./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 19:39:59,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 19:39:59,080 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 19:39:59,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 19:39:59,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 19:39:59,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 19:39:59,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 19:39:59,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 19:39:59,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 19:39:59,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 19:39:59,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 19:39:59,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 19:39:59,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 19:39:59,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 19:39:59,118 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 19:39:59,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 19:39:59,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 19:39:59,119 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 19:39:59,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 19:39:59,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 19:39:59,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 19:39:59,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 19:39:59,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 19:39:59,121 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 19:39:59,121 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 19:39:59,121 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 19:39:59,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 19:39:59,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 19:39:59,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 19:39:59,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 19:39:59,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 19:39:59,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 19:39:59,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:39:59,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 19:39:59,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 19:39:59,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 19:39:59,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 19:39:59,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 19:39:59,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 19:39:59,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 19:39:59,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 19:39:59,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 19:39:59,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 [2024-10-23 19:39:59,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 19:39:59,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 19:39:59,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 19:39:59,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 19:39:59,355 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 19:39:59,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2024-10-23 19:40:00,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 19:40:00,879 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 19:40:00,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2024-10-23 19:40:00,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ac52d47/228f701037724ee38a830b55db3885c1/FLAG931135f49 [2024-10-23 19:40:00,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36ac52d47/228f701037724ee38a830b55db3885c1 [2024-10-23 19:40:00,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 19:40:00,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 19:40:00,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 19:40:00,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 19:40:00,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 19:40:00,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:40:00" (1/1) ... [2024-10-23 19:40:00,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec9d6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:00, skipping insertion in model container [2024-10-23 19:40:00,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:40:00" (1/1) ... [2024-10-23 19:40:00,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 19:40:01,087 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2024-10-23 19:40:01,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:40:02,731 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 19:40:02,740 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2024-10-23 19:40:02,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 19:40:02,769 INFO L204 MainTranslator]: Completed translation [2024-10-23 19:40:02,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02 WrapperNode [2024-10-23 19:40:02,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 19:40:02,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 19:40:02,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 19:40:02,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 19:40:02,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,801 INFO L138 Inliner]: procedures = 16, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2024-10-23 19:40:02,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 19:40:02,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 19:40:02,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 19:40:02,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 19:40:02,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,824 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 6, 7, 4]. 37 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 0, 2]. The 8 writes are split as follows [0, 3, 5, 0]. [2024-10-23 19:40:02,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 19:40:02,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 19:40:02,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 19:40:02,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 19:40:02,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (1/1) ... [2024-10-23 19:40:02,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 19:40:02,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:40:02,873 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) [2024-10-23 19:40:02,876 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 [2024-10-23 19:40:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 19:40:02,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 19:40:02,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-23 19:40:02,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 19:40:02,982 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 19:40:02,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 19:40:03,128 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-23 19:40:03,130 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 19:40:03,152 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 19:40:03,152 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-23 19:40:03,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:40:03 BoogieIcfgContainer [2024-10-23 19:40:03,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 19:40:03,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 19:40:03,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 19:40:03,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 19:40:03,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:40:00" (1/3) ... [2024-10-23 19:40:03,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6275beb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:40:03, skipping insertion in model container [2024-10-23 19:40:03,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:40:02" (2/3) ... [2024-10-23 19:40:03,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6275beb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:40:03, skipping insertion in model container [2024-10-23 19:40:03,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:40:03" (3/3) ... [2024-10-23 19:40:03,161 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2024-10-23 19:40:03,181 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 19:40:03,184 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 19:40:03,226 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 19:40:03,230 INFO L333 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, 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;@250cdbf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 19:40:03,230 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 19:40:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 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) [2024-10-23 19:40:03,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-23 19:40:03,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:40:03,237 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:40:03,237 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:40:03,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:40:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1951928069, now seen corresponding path program 1 times [2024-10-23 19:40:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:40:03,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213135593] [2024-10-23 19:40:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:03,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:40:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:03,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:40:03,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213135593] [2024-10-23 