/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-regression/test27-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:50:07,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:50:07,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:50:07,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:50:07,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:50:07,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:50:07,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:50:07,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:50:07,602 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:50:07,605 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:50:07,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:50:07,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:50:07,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:50:07,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:50:07,608 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:50:07,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:50:07,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:50:07,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:50:07,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:50:07,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:50:07,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:50:07,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:50:07,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:50:07,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:50:07,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:50:07,612 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:50:07,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:50:07,612 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:50:07,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:50:07,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:50:07,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:50:07,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:50:07,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:50:07,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:50:07,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:50:07,614 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:50:07,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:50:07,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:50:07,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:50:07,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:50:07,615 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:50:07,615 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:50:07,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:50:07,616 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:50:07,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:50:07,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:50:07,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:50:07,885 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:50:07,886 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:50:07,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test27-1.c [2023-12-15 21:50:09,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:50:09,316 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:50:09,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-1.c [2023-12-15 21:50:09,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1c89152/0409d5cf5b464403ad68dbd010370068/FLAGc43431b42 [2023-12-15 21:50:09,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f1c89152/0409d5cf5b464403ad68dbd010370068 [2023-12-15 21:50:09,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:50:09,347 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:50:09,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:50:09,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:50:09,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:50:09,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a71b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09, skipping insertion in model container [2023-12-15 21:50:09,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:50:09,559 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-1.c[1154,1167] [2023-12-15 21:50:09,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:50:09,576 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:50:09,609 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test27-1.c[1154,1167] [2023-12-15 21:50:09,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:50:09,626 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:50:09,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09 WrapperNode [2023-12-15 21:50:09,626 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:50:09,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:50:09,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:50:09,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:50:09,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,682 INFO L138 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2023-12-15 21:50:09,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:50:09,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:50:09,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:50:09,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:50:09,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,723 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 3, 6, 4, 5]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 1, 2]. [2023-12-15 21:50:09,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:50:09,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:50:09,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:50:09,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:50:09,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (1/1) ... [2023-12-15 21:50:09,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:50:09,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:09,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:50:09,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:50:09,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:50:09,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-12-15 21:50:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:50:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:50:09,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 21:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 21:50:09,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 21:50:09,915 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:50:09,917 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:50:10,068 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:50:10,111 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:50:10,111 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 21:50:10,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:50:10 BoogieIcfgContainer [2023-12-15 21:50:10,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:50:10,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:50:10,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:50:10,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:50:10,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:50:09" (1/3) ... [2023-12-15 21:50:10,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602554c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:50:10, skipping insertion in model container [2023-12-15 21:50:10,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:50:09" (2/3) ... [2023-12-15 21:50:10,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602554c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:50:10, skipping insertion in model container [2023-12-15 21:50:10,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:50:10" (3/3) ... [2023-12-15 21:50:10,132 INFO L112 eAbstractionObserver]: Analyzing ICFG test27-1.c [2023-12-15 21:50:10,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:50:10,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:50:10,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:50:10,201 