./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.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/uthash-2.0.2/uthash_BER_nondet_test4-3.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 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:40:20,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:40:20,804 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:40:20,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:40:20,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:40:20,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:40:20,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:40:20,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:40:20,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:40:20,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:40:20,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:40:20,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:40:20,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:40:20,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:40:20,852 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:40:20,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:40:20,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:40:20,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:40:20,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:40:20,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:40:20,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:40:20,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:40:20,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:40:20,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:40:20,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:40:20,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:40:20,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:40:20,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:40:20,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:40:20,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:40:20,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:40:20,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:40:20,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:40:20,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:40:20,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:40:20,859 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:40:20,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:40:20,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:40:20,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:40:20,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:40:20,862 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:40:20,862 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:40:20,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87dd09ebbd7004650762949ef44f5f810b259dfe76e04f61193dc727167eb435 [2024-10-24 14:40:21,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:40:21,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:40:21,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:40:21,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:40:21,163 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:40:21,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2024-10-24 14:40:22,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:40:22,987 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:40:22,988 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2024-10-24 14:40:23,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fefa2f6d/6317a26513cd4edeb2fbd9e433a668e6/FLAG268e731b1 [2024-10-24 14:40:23,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fefa2f6d/6317a26513cd4edeb2fbd9e433a668e6 [2024-10-24 14:40:23,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:40:23,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:40:23,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:40:23,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:40:23,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:40:23,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:40:23" (1/1) ... [2024-10-24 14:40:23,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1b85de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:23, skipping insertion in model container [2024-10-24 14:40:23,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:40:23" (1/1) ... [2024-10-24 14:40:23,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:40:23,770 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/uthash-2.0.2/uthash_BER_nondet_test4-3.i[33519,33532] [2024-10-24 14:40:23,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:40:23,946 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:40:23,989 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/uthash-2.0.2/uthash_BER_nondet_test4-3.i[33519,33532] [2024-10-24 14:40:24,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:40:24,116 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:40:24,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24 WrapperNode [2024-10-24 14:40:24,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:40:24,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:40:24,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:40:24,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:40:24,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,319 INFO L138 Inliner]: procedures = 176, calls = 424, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1864 [2024-10-24 14:40:24,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:40:24,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:40:24,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:40:24,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:40:24,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,350 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,489 INFO L175 MemorySlicer]: Split 403 memory accesses to 2 slices as follows [2, 401]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 98 writes are split as follows [0, 98]. [2024-10-24 14:40:24,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,587 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:40:24,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:40:24,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:40:24,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:40:24,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (1/1) ... [2024-10-24 14:40:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:40:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:24,643 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) [2024-10-24 14:40:24,649 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 [2024-10-24 14:40:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:40:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:40:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:40:24,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:40:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:40:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:40:24,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:40:24,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:40:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:40:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:40:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:40:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:40:24,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:40:24,968 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:40:24,970 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:40:26,624 INFO L? ?]: Removed 420 outVars from TransFormulas that were not future-live. [2024-10-24 14:40:26,624 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:40:26,681 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:40:26,681 INFO L314 CfgBuilder]: Removed 77 assume(true) statements. [2024-10-24 14:40:26,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:40:26 BoogieIcfgContainer [2024-10-24 14:40:26,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:40:26,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:40:26,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:40:26,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:40:26,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:40:23" (1/3) ... [2024-10-24 14:40:26,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cea2a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:40:26, skipping insertion in model container [2024-10-24 14:40:26,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:40:24" (2/3) ... [2024-10-24 14:40:26,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cea2a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:40:26, skipping insertion in model container [2024-10-24 14:40:26,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:40:26" (3/3) ... [2024-10-24 14:40:26,692 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-3.i [2024-10-24 14:40:26,709 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:40:26,709 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:40:26,790 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:40:26,799 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;@7da39c58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:40:26,800 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:40:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 461 states, 452 states have (on average 1.6238938053097345) internal successors, (734), 453 states have internal predecessors, (734), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-24 14:40:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:40:26,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:26,814 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:26,815 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:26,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1046347056, now seen corresponding path program 1 times [2024-10-24 14:40:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:26,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049989305] [2024-10-24 14:40:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:40:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049989305] [2024-10-24 