19:40:03,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213135593] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:40:03,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:40:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 19:40:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556480727] [2024-10-23 19:40:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:40:03,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 19:40:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:40:03,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 19:40:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 19:40:03,464 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-23 19:40:03,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:40:03,490 INFO L93 Difference]: Finished difference Result 26 states and 37 transitions. [2024-10-23 19:40:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 19:40:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-23 19:40:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:40:03,505 INFO L225 Difference]: With dead ends: 26 [2024-10-23 19:40:03,506 INFO L226 Difference]: Without dead ends: 13 [2024-10-23 19:40:03,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 19:40:03,512 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:40:03,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:40:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-23 19:40:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-23 19:40:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2024-10-23 19:40:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2024-10-23 19:40:03,543 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 8 [2024-10-23 19:40:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:40:03,543 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2024-10-23 19:40:03,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-23 19:40:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2024-10-23 19:40:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-23 19:40:03,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:40:03,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:40:03,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 19:40:03,546 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:40:03,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:40:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash -995685192, now seen corresponding path program 1 times [2024-10-23 19:40:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:40:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131918597] [2024-10-23 19:40:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:40:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:03,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:40:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131918597] [2024-10-23 19:40:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131918597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 19:40:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 19:40:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 19:40:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612152321] [2024-10-23 19:40:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 19:40:03,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 19:40:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:40:03,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 19:40:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 19:40:03,678 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-23 19:40:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:40:03,713 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-10-23 19:40:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 19:40:03,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-23 19:40:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:40:03,714 INFO L225 Difference]: With dead ends: 33 [2024-10-23 19:40:03,714 INFO L226 Difference]: Without dead ends: 24 [2024-10-23 19:40:03,715 INFO L431 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 [2024-10-23 19:40:03,716 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:40:03,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:40:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-23 19:40:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2024-10-23 19:40:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 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) [2024-10-23 19:40:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2024-10-23 19:40:03,730 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2024-10-23 19:40:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:40:03,730 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2024-10-23 19:40:03,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-23 19:40:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2024-10-23 19:40:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-23 19:40:03,731 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:40:03,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:40:03,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 19:40:03,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:40:03,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:40:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -398455272, now seen corresponding path program 1 times [2024-10-23 19:40:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:40:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314974260] [2024-10-23 19:40:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:40:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:03,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:40:03,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314974260] [2024-10-23 19:40:03,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314974260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:40:03,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963984456] [2024-10-23 19:40:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:03,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:40:03,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:40:03,980 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) [2024-10-23 19:40:03,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 19:40:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:04,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 19:40:04,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:40:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:04,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:40:04,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963984456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:40:04,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:40:04,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-23 19:40:04,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080714440] [2024-10-23 19:40:04,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:40:04,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 19:40:04,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:40:04,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 19:40:04,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-23 19:40:04,197 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2024-10-23 19:40:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:40:04,245 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-10-23 19:40:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 19:40:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) Word has length 11 [2024-10-23 19:40:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:40:04,247 INFO L225 Difference]: With dead ends: 57 [2024-10-23 19:40:04,247 INFO L226 Difference]: Without dead ends: 48 [2024-10-23 19:40:04,247 INFO L431 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 [2024-10-23 19:40:04,248 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 84 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 19:40:04,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 19:40:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-23 19:40:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 23. [2024-10-23 19:40:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2024-10-23 19:40:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-10-23 19:40:04,253 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2024-10-23 19:40:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:40:04,253 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-10-23 19:40:04,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 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) [2024-10-23 19:40:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-10-23 19:40:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-23 19:40:04,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:40:04,254 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:40:04,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 19:40:04,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:40:04,457 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:40:04,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:40:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash 966005944, now seen corresponding path program 2 times [2024-10-23 19:40:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:40:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101927898] [2024-10-23 