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3527dc6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:50:10,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:50:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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) [2023-12-15 21:50:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-15 21:50:10,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:10,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:10,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:10,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1499089080, now seen corresponding path program 1 times [2023-12-15 21:50:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:10,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035278625] [2023-12-15 21:50:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035278625] [2023-12-15 21:50:10,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035278625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:10,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:50:10,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:50:10,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23395143] [2023-12-15 21:50:10,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:10,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:50:10,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:50:10,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:50:10,575 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-15 21:50:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:10,635 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2023-12-15 21:50:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:50:10,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-15 21:50:10,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:10,643 INFO L225 Difference]: With dead ends: 27 [2023-12-15 21:50:10,643 INFO L226 Difference]: Without dead ends: 12 [2023-12-15 21:50:10,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:50:10,651 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:10,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:50:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-15 21:50:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-15 21:50:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2023-12-15 21:50:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-12-15 21:50:10,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2023-12-15 21:50:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:10,679 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-12-15 21:50:10,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-15 21:50:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-15 21:50:10,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-15 21:50:10,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:10,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:50:10,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1343434218, now seen corresponding path program 1 times [2023-12-15 21:50:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:10,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322941058] [2023-12-15 21:50:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:10,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:10,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322941058] [2023-12-15 21:50:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322941058] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844557425] [2023-12-15 21:50:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:10,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:10,838 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) [2023-12-15 21:50:10,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:50:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:10,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 21:50:10,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:11,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:11,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844557425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:50:11,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:50:11,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-15 21:50:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280327171] [2023-12-15 21:50:11,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:50:11,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:50:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:11,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:50:11,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:50:11,047 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:11,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:11,080 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2023-12-15 21:50:11,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:50:11,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-15 21:50:11,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:11,081 INFO L225 Difference]: With dead ends: 24 [2023-12-15 21:50:11,081 INFO L226 Difference]: Without dead ends: 15 [2023-12-15 21:50:11,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:50:11,083 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:11,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:50:11,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-15 21:50:11,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-15 21:50:11,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-12-15 21:50:11,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-12-15 21:50:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:11,096 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-12-15 21:50:11,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-12-15 21:50:11,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 21:50:11,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:11,101 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:11,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:11,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:11,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:11,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash 879066497, now seen corresponding path program 2 times [2023-12-15 21:50:11,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:11,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473830228] [2023-12-15 21:50:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:11,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:11,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473830228] [2023-12-15 21:50:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473830228] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:11,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911531930] [2023-12-15 21:50:11,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:50:11,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:11,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:11,562 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) [2023-12-15 21:50:11,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:50:11,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-15 21:50:11,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:50:11,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 21:50:11,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:11,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-15 21:50:11,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-15 21:50:11,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 72 [2023-12-15 21:50:11,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 36 [2023-12-15 21:50:11,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-15 21:50:11,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-15 21:50:11,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:50:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 