20:05,162 INFO L226 Difference]: Without dead ends: 17 [2022-01-09 22:20:05,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:20:05,167 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 67 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:05,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-09 22:20:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2022-01-09 22:20:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2022-01-09 22:20:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-01-09 22:20:05,219 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2022-01-09 22:20:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:05,219 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-01-09 22:20:05,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-01-09 22:20:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-01-09 22:20:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-09 22:20:05,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:05,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:05,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:20:05,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:05,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2022-01-09 22:20:05,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:05,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829352561] [2022-01-09 22:20:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:05,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:20:05,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:05,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829352561] [2022-01-09 22:20:05,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829352561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:20:05,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:20:05,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-09 22:20:05,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863055676] [2022-01-09 22:20:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:20:05,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 22:20:05,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:05,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 22:20:05,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 22:20:05,432 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-01-09 22:20:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:05,455 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-01-09 22:20:05,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-09 22:20:05,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2022-01-09 22:20:05,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:05,456 INFO L225 Difference]: With dead ends: 26 [2022-01-09 22:20:05,456 INFO L226 Difference]: Without dead ends: 24 [2022-01-09 22:20:05,457 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 [2022-01-09 22:20:05,457 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:05,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-09 22:20:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2022-01-09 22:20:05,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-01-09 22:20:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-01-09 22:20:05,461 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2022-01-09 22:20:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:05,462 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-01-09 22:20:05,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-01-09 22:20:05,462 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-01-09 22:20:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-09 22:20:05,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:05,462 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:05,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 22:20:05,463 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2121905774, now seen corresponding path program 1 times [2022-01-09 22:20:05,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900816774] [2022-01-09 22:20:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:05,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-09 22:20:05,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900816774] [2022-01-09 22:20:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900816774] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955034788] [2022-01-09 22:20:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:05,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:05,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:05,696 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) [2022-01-09 22:20:05,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:20:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:06,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 5335 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-09 22:20:06,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 22:20:06,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 22:20:06,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955034788] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:06,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:06,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-01-09 22:20:06,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415640706] [2022-01-09 22:20:06,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:06,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-09 22:20:06,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-09 22:20:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:20:06,652 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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) [2022-01-09 22:20:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:06,891 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2022-01-09 22:20:06,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-09 22:20:06,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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 21 [2022-01-09 22:20:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:06,893 INFO L225 Difference]: With dead ends: 84 [2022-01-09 22:20:06,893 INFO L226 Difference]: Without dead ends: 70 [2022-01-09 22:20:06,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2022-01-09 22:20:06,894 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 193 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:06,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 32 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:20:06,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-01-09 22:20:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2022-01-09 22:20:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 67 states have internal predecessors, (83), 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) [2022-01-09 22:20:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2022-01-09 22:20:06,901 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 21 [2022-01-09 22:20:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:06,901 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2022-01-09 22:20:06,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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) [2022-01-09 22:20:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2022-01-09 22:20:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-09 22:20:06,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:06,903 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2022-01-09 22:20:06,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:20:07,103 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 [2022-01-09 22:20:07,104 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -139112542, now seen corresponding path program 1 times [2022-01-09 22:20:07,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178118690] [2022-01-09 22:20:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:07,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 146 proven. 4 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-01-09 22:20:07,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178118690] [2022-01-09 22:20:07,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178118690] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231560776] [2022-01-09 22:20:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:07,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:07,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:07,394 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) [2022-01-09 22:20:07,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:20:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:08,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 5513 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-09 22:20:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-01-09 22:20:08,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:08,372 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-01-09 22:20:08,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231560776] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:08,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:08,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2022-01-09 22:20:08,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338100503] [2022-01-09 22:20:08,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:08,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 22:20:08,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 22:20:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-01-09 22:20:08,375 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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) [2022-01-09 22:20:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:08,618 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2022-01-09 