14:40:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049989305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:27,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:40:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54322362] [2024-10-24 14:40:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:27,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:27,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:27,121 INFO L87 Difference]: Start difference. First operand has 461 states, 452 states have (on average 1.6238938053097345) internal successors, (734), 453 states have internal predecessors, (734), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-10-24 14:40:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:27,514 INFO L93 Difference]: Finished difference Result 1243 states and 2014 transitions. [2024-10-24 14:40:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:40:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 [2024-10-24 14:40:27,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:27,539 INFO L225 Difference]: With dead ends: 1243 [2024-10-24 14:40:27,540 INFO L226 Difference]: Without dead ends: 717 [2024-10-24 14:40:27,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:27,552 INFO L432 NwaCegarLoop]: 653 mSDtfsCounter, 467 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:27,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1887 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-10-24 14:40:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2024-10-24 14:40:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 706 states have (on average 1.4560906515580736) internal successors, (1028), 706 states have internal predecessors, (1028), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1046 transitions. [2024-10-24 14:40:27,656 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1046 transitions. Word has length 9 [2024-10-24 14:40:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:27,657 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1046 transitions. [2024-10-24 14:40:27,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) [2024-10-24 14:40:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1046 transitions. [2024-10-24 14:40:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:40:27,670 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:27,670 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:27,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:40:27,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:27,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1861923141, now seen corresponding path program 1 times [2024-10-24 14:40:27,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:27,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218780018] [2024-10-24 14:40:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:28,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 14:40:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:28,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-24 14:40:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:40:28,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:28,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218780018] [2024-10-24 14:40:28,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218780018] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:28,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:28,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:40:28,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025323059] [2024-10-24 14:40:28,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:28,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:40:28,441 INFO L87 Difference]: Start difference. First operand 717 states and 1046 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:29,354 INFO L93 Difference]: Finished difference Result 1383 states and 2021 transitions. [2024-10-24 14:40:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:40:29,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-10-24 14:40:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:29,359 INFO L225 Difference]: With dead ends: 1383 [2024-10-24 14:40:29,359 INFO L226 Difference]: Without dead ends: 725 [2024-10-24 14:40:29,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:40:29,362 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 107 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:29,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1975 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 14:40:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-10-24 14:40:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 717. [2024-10-24 14:40:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 706 states have (on average 1.4362606232294617) internal successors, (1014), 706 states have internal predecessors, (1014), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1032 transitions. [2024-10-24 14:40:29,409 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1032 transitions. Word has length 168 [2024-10-24 14:40:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:29,410 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1032 transitions. [2024-10-24 14:40:29,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1032 transitions. [2024-10-24 14:40:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:40:29,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:29,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:29,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:40:29,418 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:29,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 30989113, now seen corresponding path program 1 times [2024-10-24 14:40:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:29,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709809935] [2024-10-24 14:40:29,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:29,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:29,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 14:40:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:29,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-24 14:40:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:40:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709809935] [2024-10-24 14:40:29,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709809935] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:29,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:29,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:40:29,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986848372] [2024-10-24 14:40:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:29,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:29,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:29,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:29,811 INFO L87 Difference]: Start difference. First operand 717 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:30,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:30,194 INFO L93 Difference]: Finished difference Result 1373 states and 1988 transitions. [2024-10-24 14:40:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:40:30,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-10-24 14:40:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:30,201 INFO L225 Difference]: With dead ends: 1373 [2024-10-24 14:40:30,202 INFO L226 Difference]: Without dead ends: 731 [2024-10-24 14:40:30,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:30,206 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 3 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:30,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1551 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:40:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-10-24 14:40:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2024-10-24 14:40:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 718 states have (on average 1.4289693593314763) internal successors, (1026), 718 states have internal predecessors, (1026), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1044 transitions. [2024-10-24 14:40:30,237 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1044 transitions. Word has length 168 [2024-10-24 14:40:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:30,239 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1044 transitions. [2024-10-24 14:40:30,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1044 transitions. [2024-10-24 14:40:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:40:30,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:30,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:30,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:40:30,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:30,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:30,243 INFO L85 PathProgramCache]: Analyzing trace with hash -379621253, now seen corresponding path program 1 times [2024-10-24 14:40:30,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:30,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392068581] [2024-10-24 14:40:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 14:40:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-24 14:40:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:40:30,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:30,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392068581] [2024-10-24 14:40:30,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392068581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:30,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:30,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:40:30,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530968244] [2024-10-24 14:40:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:30,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:30,518 INFO L87 Difference]: Start difference. First operand 729 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:30,894 INFO L93 Difference]: Finished difference Result 1311 states and 1888 transitions. [2024-10-24 14:40:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:40:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-10-24 