/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 12:31:48,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 12:31:48,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 12:31:48,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 12:31:48,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 12:31:48,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 12:31:48,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 12:31:48,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 12:31:48,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 12:31:48,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 12:31:48,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 12:31:48,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 12:31:48,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 12:31:48,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 12:31:48,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 12:31:48,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 12:31:48,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 12:31:48,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 12:31:48,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 12:31:48,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 12:31:48,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 12:31:48,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 12:31:48,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 12:31:48,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 12:31:48,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 12:31:48,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 12:31:48,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 12:31:48,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 12:31:48,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 12:31:48,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 12:31:48,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 12:31:48,227 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 12:31:48,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 12:31:48,227 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 12:31:48,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 12:31:48,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 12:31:48,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 12:31:48,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 12:31:48,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 12:31:48,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:31:48,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 12:31:48,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 12:31:48,229 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 12:31:48,229 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 12:31:48,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 12:31:48,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 12:31:48,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 12:31:48,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 12:31:48,451 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 12:31:48,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2022-01-31 12:31:48,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eec9851b/60a2c38b9eca4ee38f05e4bf7975cf4e/FLAGf65e6f22d [2022-01-31 12:31:48,927 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 12:31:48,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2022-01-31 12:31:48,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eec9851b/60a2c38b9eca4ee38f05e4bf7975cf4e/FLAGf65e6f22d [2022-01-31 12:31:48,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eec9851b/60a2c38b9eca4ee38f05e4bf7975cf4e [2022-01-31 12:31:48,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 12:31:48,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 12:31:48,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 12:31:48,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 12:31:48,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 12:31:48,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:31:48" (1/1) ... [2022-01-31 12:31:48,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f57125f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:48, skipping insertion in model container [2022-01-31 12:31:48,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:31:48" (1/1) ... [2022-01-31 12:31:48,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 12:31:48,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 12:31:49,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2022-01-31 12:31:49,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:31:49,168 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 12:31:49,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2022-01-31 12:31:49,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:31:49,194 INFO L208 MainTranslator]: Completed translation [2022-01-31 12:31:49,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49 WrapperNode [2022-01-31 12:31:49,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 12:31:49,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 12:31:49,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 12:31:49,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 12:31:49,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 12:31:49,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 12:31:49,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 12:31:49,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 12:31:49,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:31:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:31:49,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 12:31:49,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 12:31:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 12:31:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 12:31:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 12:31:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 12:31:49,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 12:31:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 12:31:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 12:31:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 12:31:49,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 12:31:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 12:31:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 12:31:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 12:31:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 12:31:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 12:31:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 12:31:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 12:31:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 12:31:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 12:31:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 12:31:49,394 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 12:31:49,395 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 12:31:49,514 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 12:31:49,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 12:31:49,518 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 12:31:49,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:31:49 BoogieIcfgContainer [2022-01-31 12:31:49,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 12:31:49,519 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 12:31:49,519 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 12:31:49,530 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 12:31:49,533 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:31:49" (1/1) ... [2022-01-31 12:31:49,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:31:49 BasicIcfg [2022-01-31 12:31:49,542 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 12:31:49,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 12:31:49,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 12:31:49,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 12:31:49,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 12:31:48" (1/4) ... [2022-01-31 12:31:49,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f0c9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:31:49, skipping insertion in model container [2022-01-31 12:31:49,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:31:49" (2/4) ... [2022-01-31 12:31:49,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f0c9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:31:49, skipping insertion in model container [2022-01-31 12:31:49,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:31:49" (3/4) ... [2022-01-31 12:31:49,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f0c9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:31:49, skipping insertion in model container [2022-01-31 12:31:49,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:31:49" (4/4) ... [2022-01-31 12:31:49,546 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.cJordan [2022-01-31 12:31:49,549 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 12:31:49,549 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 12:31:49,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 12:31:49,603 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 12:31:49,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 12:31:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:31:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-31 12:31:49,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:31:49,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:31:49,616 