19:40:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:40:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:04,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:40:04,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101927898] [2024-10-23 19:40:04,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101927898] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:40:04,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159580650] [2024-10-23 19:40:04,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 19:40:04,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:40:04,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:40:04,615 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) [2024-10-23 19:40:04,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 19:40:04,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 19:40:04,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:40:04,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 19:40:04,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:40:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:04,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:40:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159580650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:40:04,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:40:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-23 19:40:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407067399] [2024-10-23 19:40:04,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:40:04,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-23 19:40:04,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:40:04,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-23 19:40:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-23 19:40:04,819 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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) [2024-10-23 19:40:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:40:04,901 INFO L93 Difference]: Finished difference Result 123 states and 162 transitions. [2024-10-23 19:40:04,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-23 19:40:04,901 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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 20 [2024-10-23 19:40:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:40:04,902 INFO L225 Difference]: With dead ends: 123 [2024-10-23 19:40:04,902 INFO L226 Difference]: Without dead ends: 114 [2024-10-23 19:40:04,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-23 19:40:04,904 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 194 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:40:04,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 102 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:40:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-23 19:40:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 41. [2024-10-23 19:40:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 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) [2024-10-23 19:40:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-10-23 19:40:04,917 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 20 [2024-10-23 19:40:04,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:40:04,917 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-10-23 19:40:04,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 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) [2024-10-23 19:40:04,918 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-10-23 19:40:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-23 19:40:04,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:40:04,919 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:40:04,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 19:40:05,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-23 19:40:05,120 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:40:05,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:40:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash 979968184, now seen corresponding path program 3 times [2024-10-23 19:40:05,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:40:05,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240654624] [2024-10-23 19:40:05,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:05,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:40:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:05,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:40:05,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240654624] [2024-10-23 19:40:05,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240654624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:40:05,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577203149] [2024-10-23 19:40:05,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 19:40:05,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:40:05,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:40:05,477 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) [2024-10-23 19:40:05,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 19:40:11,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-23 19:40:11,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 19:40:11,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 19:40:11,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 19:40:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:11,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 19:40:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577203149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 19:40:11,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 19:40:11,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-10-23 19:40:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073569244] [2024-10-23 19:40:11,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 19:40:11,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-23 19:40:11,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 19:40:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-23 19:40:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-23 19:40:11,882 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 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) [2024-10-23 19:40:12,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 19:40:12,057 INFO L93 Difference]: Finished difference Result 255 states and 336 transitions. [2024-10-23 19:40:12,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-23 19:40:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 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 38 [2024-10-23 19:40:12,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 19:40:12,060 INFO L225 Difference]: With dead ends: 255 [2024-10-23 19:40:12,060 INFO L226 Difference]: Without dead ends: 246 [2024-10-23 19:40:12,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-23 19:40:12,063 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 534 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 19:40:12,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 222 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 19:40:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-10-23 19:40:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 77. [2024-10-23 19:40:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 76 states have internal predecessors, (102), 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) [2024-10-23 19:40:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2024-10-23 19:40:12,076 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 38 [2024-10-23 19:40:12,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 19:40:12,076 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2024-10-23 19:40:12,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 24 states have internal predecessors, (74), 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) [2024-10-23 19:40:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2024-10-23 19:40:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-23 19:40:12,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 19:40:12,079 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 19:40:12,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 19:40:12,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:40:12,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 19:40:12,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 19:40:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1691498680, now seen corresponding path program 4 times [2024-10-23 19:40:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 19:40:12,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940969185] [2024-10-23 19:40:12,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 19:40:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 19:40:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 19:40:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 19:40:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 19:40:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940969185] [2024-10-23 19:40:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940969185] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 19:40:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237739708] [2024-10-23 19:40:13,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 19:40:13,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 19:40:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 19:40:13,047 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) [2024-10-23 19:40:13,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process