14:40:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:30,899 INFO L225 Difference]: With dead ends: 1311 [2024-10-24 14:40:30,899 INFO L226 Difference]: Without dead ends: 729 [2024-10-24 14:40:30,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:40:30,901 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 136 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:30,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1578 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:30,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-10-24 14:40:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2024-10-24 14:40:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 716 states have (on average 1.4287709497206704) internal successors, (1023), 716 states have internal predecessors, (1023), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:30,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1041 transitions. [2024-10-24 14:40:30,920 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1041 transitions. Word has length 168 [2024-10-24 14:40:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:30,921 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1041 transitions. [2024-10-24 14:40:30,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-24 14:40:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1041 transitions. [2024-10-24 14:40:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-24 14:40:30,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:30,924 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:30,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:40:30,924 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:30,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash -416051727, now seen corresponding path program 1 times [2024-10-24 14:40:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:30,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388761673] [2024-10-24 14:40:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:30,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:40:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:40:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-24 14:40:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-24 14:40:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:31,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388761673] [2024-10-24 14:40:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388761673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:31,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:40:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376850260] [2024-10-24 14:40:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:31,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:40:31,353 INFO L87 Difference]: Start difference. First operand 727 states and 1041 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:31,732 INFO L93 Difference]: Finished difference Result 1170 states and 1680 transitions. [2024-10-24 14:40:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:40:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2024-10-24 14:40:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:31,738 INFO L225 Difference]: With dead ends: 1170 [2024-10-24 14:40:31,738 INFO L226 Difference]: Without dead ends: 645 [2024-10-24 14:40:31,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:40:31,740 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 32 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:31,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1732 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-10-24 14:40:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 643. [2024-10-24 14:40:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 632 states have (on average 1.375) internal successors, (869), 632 states have internal predecessors, (869), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 887 transitions. [2024-10-24 14:40:31,769 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 887 transitions. Word has length 181 [2024-10-24 14:40:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:31,771 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 887 transitions. [2024-10-24 14:40:31,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:31,773 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 887 transitions. [2024-10-24 14:40:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-24 14:40:31,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:31,775 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:31,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:40:31,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1392624259, now seen corresponding path program 1 times [2024-10-24 14:40:31,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:31,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432185211] [2024-10-24 14:40:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:31,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:40:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:40:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-24 14:40:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-24 14:40:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 14:40:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432185211] [2024-10-24 14:40:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432185211] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:32,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454686366] [2024-10-24 14:40:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:32,977 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) [2024-10-24 14:40:32,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:40:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:33,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 14:40:33,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:33,620 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 22 treesize of output 7 [2024-10-24 14:40:34,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 14:40:34,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 43 [2024-10-24 14:40:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:34,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:34,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454686366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:34,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:34,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-10-24 14:40:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872501535] [2024-10-24 14:40:34,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:34,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:40:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:40:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:40:34,362 INFO L87 Difference]: Start difference. First operand 643 states and 887 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:36,209 INFO L93 Difference]: Finished difference Result 1298 states and 1779 transitions. [2024-10-24 14:40:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:40:36,209 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2024-10-24 14:40:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:36,213 INFO L225 Difference]: With dead ends: 1298 [2024-10-24 14:40:36,213 INFO L226 Difference]: Without dead ends: 746 [2024-10-24 14:40:36,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-10-24 14:40:36,215 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 729 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:36,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3047 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-24 14:40:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-10-24 14:40:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 675. [2024-10-24 14:40:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 664 states have (on average 1.3644578313253013) internal successors, (906), 664 states have internal predecessors, (906), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 924 transitions. [2024-10-24 14:40:36,236 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 924 transitions. Word has length 181 [2024-10-24 14:40:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:36,236 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 924 transitions. [2024-10-24 14:40:36,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 924 transitions. [2024-10-24 14:40:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-24 14:40:36,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:36,239 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:36,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:40:36,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 14:40:36,445 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:36,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:36,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1047796097, now seen corresponding path program 1 times [2024-10-24 14:40:36,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:36,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035118159] [2024-10-24 14:40:36,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:36,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:36,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 14:40:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:36,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:40:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:36,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-24 14:40:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:36,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-24 14:40:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035118159] [2024-10-24 14:40:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035118159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:36,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:36,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:40:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273101974] [2024-10-24 14:40:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:36,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:36,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:36,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:40:36,745 