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:31:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:31:49,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1405451419, now seen corresponding path program 1 times [2022-01-31 12:31:49,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:31:49,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655356360] [2022-01-31 12:31:49,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:49,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:31:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:31:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:49,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:31:49,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655356360] [2022-01-31 12:31:49,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655356360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:31:49,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:31:49,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 12:31:49,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592021120] [2022-01-31 12:31:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:31:49,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 12:31:49,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:31:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 12:31:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 12:31:49,859 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:31:49,996 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-01-31 12:31:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 12:31:49,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-01-31 12:31:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:31:50,001 INFO L225 Difference]: With dead ends: 27 [2022-01-31 12:31:50,001 INFO L226 Difference]: Without dead ends: 16 [2022-01-31 12:31:50,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 12:31:50,006 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 12:31:50,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 54 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 12:31:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-01-31 12:31:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-01-31 12:31:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-01-31 12:31:50,030 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2022-01-31 12:31:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:31:50,030 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-01-31 12:31:50,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-01-31 12:31:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 12:31:50,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:31:50,031 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:31:50,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 12:31:50,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:31:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:31:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2020096506, now seen corresponding path program 1 times [2022-01-31 12:31:50,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:31:50,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713554642] [2022-01-31 12:31:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:50,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:31:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:31:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:50,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:31:50,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713554642] [2022-01-31 12:31:50,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713554642] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:31:50,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443832532] [2022-01-31 12:31:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:31:50,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:31:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:31:50,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:31:50,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 12:31:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:31:50,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 12:31:50,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:31:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:50,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:31:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:31:50,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443832532] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 12:31:50,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:31:50,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-01-31 12:31:50,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210285370] [2022-01-31 12:31:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:31:50,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 12:31:50,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:31:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 12:31:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-31 12:31:50,339 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:31:50,365 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-01-31 12:31:50,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 12:31:50,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 12:31:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:31:50,365 INFO L225 Difference]: With dead ends: 14 [2022-01-31 12:31:50,365 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 12:31:50,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-01-31 12:31:50,367 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:31:50,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 12:31:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 12:31:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 12:31:50,368 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) [2022-01-31 12:31:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 12:31:50,368 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-01-31 12:31:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:31:50,368 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 12:31:50,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:31:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 12:31:50,368 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 12:31:50,370 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 12:31:50,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 12:31:50,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:31:50,586 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 12:31:50,587 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 12:31:50,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:31:50 BasicIcfg [2022-01-31 12:31:50,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 12:31:50,590 INFO L158 Benchmark]: Toolchain (without parser) took 1631.77ms. Allocated memory is still 174.1MB. Free memory was 119.4MB in the beginning and 75.8MB in the end (delta: 43.6MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2022-01-31 12:31:50,591 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 12:31:50,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.79ms. Allocated memory is still 174.1MB. Free memory was 119.1MB in the beginning and 145.1MB in the end (delta: -26.0MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-01-31 12:31:50,591 INFO L158 Benchmark]: Boogie Preprocessor took 34.24ms. Allocated memory is still 174.1MB. Free memory was 145.1MB in the beginning and 143.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 12:31:50,592 INFO L158 Benchmark]: RCFGBuilder took 288.43ms. Allocated memory is still 174.1MB. Free memory was 143.7MB in the beginning and 133.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 12:31:50,592 INFO L158 Benchmark]: IcfgTransformer took 22.43ms. Allocated memory is still 174.1MB. Free memory was 133.5MB in the beginning and 132.6MB in the end (delta: 896.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 12:31:50,593 INFO L158 Benchmark]: TraceAbstraction took 1047.19ms. Allocated memory is still 174.1MB. Free memory was 132.1MB in the beginning and 75.8MB in the end (delta: 56.3MB). Peak memory consumption was 56.6MB. Max. memory is 8.0GB. [2022-01-31 12:31:50,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 232.79ms. Allocated memory is still 174.1MB. Free memory was 119.1MB in the beginning and 145.1MB in the end (delta: -26.0MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.24ms. Allocated memory is still 174.1MB. Free memory was 145.1MB in the beginning and 143.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 288.43ms. Allocated memory is still 174.1MB. Free memory was 143.7MB in the beginning and 133.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 22.43ms. Allocated memory is still 174.1MB. Free memory was 133.5MB in the beginning and 132.6MB in the end (delta: 896.4kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1047.19ms. Allocated memory is still 174.1MB. Free memory was 132.1MB in the beginning and 75.8MB in the end (delta: 56.3MB). Peak memory consumption was 56.6MB. 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: 57]: 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 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 59 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 25 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 4 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 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 RESULT: Ultimate proved your program to be correct! [2022-01-31 12:31:50,624 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...