/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_1b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 10:38:35,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 10:38:35,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 10:38:35,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 10:38:35,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 10:38:35,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 10:38:35,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 10:38:35,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 10:38:35,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 10:38:35,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 10:38:35,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 10:38:35,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 10:38:35,078 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 10:38:35,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 10:38:35,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 10:38:35,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 10:38:35,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 10:38:35,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 10:38:35,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 10:38:35,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 10:38:35,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 10:38:35,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 10:38:35,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 10:38:35,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 10:38:35,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 10:38:35,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 10:38:35,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 10:38:35,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 10:38:35,136 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 10:38:35,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 10:38:35,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 10:38:35,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 10:38:35,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 10:38:35,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 10:38:35,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 10:38:35,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 10:38:35,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 10:38:35,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 10:38:35,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 10:38:35,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 10:38:35,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 10:38:35,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 10:38:35,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 10:38:35,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 10:38:35,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 10:38:35,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 10:38:35,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 10:38:35,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 10:38:35,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 10:38:35,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 10:38:35,140 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 10:38:35,141 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 10:38:35,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 10:38:35,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 10:38:35,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 10:38:35,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 10:38:35,428 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 10:38:35,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_1b.c [2022-04-06 10:38:35,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53db15709/010cfc02b06b41b6b746dee9b2d81588/FLAG499253a3a [2022-04-06 10:38:35,900 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 10:38:35,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_1b.c [2022-04-06 10:38:35,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53db15709/010cfc02b06b41b6b746dee9b2d81588/FLAG499253a3a [2022-04-06 10:38:36,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53db15709/010cfc02b06b41b6b746dee9b2d81588 [2022-04-06 10:38:36,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 10:38:36,311 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 10:38:36,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 10:38:36,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 10:38:36,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 10:38:36,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b76ad79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36, skipping insertion in model container [2022-04-06 10:38:36,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 10:38:36,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 10:38:36,494 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-simple/nested_1b.c[674,687] [2022-04-06 10:38:36,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 10:38:36,505 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 10:38:36,516 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-simple/nested_1b.c[674,687] [2022-04-06 10:38:36,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 10:38:36,527 INFO L208 MainTranslator]: Completed translation [2022-04-06 10:38:36,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36 WrapperNode [2022-04-06 10:38:36,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 10:38:36,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 10:38:36,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 10:38:36,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 10:38:36,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 10:38:36,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 10:38:36,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 10:38:36,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 10:38:36,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 10:38:36,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:38:36,581 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) [2022-04-06 10:38:36,593 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 [2022-04-06 10:38:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 10:38:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 10:38:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 10:38:36,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 10:38:36,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 10:38:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 10:38:36,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 10:38:36,670 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 10:38:36,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 10:38:36,774 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 10:38:36,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 10:38:36,779 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 10:38:36,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:38:36 BoogieIcfgContainer [2022-04-06 10:38:36,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 10:38:36,781 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 10:38:36,782 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 10:38:36,784 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 10:38:36,787 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:38:36" (1/1) ... [2022-04-06 10:38:36,789 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 10:38:36,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 10:38:36 BasicIcfg [2022-04-06 10:38:36,803 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 10:38:36,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 10:38:36,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 10:38:36,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 10:38:36,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 10:38:36" (1/4) ... [2022-04-06 10:38:36,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:38:36, skipping insertion in model container [2022-04-06 10:38:36,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 10:38:36" (2/4) ... [2022-04-06 10:38:36,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 10:38:36, skipping insertion in model container [2022-04-06 10:38:36,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 10:38:36" (3/4) ... [2022-04-06 10:38:36,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698a08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:38:36, skipping insertion in model container [2022-04-06 10:38:36,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 10:38:36" (4/4) ... [2022-04-06 10:38:36,815 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1b.cqvasr [2022-04-06 10:38:36,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 10:38:36,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 10:38:36,872 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 10:38:36,879 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-06 10:38:36,880 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 10:38:36,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-04-06 10:38:36,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-06 10:38:36,910 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:38:36,910 