INFO L87 Difference]: Start difference. First operand 675 states and 924 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:37,059 INFO L93 Difference]: Finished difference Result 1181 states and 1620 transitions. [2024-10-24 14:40:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:40:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2024-10-24 14:40:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:37,063 INFO L225 Difference]: With dead ends: 1181 [2024-10-24 14:40:37,063 INFO L226 Difference]: Without dead ends: 537 [2024-10-24 14:40:37,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:40:37,064 INFO L432 NwaCegarLoop]: 383 mSDtfsCounter, 11 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:37,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1429 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-10-24 14:40:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 535. [2024-10-24 14:40:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 524 states have (on average 1.3282442748091603) internal successors, (696), 524 states have internal predecessors, (696), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 714 transitions. [2024-10-24 14:40:37,079 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 714 transitions. Word has length 181 [2024-10-24 14:40:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:37,079 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 714 transitions. [2024-10-24 14:40:37,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 714 transitions. [2024-10-24 14:40:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-24 14:40:37,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:37,082 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:37,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 14:40:37,082 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:37,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash 301590257, now seen corresponding path program 1 times [2024-10-24 14:40:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476075900] [2024-10-24 14:40:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:38,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:40:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:38,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:40:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:38,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-24 14:40:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:38,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-24 14:40:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 14:40:38,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:38,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476075900] [2024-10-24 14:40:38,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476075900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759658141] [2024-10-24 14:40:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:38,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:38,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:38,099 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) [2024-10-24 14:40:38,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:40:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:38,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 14:40:38,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:38,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759658141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:38,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-24 14:40:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262609007] [2024-10-24 14:40:38,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:38,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:40:38,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:38,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:40:38,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:38,776 INFO L87 Difference]: Start difference. First operand 535 states and 714 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:38,888 INFO L93 Difference]: Finished difference Result 1033 states and 1389 transitions. [2024-10-24 14:40:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:40:38,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 182 [2024-10-24 14:40:38,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:38,891 INFO L225 Difference]: With dead ends: 1033 [2024-10-24 14:40:38,891 INFO L226 Difference]: Without dead ends: 535 [2024-10-24 14:40:38,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:38,893 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 13 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:38,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1047 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:40:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-10-24 14:40:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-10-24 14:40:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 524 states have (on average 1.3244274809160306) internal successors, (694), 524 states have internal predecessors, (694), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 712 transitions. [2024-10-24 14:40:38,908 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 712 transitions. Word has length 182 [2024-10-24 14:40:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:38,908 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 712 transitions. [2024-10-24 14:40:38,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 712 transitions. [2024-10-24 14:40:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-24 14:40:38,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:38,911 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:38,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 14:40:39,111 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,SelfDestructingSolverStorable7 [2024-10-24 14:40:39,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:39,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 621013976, now seen corresponding path program 1 times [2024-10-24 14:40:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260243578] [2024-10-24 14:40:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:39,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:40:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:39,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:40:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:39,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-24 14:40:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:39,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-24 14:40:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:39,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260243578] [2024-10-24 14:40:39,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260243578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:39,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:39,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:40:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324312697] [2024-10-24 14:40:39,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:39,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:40:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:40:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:39,639 INFO L87 Difference]: Start difference. First operand 535 states and 712 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:40,201 INFO L93 Difference]: Finished difference Result 1038 states and 1402 transitions. [2024-10-24 14:40:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:40:40,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 183 [2024-10-24 14:40:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:40,204 INFO L225 Difference]: With dead ends: 1038 [2024-10-24 14:40:40,205 INFO L226 Difference]: Without dead ends: 543 [2024-10-24 14:40:40,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:40,207 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 6 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:40,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1950 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:40:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-10-24 14:40:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 541. [2024-10-24 14:40:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 530 states have (on average 1.320754716981132) internal successors, (700), 530 states have internal predecessors, (700), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 718 transitions. [2024-10-24 14:40:40,225 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 718 transitions. Word has length 183 [2024-10-24 14:40:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:40,225 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 718 transitions. [2024-10-24 14:40:40,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 6 states have internal predecessors, (169), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 718 transitions. [2024-10-24 14:40:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-24 14:40:40,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:40,227 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:40,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:40:40,228 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:40,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1889367030, now seen corresponding path program 1 times [2024-10-24 14:40:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:40,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783507981] [2024-10-24 14:40:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:40,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:40,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:40,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:40:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:40,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-24 14:40:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:40,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-24 