21:50:11,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:50:11,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911531930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:50:11,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:50:11,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-12-15 21:50:11,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226786928] [2023-12-15 21:50:11,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:50:11,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:50:11,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:50:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:50:11,849 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:11,899 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-12-15 21:50:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:50:11,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-15 21:50:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:11,901 INFO L225 Difference]: With dead ends: 21 [2023-12-15 21:50:11,901 INFO L226 Difference]: Without dead ends: 17 [2023-12-15 21:50:11,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:50:11,935 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:11,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:50:11,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-15 21:50:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-15 21:50:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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) [2023-12-15 21:50:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-12-15 21:50:11,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2023-12-15 21:50:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:11,939 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-12-15 21:50:11,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:50:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-12-15 21:50:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-15 21:50:11,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:11,940 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:11,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 21:50:12,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-15 21:50:12,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:12,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1299190276, now seen corresponding path program 1 times [2023-12-15 21:50:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:12,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056240229] [2023-12-15 21:50:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:50:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:12,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056240229] [2023-12-15 21:50:12,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056240229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:12,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898678243] [2023-12-15 21:50:12,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:12,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:12,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:12,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:12,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:50:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:12,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:50:12,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:50:12,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:50:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898678243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:50:12,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:50:12,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-15 21:50:12,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042688135] [2023-12-15 21:50:12,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:50:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:50:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:50:12,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:50:12,567 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2023-12-15 21:50:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:12,594 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-12-15 21:50:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 21:50:12,595 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-15 21:50:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:12,595 INFO L225 Difference]: With dead ends: 34 [2023-12-15 21:50:12,595 INFO L226 Difference]: Without dead ends: 23 [2023-12-15 21:50:12,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:50:12,597 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:12,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:50:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-15 21:50:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-15 21:50:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2023-12-15 21:50:12,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-15 21:50:12,604 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2023-12-15 21:50:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:12,605 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-15 21:50:12,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 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) [2023-12-15 21:50:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-15 21:50:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 21:50:12,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:12,606 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:12,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:12,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:12,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash -140984868, now seen corresponding path program 2 times [2023-12-15 21:50:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:12,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468656018] [2023-12-15 21:50:12,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:12,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:18,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:18,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468656018] [2023-12-15 21:50:18,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468656018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:18,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473808402] [2023-12-15 21:50:18,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:50:18,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:18,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:18,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:18,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:50:18,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:50:18,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:50:18,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-15 21:50:18,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:18,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 1 [2023-12-15 21:50:18,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 1 [2023-12-15 21:50:18,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 1 [2023-12-15 21:50:18,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-15 21:50:18,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-15 21:50:18,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 72 [2023-12-15 21:50:18,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 36 [2023-12-15 21:50:18,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2023-12-15 21:50:18,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-12-15 21:50:18,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-15 21:50:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-15 21:50:18,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-15 21:50:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473808402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:50:19,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:50:19,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 23 [2023-12-15 21:50:19,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665704892] [2023-12-15 