/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/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:18:22,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:18:22,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:18:22,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:18:22,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 22:18:22,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 22:18:22,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 22:18:22,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 22:18:22,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 22:18:22,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 22:18:22,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 22:18:22,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 22:18:22,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 22:18:22,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 22:18:22,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 22:18:22,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 22:18:22,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 22:18:22,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:18:22,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:18:22,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:18:22,449 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 22:18:22,461 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:18:22,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:18:22,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:18:22,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:18:22,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:18:22,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:18:22,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:18:22,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:18:22,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:18:22,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:18:22,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:18:22,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:18:22,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:18:22,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:18:22,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:18:22,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:18:22,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:18:22,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:18:22,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:18:22,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:18:22,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:18:22,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:18:22,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:18:22,670 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:18:22,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2022-01-09 22:18:22,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c2a853b/a5ac2f6b21b243b88bc59c9889f683db/FLAGc408fb3aa [2022-01-09 22:18:23,077 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:18:23,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2022-01-09 22:18:23,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c2a853b/a5ac2f6b21b243b88bc59c9889f683db/FLAGc408fb3aa [2022-01-09 22:18:23,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70c2a853b/a5ac2f6b21b243b88bc59c9889f683db [2022-01-09 22:18:23,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:18:23,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:18:23,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:18:23,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:18:23,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:18:23,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a219b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23, skipping insertion in model container [2022-01-09 22:18:23,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:18:23,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:18:23,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c[755,768] [2022-01-09 22:18:23,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:18:23,707 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:18:23,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c[755,768] [2022-01-09 22:18:23,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:18:23,745 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:18:23,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23 WrapperNode [2022-01-09 22:18:23,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:18:23,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:18:23,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:18:23,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:18:23,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,765 INFO L137 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-01-09 22:18:23,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:18:23,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:18:23,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:18:23,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:18:23,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:18:23,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:18:23,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:18:23,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:18:23,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (1/1) ... [2022-01-09 22:18:23,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:18:23,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:18:23,820 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 22:18:23,837 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 22:18:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:18:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:18:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-01-09 22:18:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-01-09 22:18:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:18:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:18:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-01-09 22:18:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-01-09 22:18:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:18:23,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:18:23,896 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:18:23,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:18:24,098 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:18:24,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:18:24,103 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 22:18:24,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:18:24 BoogieIcfgContainer [2022-01-09 22:18:24,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:18:24,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:18:24,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:18:24,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:18:24,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:18:23" (1/3) ... [2022-01-09 22:18:24,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3280929b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:18:24, skipping insertion in model container [2022-01-09 22:18:24,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:18:23" (2/3) ... [2022-01-09 22:18:24,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3280929b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:18:24, skipping insertion in model container [2022-01-09 22:18:24,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:18:24" (3/3) ... [2022-01-09 22:18:24,110 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2022-01-09 22:18:24,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:18:24,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:18:24,159 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:18:24,163 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 22:18:24,163 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:18:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-01-09 22:18:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-09 22:18:24,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:24,210 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:18:24,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2030319843, now seen corresponding path program 1 times [2022-01-09 22:18:24,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:24,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122495381] [2022-01-09 22:18:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:24,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:24,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:24,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122495381] [2022-01-09 22:18:24,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122495381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:18:24,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849271971] [2022-01-09 22:18:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:24,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:18:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:18:24,549 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 22:18:24,550 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 22:18:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:24,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-09 22:18:24,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:18:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:18:24,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:18:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:24,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849271971] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:18:24,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:18:24,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 