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:38:36,911 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:38:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:38:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash -633459621, now seen corresponding path program 1 times [2022-04-06 10:38:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:38:36,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723724572] [2022-04-06 10:38:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:38:36,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:38:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:38:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:38:37,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723724572] [2022-04-06 10:38:37,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723724572] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:38:37,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:38:37,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 10:38:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759593154] [2022-04-06 10:38:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:38:37,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 10:38:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:38:37,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 10:38:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 10:38:37,165 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-06 10:38:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:38:37,214 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-06 10:38:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 10:38:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 9 [2022-04-06 10:38:37,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:38:37,227 INFO L225 Difference]: With dead ends: 24 [2022-04-06 10:38:37,227 INFO L226 Difference]: Without dead ends: 11 [2022-04-06 10:38:37,230 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 10:38:37,241 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:38:37,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:38:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-04-06 10:38:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-04-06 10:38:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-04-06 10:38:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-04-06 10:38:37,277 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-04-06 10:38:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:38:37,277 INFO L478 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-04-06 10:38:37,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-04-06 10:38:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-04-06 10:38:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-06 10:38:37,279 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:38:37,279 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:38:37,280 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 10:38:37,280 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:38:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:38:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -633458660, now seen corresponding path program 1 times [2022-04-06 10:38:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:38:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480937145] [2022-04-06 10:38:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:38:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:38:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:38:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:38:37,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480937145] [2022-04-06 10:38:37,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480937145] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 10:38:37,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 10:38:37,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 10:38:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453750499] [2022-04-06 10:38:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 10:38:37,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 10:38:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:38:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 10:38:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 10:38:37,392 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-06 10:38:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:38:37,425 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-06 10:38:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 10:38:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2022-04-06 10:38:37,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:38:37,427 INFO L225 Difference]: With dead ends: 16 [2022-04-06 10:38:37,427 INFO L226 Difference]: Without dead ends: 13 [2022-04-06 10:38:37,430 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-06 10:38:37,432 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:38:37,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:38:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-04-06 10:38:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-04-06 10:38:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-04-06 10:38:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-04-06 10:38:37,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-04-06 10:38:37,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:38:37,442 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-04-06 10:38:37,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-04-06 10:38:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-06 10:38:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 10:38:37,450 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:38:37,450 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:38:37,450 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 10:38:37,451 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:38:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:38:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1132563481, now seen corresponding path program 1 times [2022-04-06 10:38:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:38:37,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059671376] [2022-04-06 10:38:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:38:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:38:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:38:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:37,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:38:37,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059671376] [2022-04-06 10:38:37,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059671376] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:38:37,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648853415] [2022-04-06 10:38:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:38:37,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:38:37,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:38:37,544 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) [2022-04-06 10:38:37,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 10:38:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:37,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-06 10:38:37,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:38:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:37,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:38:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:37,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648853415] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:38:37,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:38:37,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-04-06 10:38:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846151703] [2022-04-06 10:38:37,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:38:37,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 10:38:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:38:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 10:38:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-06 10:38:37,746 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:38:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:38:37,844 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-04-06 10:38:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 10:38:37,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-06 10:38:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:38:37,845 INFO L225 Difference]: With dead ends: 21 [2022-04-06 10:38:37,845 INFO L226 Difference]: Without dead ends: 18 [2022-04-06 10:38:37,846 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-04-06 10:38:37,847 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:38:37,847 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:38:37,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-06 10:38:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-06 10:38:37,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-04-06 10:38:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-04-06 10:38:37,851 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-04-06 10:38:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:38:37,851 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-04-06 