22:20:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-09 22:20:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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 67 [2022-01-09 22:20:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:08,622 INFO L225 Difference]: With dead ends: 205 [2022-01-09 22:20:08,622 INFO L226 Difference]: Without dead ends: 0 [2022-01-09 22:20:08,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=665, Unknown=0, NotChecked=0, Total=992 [2022-01-09 22:20:08,624 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 137 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:08,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 26 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:20:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-09 22:20:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-09 22:20:08,624 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) [2022-01-09 22:20:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-09 22:20:08,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 67 [2022-01-09 22:20:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:08,625 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-09 22:20:08,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 18 states have internal predecessors, (73), 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) [2022-01-09 22:20:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-09 22:20:08,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-09 22:20:08,627 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:20:08,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:20:08,850 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 [2022-01-09 22:20:08,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-09 22:20:09,029 INFO L858 garLoopResultBuilder]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2022-01-09 22:20:09,030 INFO L854 garLoopResultBuilder]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (= 5 |ULTIMATE.start_main_~n~0#1|))) (or (and .cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0)))) [2022-01-09 22:20:09,030 INFO L858 garLoopResultBuilder]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2022-01-09 22:20:09,030 INFO L858 garLoopResultBuilder]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2022-01-09 22:20:09,030 INFO L854 garLoopResultBuilder]: At program point L118-3(lines 118 136) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,030 INFO L858 garLoopResultBuilder]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2022-01-09 22:20:09,030 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-09 22:20:09,030 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-09 22:20:09,030 INFO L854 garLoopResultBuilder]: At program point L153(lines 111 155) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L854 garLoopResultBuilder]: At program point L129-3(lines 129 135) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,031 INFO L854 garLoopResultBuilder]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (= 5 |ULTIMATE.start_main_~n~0#1|))) (or (and .cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 0)))) [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L854 garLoopResultBuilder]: At program point L121-3(lines 121 128) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 81) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2022-01-09 22:20:09,031 INFO L854 garLoopResultBuilder]: At program point L146-3(lines 146 152) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,031 INFO L858 garLoopResultBuilder]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L854 garLoopResultBuilder]: At program point L138-3(lines 138 144) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L854 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (= 5 |ULTIMATE.start_main_~n~0#1|) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L854 garLoopResultBuilder]: At program point L82(lines 76 83) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L99(line 99) no Hoare annotation was computed. [2022-01-09 22:20:09,032 INFO L858 garLoopResultBuilder]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L99-2(line 99) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L854 garLoopResultBuilder]: At program point L132-3(lines 132 133) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L854 garLoopResultBuilder]: At program point L149-3(lines 149 150) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L854 garLoopResultBuilder]: At program point L108(lines 85 109) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2022-01-09 22:20:09,033 INFO L854 garLoopResultBuilder]: At program point L141-3(lines 141 142) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,033 INFO L858 garLoopResultBuilder]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2022-01-09 22:20:09,034 INFO L858 garLoopResultBuilder]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2022-01-09 22:20:09,034 INFO L854 garLoopResultBuilder]: At program point L125-3(lines 125 126) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~n~0#1| (- 5)) 0) [2022-01-09 22:20:09,034 INFO L858 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2022-01-09 22:20:09,037 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-09 22:20:09,038 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:20:09,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:20:09 BoogieIcfgContainer [2022-01-09 22:20:09,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:20:09,058 INFO L158 Benchmark]: Toolchain (without parser) took 7205.83ms. Allocated memory was 206.6MB in the beginning and 484.4MB in the end (delta: 277.9MB). Free memory was 152.2MB in the beginning and 270.3MB in the end (delta: -118.1MB). Peak memory consumption was 160.0MB. Max. memory is 8.0GB. [2022-01-09 22:20:09,058 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 168.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:20:09,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.81ms. Allocated memory was 206.6MB in the beginning and 248.5MB in the end (delta: 41.9MB). Free memory was 152.0MB in the beginning and 190.2MB in the end (delta: -38.2MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. [2022-01-09 22:20:09,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 127.75ms. Allocated memory is still 248.5MB. Free memory was 190.2MB in the beginning and 167.7MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-01-09 22:20:09,059 INFO L158 Benchmark]: Boogie Preprocessor took 92.11ms. Allocated memory is still 248.5MB. Free memory was 167.7MB in the beginning and 152.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-01-09 22:20:09,059 INFO L158 Benchmark]: RCFGBuilder took 2141.37ms. Allocated memory was 248.5MB in the beginning and 366.0MB in the end (delta: 117.4MB). Free memory was 151.9MB in the beginning and 167.2MB in the end (delta: -15.2MB). Peak memory consumption was 112.8MB. Max. memory is 8.0GB. [2022-01-09 22:20:09,060 INFO L158 Benchmark]: TraceAbstraction took 4471.72ms. Allocated memory was 366.0MB in the beginning and 484.4MB in the end (delta: 118.5MB). Free memory was 166.6MB in the beginning and 270.3MB in the end (delta: -103.7MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-01-09 22:20:09,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 168.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 366.81ms. Allocated memory was 206.6MB in the beginning and 248.5MB in the end (delta: 41.9MB). Free memory was 152.0MB in the beginning and 190.2MB in the end (delta: -38.2MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 127.75ms. Allocated memory is still 248.5MB. Free memory was 190.2MB in the beginning and 167.7MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 92.11ms. Allocated memory is still 248.5MB. Free memory was 167.7MB in the beginning and 152.5MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2141.37ms. Allocated memory was 248.5MB in the beginning and 366.0MB in the end (delta: 117.4MB). Free memory was 151.9MB in the beginning and 167.2MB in the end (delta: -15.2MB). Peak memory consumption was 112.8MB. Max. memory is 8.0GB. * TraceAbstraction took 4471.72ms. Allocated memory was 366.0MB in the beginning and 484.4MB in the end (delta: 118.5MB). Free memory was 166.6MB in the beginning and 270.3MB in the end (delta: -103.7MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: 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, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 412 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 412 mSDsluCounter, 200 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243 IncrementalHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 82 mSDtfsCounter, 243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=3, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 68 NumberOfFragments, 106 HoareAnnotationTreeSize, 15 FomulaSimplifications, 450 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 580 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 274 ConstructedInterpolants, 0 QuantifiedInterpolants, 885 SizeOfPredicates, 4 NumberOfNonLiveVariables, 10848 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 907/979 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: 5]: Loop Invariant Derived loop invariant: (5 == n && !(cond == 0)) && i <= n - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: (5 == n && !(cond == 0)) || (5 == n && i == 0) - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: ((5 == n && !(cond == 0)) && i <= n) || (5 == n && i == 0) - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: n + -5 == 0 - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: n + -5 == 0 RESULT: Ultimate proved your program to be correct! [2022-01-09 22:20:09,100 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...