21:50:19,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:50:19,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-15 21:50:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-15 21:50:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:50:19,060 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2023-12-15 21:50:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:19,572 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2023-12-15 21:50:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 21:50:19,572 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-15 21:50:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:19,573 INFO L225 Difference]: With dead ends: 33 [2023-12-15 21:50:19,573 INFO L226 Difference]: Without dead ends: 29 [2023-12-15 21:50:19,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2023-12-15 21:50:19,574 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:19,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:50:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-15 21:50:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-15 21:50:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2023-12-15 21:50:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-12-15 21:50:19,580 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2023-12-15 21:50:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:19,581 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-12-15 21:50:19,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2023-12-15 21:50:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-12-15 21:50:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 21:50:19,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:50:19,582 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:50:19,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:19,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:19,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:50:19,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:50:19,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2018363699, now seen corresponding path program 3 times [2023-12-15 21:50:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:50:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821969630] [2023-12-15 21:50:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:50:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:50:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:50:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:50:24,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:50:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821969630] [2023-12-15 21:50:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821969630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:50:24,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142233742] [2023-12-15 21:50:24,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:50:24,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:24,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:50:24,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:50:24,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:50:24,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-15 21:50:24,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:50:24,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-15 21:50:24,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:50:24,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:50:24,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-15 21:50:24,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 81 [2023-12-15 21:50:24,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 1 [2023-12-15 21:50:24,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 1 [2023-12-15 21:50:24,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 1 [2023-12-15 21:50:24,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 1 [2023-12-15 21:50:25,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1034 treesize of output 826 [2023-12-15 21:50:25,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 826 treesize of output 618 [2023-12-15 21:50:25,306 INFO L349 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-12-15 21:50:25,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 618 treesize of output 330 [2023-12-15 21:50:25,314 INFO L349 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-12-15 21:50:25,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 290 treesize of output 114 [2023-12-15 21:50:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-15 21:50:25,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:50:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-15 21:50:25,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142233742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:50:25,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:50:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8, 8] total 33 [2023-12-15 21:50:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759631492] [2023-12-15 21:50:25,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:50:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-15 21:50:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:50:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-15 21:50:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=941, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 21:50:25,662 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 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) [2023-12-15 21:50:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:50:27,227 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-12-15 21:50:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 21:50:27,227 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-12-15 21:50:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:50:27,227 INFO L225 Difference]: With dead ends: 33 [2023-12-15 21:50:27,228 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 21:50:27,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=355, Invalid=1997, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 21:50:27,229 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:50:27,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 13 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:50:27,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 21:50:27,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 21:50:27,230 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) [2023-12-15 21:50:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 21:50:27,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-12-15 21:50:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:50:27,231 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 21:50:27,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 33 states have internal predecessors, (52), 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) [2023-12-15 21:50:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 21:50:27,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 21:50:27,234 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:50:27,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:50:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:50:27,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 21:50:27,690 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 21 56) no Hoare annotation was computed. [2023-12-15 21:50:27,691 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-12-15 21:50:27,691 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2023-12-15 21:50:27,691 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-15 21:50:27,691 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 34) the Hoare annotation is: (let ((.cse2 (or (< |ULTIMATE.start_main_~i~0#1| 1) (= |ULTIMATE.start_main_~#dummy~0#1.offset| 0))) (.cse0 (= |ULTIMATE.start_main_~#dummies~0#1.offset| 0)) (.cse1 (= |ULTIMATE.start_main_~#a~0#1.offset| 0))) (or (and .cse0 .cse1 (or (< |ULTIMATE.start_main_~i~0#1| 2) (< 7 |ULTIMATE.start_main_~j~0#1|))) (and .cse0 .cse2 .cse1 (= |ULTIMATE.start_main_~j~0#1| 0)) (and .cse0 .cse2 .cse1 (= |ULTIMATE.start_main_~j~0#1| 1)) (and .cse0 (= 6 |ULTIMATE.start_main_~j~0#1|) .cse1) (and (= 2 |ULTIMATE.start_main_~j~0#1|) .cse0 .cse2 .cse1) (and (= |ULTIMATE.start_main_~j~0#1| 4) .cse0 .cse1) (and .cse0 (= 7 |ULTIMATE.start_main_~j~0#1|) .cse1) (and .cse0 (= 3 |ULTIMATE.start_main_~j~0#1|) .cse2 .cse1) (and .cse0 .cse1 (= 5 |ULTIMATE.start_main_~j~0#1|)))) [2023-12-15 21:50:27,691 INFO L899 garLoopResultBuilder]: For program point L29-4(lines 29 34) no Hoare annotation was computed. [2023-12-15 21:50:27,691 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2023-12-15 21:50:27,691 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-15 21:50:27,692 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 22 56) no Hoare annotation was computed. [2023-12-15 21:50:27,692 INFO L899 garLoopResultBuilder]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2023-12-15 21:50:27,692 INFO L895 garLoopResultBuilder]: At program point L43-3(lines 43 45) the Hoare annotation is: (and (exists ((|v_ULTIMATE.start_main_~i~0#1_28| Int)) (let ((.cse4 (select (select |#memory_$Pointer$#1.base| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)) (.cse5 (+ (* |v_ULTIMATE.start_main_~i~0#1_28| 4) (select (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~#cont~0#1.base|) |ULTIMATE.start_main_~#cont~0#1.offset|)))) (let ((.cse2 (select (select |#memory_$Pointer$#4.base| .cse4) .cse5)) (.cse3 (select (select |#memory_$Pointer$#4.offset| .cse4) .cse5))) (let ((.cse1 (select (select |#memory_$Pointer$#3.base| .cse2) .cse3)) (.cse0 (+ 4 (select (select |#memory_$Pointer$#3.offset| .cse2) .cse3)))) (and (= .cse0 |ULTIMATE.start_main_~pa~0#1.offset|) (= .cse1 |ULTIMATE.start_main_~pa~0#1.base|) (= |v_ULTIMATE.start_main_~i~0#1_28| (select (select |#memory_int#2| .cse1) .cse0))))))) (= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (<= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int#2| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|)) (= |ULTIMATE.start_main_~#a~0#1.offset| 0)) [2023-12-15 21:50:27,692 INFO L899 garLoopResultBuilder]: For program point L43-4(lines 43 45) no Hoare annotation was computed. [2023-12-15 21:50:27,692 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 50) no Hoare annotation was computed. [2023-12-15 21:50:27,693 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 35 50) no Hoare annotation was computed. [2023-12-15 21:50:27,695 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1] [2023-12-15 21:50:27,697 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:50:27,723 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~i~0#1_28 : int :: (4 + #memory_$Pointer$#3.offset[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]] == ~pa~0!offset && #memory_$Pointer$#3.base[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]] == ~pa~0!base) && v_ULTIMATE.start_main_~i~0#1_28 == #memory_int#2[#memory_$Pointer$#3.base[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]]][4 + #memory_$Pointer$#3.offset[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]]]) could not be translated [2023-12-15 21:50:27,724 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#2[~pa~0!base][~pa~0!offset] could not be translated [2023-12-15 21:50:27,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:50:27 BoogieIcfgContainer [2023-12-15 21:50:27,726 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:50:27,726 INFO L158 Benchmark]: Toolchain (without parser) took 18379.25ms. Allocated memory was 181.4MB in the beginning and 704.6MB in the end (delta: 523.2MB). Free memory was 136.9MB in the beginning and 672.0MB in the end (delta: -535.1MB). Peak memory consumption was 334.0MB. Max. memory is 8.0GB. [2023-12-15 21:50:27,726 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 181.4MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:50:27,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.34ms. Allocated memory is still 181.4MB. Free memory was 136.9MB in the beginning and 125.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 21:50:27,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.40ms. Allocated memory is still 181.4MB. Free memory was 125.3MB in the beginning and 123.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:50:27,731 INFO L158 Benchmark]: Boogie Preprocessor took 70.85ms. Allocated memory is still 181.4MB. Free memory was 123.7MB in the beginning and 121.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:50:27,731 INFO L158 Benchmark]: RCFGBuilder took 357.54ms. Allocated memory is still 181.4MB. Free memory was 121.0MB in the beginning and 103.4MB in the end (delta: 17.7MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-15 21:50:27,731 INFO L158 Benchmark]: TraceAbstraction took 17611.76ms. Allocated memory was 181.4MB in the beginning and 704.6MB in the end (delta: 523.2MB). Free memory was 102.8MB in the beginning and 672.0MB in the end (delta: -569.3MB). Peak memory consumption was 299.4MB. Max. memory is 8.0GB. [2023-12-15 21:50:27,733 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 181.4MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 277.34ms. Allocated memory is still 181.4MB. Free memory was 136.9MB in the beginning and 125.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.40ms. Allocated memory is still 181.4MB. Free memory was 125.3MB in the beginning and 123.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.85ms. Allocated memory is still 181.4MB. Free memory was 123.7MB in the beginning and 121.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 357.54ms. Allocated memory is still 181.4MB. Free memory was 121.0MB in the beginning and 103.4MB in the end (delta: 17.7MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 17611.76ms. Allocated memory was 181.4MB in the beginning and 704.6MB in the end (delta: 523.2MB). Free memory was 102.8MB in the beginning and 672.0MB in the end (delta: -569.3MB). Peak memory consumption was 299.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists v_ULTIMATE.start_main_~i~0#1_28 : int :: (4 + #memory_$Pointer$#3.offset[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]] == ~pa~0!offset && #memory_$Pointer$#3.base[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]] == ~pa~0!base) && v_ULTIMATE.start_main_~i~0#1_28 == #memory_int#2[#memory_$Pointer$#3.base[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]]][4 + #memory_$Pointer$#3.offset[#memory_$Pointer$#4.base[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]][#memory_$Pointer$#4.offset[#memory_$Pointer$#1.base[~#cont~0!base][~#cont~0!offset]][v_ULTIMATE.start_main_~i~0#1_28 * 4 + #memory_$Pointer$#1.offset[~#cont~0!base][~#cont~0!offset]]]]) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#2[~pa~0!base][~pa~0!offset] could not be translated * 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: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.5s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 144 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 724 IncrementalHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 42 mSDtfsCounter, 724 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 76, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 18 NumberOfFragments, 300 HoareAnnotationTreeSize, 2 FormulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FormulaSimplificationsInter, 1122 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 191 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 253 ConstructedInterpolants, 13 QuantifiedInterpolants, 4574 SizeOfPredicates, 52 NumberOfNonLiveVariables, 1271 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 267/455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((((((((((i < 2) || (7 < j)) || (j == 0)) || (j == 1)) || (6 == j)) || (2 == j)) || (j == 4)) || (7 == j)) || (3 == j)) || (5 == j)) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-12-15 21:50:27,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...