10:38:37,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:38:37,852 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-04-06 10:38:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 10:38:37,852 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:38:37,852 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:38:37,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 10:38:38,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:38:38,079 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:38:38,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:38:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash -754672496, now seen corresponding path program 2 times [2022-04-06 10:38:38,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:38:38,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872266445] [2022-04-06 10:38:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:38:38,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:38:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 10:38:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 10:38:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:38,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 10:38:38,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872266445] [2022-04-06 10:38:38,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872266445] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 10:38:38,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468144326] [2022-04-06 10:38:38,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 10:38:38,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 10:38:38,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 10:38:38,155 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) [2022-04-06 10:38:38,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 10:38:38,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 10:38:38,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 10:38:38,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-06 10:38:38,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 10:38:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:38,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 10:38:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 10:38:38,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468144326] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 10:38:38,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-06 10:38:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2022-04-06 10:38:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478880389] [2022-04-06 10:38:38,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-06 10:38:38,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 10:38:38,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 10:38:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 10:38:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-04-06 10:38:38,298 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:38:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 10:38:38,393 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-04-06 10:38:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 10:38:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-06 10:38:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 10:38:38,394 INFO L225 Difference]: With dead ends: 25 [2022-04-06 10:38:38,394 INFO L226 Difference]: Without dead ends: 22 [2022-04-06 10:38:38,395 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-04-06 10:38:38,396 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 10:38:38,396 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 10:38:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-06 10:38:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-04-06 10:38:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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) [2022-04-06 10:38:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-04-06 10:38:38,400 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2022-04-06 10:38:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 10:38:38,401 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-04-06 10:38:38,401 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 10:38:38,401 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-04-06 10:38:38,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-06 10:38:38,401 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 10:38:38,402 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 10:38:38,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 10:38:38,614 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-06 10:38:38,615 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 10:38:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 10:38:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2022641846, now seen corresponding path program 3 times [2022-04-06 10:38:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 10:38:38,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737228601] [2022-04-06 10:38:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 10:38:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 10:38:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 10:38:38,628 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 10:38:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 10:38:38,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 10:38:38,661 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-06 10:38:38,662 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 10:38:38,663 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 10:38:38,667 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-04-06 10:38:38,669 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 10:38:38,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 10:38:38 BasicIcfg [2022-04-06 10:38:38,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 10:38:38,685 INFO L158 Benchmark]: Toolchain (without parser) took 2374.14ms. Allocated memory was 192.9MB in the beginning and 246.4MB in the end (delta: 53.5MB). Free memory was 132.8MB in the beginning and 207.6MB in the end (delta: -74.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 10:38:38,685 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 10:38:38,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.70ms. Allocated memory was 192.9MB in the beginning and 246.4MB in the end (delta: 53.5MB). Free memory was 132.5MB in the beginning and 217.1MB in the end (delta: -84.6MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-04-06 10:38:38,686 INFO L158 Benchmark]: Boogie Preprocessor took 22.21ms. Allocated memory is still 246.4MB. Free memory was 217.1MB in the beginning and 215.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 10:38:38,686 INFO L158 Benchmark]: RCFGBuilder took 229.11ms. Allocated memory is still 246.4MB. Free memory was 215.5MB in the beginning and 206.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-06 10:38:38,686 INFO L158 Benchmark]: IcfgTransformer took 21.49ms. Allocated memory is still 246.4MB. Free memory was 206.1MB in the beginning and 205.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 10:38:38,687 INFO L158 Benchmark]: TraceAbstraction took 1877.23ms. Allocated memory is still 246.4MB. Free memory was 204.6MB in the beginning and 207.6MB in the end (delta: -3.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 10:38:38,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 192.9MB. Free memory is still 148.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.70ms. Allocated memory was 192.9MB in the beginning and 246.4MB in the end (delta: 53.5MB). Free memory was 132.5MB in the beginning and 217.1MB in the end (delta: -84.6MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.21ms. Allocated memory is still 246.4MB. Free memory was 217.1MB in the beginning and 215.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 229.11ms. Allocated memory is still 246.4MB. Free memory was 215.5MB in the beginning and 206.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 21.49ms. Allocated memory is still 246.4MB. Free memory was 206.1MB in the beginning and 205.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1877.23ms. Allocated memory is still 246.4MB. Free memory was 204.6MB in the beginning and 207.6MB in the end (delta: -3.0MB). There was no memory consumed. 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 - CounterExampleResult [Line: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 VAL [a=0] [L19] COND TRUE a < 6 VAL [a=0] [L19] ++a VAL [a=1] [L19] COND TRUE a < 6 VAL [a=1] [L19] ++a VAL [a=2] [L19] COND TRUE a < 6 VAL [a=2] [L19] ++a VAL [a=3] [L19] COND TRUE a < 6 VAL [a=3] [L19] ++a VAL [a=4] [L19] COND TRUE a < 6 VAL [a=4] [L19] ++a VAL [a=5] [L19] COND TRUE a < 6 VAL [a=5] [L19] ++a VAL [a=6] [L19] COND FALSE !(a < 6) VAL [a=6] [L22] COND TRUE a == 6 VAL [a=6] [L23] reach_error() VAL [a=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 43 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, InterpolantAutomatonStates: 23, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/51 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 proved your program to be incorrect! [2022-04-06 10:38:38,719 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...