18 [2022-01-09 22:18:24,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806373761] [2022-01-09 22:18:24,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:18:24,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 22:18:24,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:24,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 22:18:24,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-01-09 22:18:24,888 INFO L87 Difference]: Start difference. First operand has 54 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-09 22:18:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:25,267 INFO L93 Difference]: Finished difference Result 153 states and 235 transitions. [2022-01-09 22:18:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-09 22:18:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2022-01-09 22:18:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:25,275 INFO L225 Difference]: With dead ends: 153 [2022-01-09 22:18:25,276 INFO L226 Difference]: Without dead ends: 94 [2022-01-09 22:18:25,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-01-09 22:18:25,281 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 51 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:25,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1222 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 22:18:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-01-09 22:18:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 68. [2022-01-09 22:18:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 53 states have internal predecessors, (66), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-01-09 22:18:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 91 transitions. [2022-01-09 22:18:25,311 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 91 transitions. Word has length 31 [2022-01-09 22:18:25,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:25,312 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 91 transitions. [2022-01-09 22:18:25,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 14 states have internal predecessors, (30), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-01-09 22:18:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 91 transitions. [2022-01-09 22:18:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-09 22:18:25,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:25,314 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:18:25,332 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 22:18:25,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-09 22:18:25,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 565485640, now seen corresponding path program 1 times [2022-01-09 22:18:25,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:25,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272074629] [2022-01-09 22:18:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:25,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-09 22:18:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:25,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:25,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272074629] [2022-01-09 22:18:25,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272074629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:25,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:25,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-09 22:18:25,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063481496] [2022-01-09 22:18:25,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:25,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-09 22:18:25,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:25,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-09 22:18:25,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-09 22:18:25,625 INFO L87 Difference]: Start difference. First operand 68 states and 91 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-09 22:18:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:25,666 INFO L93 Difference]: Finished difference Result 123 states and 161 transitions. [2022-01-09 22:18:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-09 22:18:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-01-09 22:18:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:25,669 INFO L225 Difference]: With dead ends: 123 [2022-01-09 22:18:25,669 INFO L226 Difference]: Without dead ends: 91 [2022-01-09 22:18:25,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-09 22:18:25,670 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 18 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:25,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 431 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:18:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-09 22:18:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2022-01-09 22:18:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.263157894736842) internal successors, (72), 59 states have internal predecessors, (72), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-09 22:18:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2022-01-09 22:18:25,679 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 35 [2022-01-09 22:18:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:25,679 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2022-01-09 22:18:25,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-09 22:18:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2022-01-09 22:18:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-09 22:18:25,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:25,681 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:18:25,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 22:18:25,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:25,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash -686479404, now seen corresponding path program 1 times [2022-01-09 22:18:25,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:25,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311138488] [2022-01-09 22:18:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:25,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-09 22:18:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:25,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:25,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311138488] [2022-01-09 22:18:25,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311138488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:18:25,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:18:25,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-09 22:18:25,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725463831] [2022-01-09 22:18:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:18:25,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-09 22:18:25,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-09 22:18:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-09 22:18:25,764 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 22:18:25,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:25,837 INFO L93 Difference]: Finished difference Result 125 states and 164 transitions. [2022-01-09 22:18:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-09 22:18:25,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-01-09 22:18:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:25,840 INFO L225 Difference]: With dead ends: 125 [2022-01-09 22:18:25,840 INFO L226 Difference]: Without dead ends: 102 [2022-01-09 22:18:25,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-09 22:18:25,841 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 45 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:25,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 526 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:18:25,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-09 22:18:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2022-01-09 22:18:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 73 states have internal predecessors, (91), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2022-01-09 22:18:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2022-01-09 22:18:25,850 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 39 [2022-01-09 22:18:25,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:25,850 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2022-01-09 22:18:25,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-09 22:18:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2022-01-09 22:18:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-09 22:18:25,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:25,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:18:25,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 22:18:25,852 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -629221102, now seen corresponding path program 1 times [2022-01-09 22:18:25,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965105080] [2022-01-09 22:18:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:25,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:18:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-01-09 22:18:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:18:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-01-09 22:18:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:25,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:18:25,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965105080] [2022-01-09 22:18:25,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965105080] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:18:25,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845177074] [2022-01-09 22:18:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:25,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:18:25,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:18:25,996 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 22:18:26,000 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 22:18:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:18:26,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-09 22:18:26,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:18:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:18:26,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:18:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-09 22:18:26,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845177074] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:18:26,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:18:26,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 16 [2022-01-09 22:18:26,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704290360] [2022-01-09 22:18:26,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:18:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-09 22:18:26,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:18:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-09 22:18:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-01-09 22:18:26,292 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-09 22:18:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:18:26,488 INFO L93 Difference]: Finished difference Result 172 states and 229 transitions. [2022-01-09 22:18:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-09 22:18:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2022-01-09 22:18:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:18:26,489 INFO L225 Difference]: With dead ends: 172 [2022-01-09 22:18:26,489 INFO L226 Difference]: Without dead ends: 135 [2022-01-09 22:18:26,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-01-09 22:18:26,490 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 46 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:18:26,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 816 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:18:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-01-09 22:18:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 104. [2022-01-09 22:18:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 80 states have internal predecessors, (98), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (21), 15 states have call predecessors, (21), 15 states have call successors, (21) [2022-01-09 22:18:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2022-01-09 22:18:26,500 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 39 [2022-01-09 22:18:26,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:18:26,500 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2022-01-09 22:18:26,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 12 states have internal predecessors, (37), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-09 22:18:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2022-01-09 22:18:26,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-09 22:18:26,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:18:26,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:18:26,525 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 22:18:26,715 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 22:18:26,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:18:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:18:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash 461161469, now seen corresponding path program 2 times [2022-01-09 22:18:26,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:18:26,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836793257] [2022-01-09 22:18:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:18:26,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:18:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:18:26,732 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-09 22:18:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-09 22:18:26,772 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-09 22:18:26,772 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-09 22:18:26,773 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 22:18:26,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 22:18:26,776 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-01-09 22:18:26,777 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-09 22:18:26,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:18:26 BoogieIcfgContainer [2022-01-09 22:18:26,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-09 22:18:26,814 INFO L158 Benchmark]: Toolchain (without parser) took 3322.67ms. Allocated memory was 255.9MB in the beginning and 401.6MB in the end (delta: 145.8MB). Free memory was 199.0MB in the beginning and 184.6MB in the end (delta: 14.3MB). Peak memory consumption was 159.8MB. Max. memory is 8.0GB. [2022-01-09 22:18:26,814 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 215.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:18:26,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.61ms. Allocated memory was 255.9MB in the beginning and 401.6MB in the end (delta: 145.8MB). Free memory was 198.8MB in the beginning and 370.2MB in the end (delta: -171.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-01-09 22:18:26,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.87ms. Allocated memory is still 401.6MB. Free memory was 370.2MB in the beginning and 368.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:18:26,815 INFO L158 Benchmark]: Boogie Preprocessor took 14.39ms. Allocated memory is still 401.6MB. Free memory was 368.7MB in the beginning and 367.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 22:18:26,815 INFO L158 Benchmark]: RCFGBuilder took 323.60ms. Allocated memory is still 401.6MB. Free memory was 367.1MB in the beginning and 353.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-01-09 22:18:26,815 INFO L158 Benchmark]: TraceAbstraction took 2708.18ms. Allocated memory is still 401.6MB. Free memory was 352.9MB in the beginning and 184.6MB in the end (delta: 168.3MB). Peak memory consumption was 168.8MB. Max. memory is 8.0GB. [2022-01-09 22:18:26,816 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 255.9MB. Free memory is still 215.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.61ms. Allocated memory was 255.9MB in the beginning and 401.6MB in the end (delta: 145.8MB). Free memory was 198.8MB in the beginning and 370.2MB in the end (delta: -171.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.87ms. Allocated memory is still 401.6MB. Free memory was 370.2MB in the beginning and 368.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.39ms. Allocated memory is still 401.6MB. Free memory was 368.7MB in the beginning and 367.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 323.60ms. Allocated memory is still 401.6MB. Free memory was 367.1MB in the beginning and 353.5MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2708.18ms. Allocated memory is still 401.6MB. Free memory was 352.9MB in the beginning and 184.6MB in the end (delta: 168.3MB). Peak memory consumption was 168.8MB. 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: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add1 ; [L234] unsigned int r_add2 ; [L235] unsigned int zero ; [L236] int tmp ; [L237] int tmp___0 ; [L238] int __retres14 ; VAL [ea=0, eb=0] [L242] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L242] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L242] zero = base2flt(0, 0) [L243] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int )(e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=4278190080, e=0, res=4278190080] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=72057594021150720, __retres4=4278190080, e=0, res=4278190080] [L243] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=72057594021150720, ea=0, eb=0, ma=16777216, zero=0] [L243] a = base2flt(ma, ea) [L244] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int )(e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=4294967295, e=0, res=4294967295] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=72057589742960639, __retres4=4294967295, e=0, res=4294967295] [L244] RET, EXPR base2flt(mb, eb) VAL [a=4278190080, base2flt(mb, eb)=72057589742960639, ea=0, eb=0, ma=16777216, mb=16777216, zero=0] [L244] b = base2flt(mb, eb) [L245] CALL addflt(a, b) VAL [\old(a)=4278190080, \old(b)=4294967295] [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=4278190080, \old(b)=4294967295, a=4278190080, b=4294967295] [L95] COND TRUE a < b [L96] tmp = a [L97] a = b [L98] b = tmp VAL [\old(a)=4278190080, \old(b)=4294967295, a=4294967295, b=4278190080, tmp=4278190080] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) [L113] eb = (int )(b >> 24U) - 128 [L114] mb = mb | (1U << 24U) VAL [\old(a)=4278190080, \old(b)=4294967295, a=4294967295, b=4278190080, ea=-385, eb=-129, tmp=4278190080] [L115] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 2995 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2719 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 808 IncrementalHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 276 mSDtfsCounter, 808 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=4, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 80 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 586 SizeOfPredicates, 9 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 98/132 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-09 22:18:26,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...