14:40:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:40,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783507981] [2024-10-24 14:40:40,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783507981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:40,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:40,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:40:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742852507] [2024-10-24 14:40:40,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:40,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:40:40,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:40:40,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:40,751 INFO L87 Difference]: Start difference. First operand 541 states and 718 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:41,373 INFO L93 Difference]: Finished difference Result 1044 states and 1406 transitions. [2024-10-24 14:40:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:40:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 184 [2024-10-24 14:40:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:41,376 INFO L225 Difference]: With dead ends: 1044 [2024-10-24 14:40:41,376 INFO L226 Difference]: Without dead ends: 553 [2024-10-24 14:40:41,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:41,378 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 10 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:41,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2245 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:40:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-10-24 14:40:41,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 549. [2024-10-24 14:40:41,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 538 states have (on average 1.3197026022304832) internal successors, (710), 538 states have internal predecessors, (710), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 728 transitions. [2024-10-24 14:40:41,392 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 728 transitions. Word has length 184 [2024-10-24 14:40:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:41,392 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 728 transitions. [2024-10-24 14:40:41,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 728 transitions. [2024-10-24 14:40:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-24 14:40:41,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:41,394 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:41,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 14:40:41,395 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:41,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1536243438, now seen corresponding path program 1 times [2024-10-24 14:40:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585680870] [2024-10-24 14:40:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:42,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:42,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:40:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:42,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-24 14:40:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:42,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-24 14:40:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 14:40:42,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585680870] [2024-10-24 14:40:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585680870] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800319061] [2024-10-24 14:40:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:42,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:42,345 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) [2024-10-24 14:40:42,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:40:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:43,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 14:40:43,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 14:40:43,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800319061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2024-10-24 14:40:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071543408] [2024-10-24 14:40:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:43,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 14:40:43,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 14:40:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:40:43,157 INFO L87 Difference]: Start difference. First operand 549 states and 728 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:43,450 INFO L93 Difference]: Finished difference Result 930 states and 1247 transitions. [2024-10-24 14:40:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 14:40:43,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 184 [2024-10-24 14:40:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:43,454 INFO L225 Difference]: With dead ends: 930 [2024-10-24 14:40:43,454 INFO L226 Difference]: Without dead ends: 571 [2024-10-24 14:40:43,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:40:43,455 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 30 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:43,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1737 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-10-24 14:40:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 563. [2024-10-24 14:40:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 552 states have (on average 1.315217391304348) internal successors, (726), 552 states have internal predecessors, (726), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 744 transitions. [2024-10-24 14:40:43,470 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 744 transitions. Word has length 184 [2024-10-24 14:40:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:43,471 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 744 transitions. [2024-10-24 14:40:43,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 744 transitions. [2024-10-24 14:40:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-10-24 14:40:43,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:43,473 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:43,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:40:43,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:43,675 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:43,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1780111202, now seen corresponding path program 1 times [2024-10-24 14:40:43,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:43,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93837319] [2024-10-24 14:40:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:44,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:44,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:40:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:44,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-24 14:40:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:44,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 14:40:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:44,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:44,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93837319] [2024-10-24 14:40:44,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93837319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:44,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:44,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:40:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694726719] [2024-10-24 14:40:44,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:44,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:40:44,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:44,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:40:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:44,379 INFO L87 Difference]: Start difference. First operand 563 states and 744 transitions. Second operand has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:45,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:45,033 INFO L93 Difference]: Finished difference Result 938 states and 1253 transitions. [2024-10-24 14:40:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:40:45,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 185 [2024-10-24 14:40:45,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:45,036 INFO L225 Difference]: With dead ends: 938 [2024-10-24 14:40:45,037 INFO L226 Difference]: Without dead ends: 573 [2024-10-24 14:40:45,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:40:45,038 INFO L432 NwaCegarLoop]: 391 mSDtfsCounter, 22 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:45,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2238 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:40:45,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-10-24 14:40:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 557. [2024-10-24 14:40:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 546 states have (on average 1.3113553113553114) internal successors, (716), 546 states have internal predecessors, (716), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 734 transitions. [2024-10-24 14:40:45,055 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 734 transitions. Word has length 185 [2024-10-24 14:40:45,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:45,056 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 734 transitions. [2024-10-24 14:40:45,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.375) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:45,056 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 734 transitions. [2024-10-24 14:40:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-24 14:40:45,058 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:45,058 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:45,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 14:40:45,059 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:45,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2073218103, now seen corresponding path program 1 times [2024-10-24 14:40:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:45,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336889714] [2024-10-24 14:40:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:45,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:45,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:40:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:45,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 14:40:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:45,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-24 14:40:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:40:45,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336889714] [2024-10-24 14:40:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336889714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:45,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:45,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:40:45,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168506297] [2024-10-24 14:40:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:45,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:40:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:45,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:40:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:45,640 INFO L87 Difference]: Start difference. First operand 557 states and 734 transitions. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:46,199 INFO L93 Difference]: Finished difference Result 937 states and 1250 transitions. [2024-10-24 14:40:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:40:46,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 186 [2024-10-24 14:40:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:46,202 INFO L225 Difference]: With dead ends: 937 [2024-10-24 14:40:46,203 INFO L226 Difference]: Without dead ends: 577 [2024-10-24 14:40:46,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:40:46,204 INFO L432 NwaCegarLoop]: 394 mSDtfsCounter, 17 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:46,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2260 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:40:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-10-24 14:40:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 563. [2024-10-24 14:40:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 552 states have (on average 1.3079710144927537) internal successors, (722), 552 states have internal predecessors, (722), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-24 14:40:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 740 transitions. [2024-10-24 14:40:46,225 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 740 transitions. Word has length 186 [2024-10-24 14:40:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:46,226 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 740 transitions. [2024-10-24 14:40:46,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 7 states have internal predecessors, (172), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 740 transitions. [2024-10-24 14:40:46,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-24 14:40:46,228 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:46,228 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:46,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 14:40:46,229 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:46,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:46,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1876577931, now seen corresponding path program 1 times [2024-10-24 14:40:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:46,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708103958] [2024-10-24 14:40:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:46,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:46,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:47,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 14:40:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:47,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-24 14:40:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:47,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-24 14:40:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 14:40:47,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:47,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708103958] [2024-10-24 14:40:47,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708103958] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:47,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829936985] [2024-10-24 14:40:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:47,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:47,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:47,031 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) [2024-10-24 14:40:47,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:40:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:47,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 14:40:47,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 14:40:47,774 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829936985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:47,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:47,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-24 14:40:47,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997977993] [2024-10-24 14:40:47,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:47,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:40:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:47,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:40:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:47,776 INFO L87 Difference]: Start difference. First operand 563 states and 740 transitions. Second operand has 5 states, 4 states have (on average 44.25) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:47,866 INFO L93 Difference]: Finished difference Result 1096 states and 1455 transitions. [2024-10-24 14:40:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:40:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 44.25) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 187 [2024-10-24 14:40:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:47,871 INFO L225 Difference]: With dead ends: 1096 [2024-10-24 14:40:47,871 INFO L226 Difference]: Without dead ends: 627 [2024-10-24 14:40:47,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:40:47,872 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 366 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:47,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1559 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:40:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-10-24 14:40:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 565. [2024-10-24 14:40:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 553 states have (on average 1.3092224231464737) internal successors, (724), 554 states have internal predecessors, (724), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:40:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 745 transitions. [2024-10-24 14:40:47,893 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 745 transitions. Word has length 187 [2024-10-24 14:40:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:47,893 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 745 transitions. [2024-10-24 14:40:47,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 44.25) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-24 14:40:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 745 transitions. [2024-10-24 14:40:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-24 14:40:47,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:47,896 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:47,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 14:40:48,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:48,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:48,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:48,098 INFO L85 PathProgramCache]: Analyzing trace with hash -187335733, now seen corresponding path program 1 times [2024-10-24 14:40:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250531398] [2024-10-24 14:40:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:48,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:49,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-24 14:40:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:49,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:40:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:49,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-24 14:40:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:49,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-24 14:40:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 14:40:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250531398] [2024-10-24 14:40:49,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250531398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:40:49,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693406418] [2024-10-24 14:40:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:49,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:40:49,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:40:49,329 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) [2024-10-24 14:40:49,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 14:40:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:50,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 14:40:50,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:40:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 14:40:50,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:40:50,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693406418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:50,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:40:50,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-24 14:40:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637806708] [2024-10-24 14:40:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:50,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:40:50,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:40:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:40:50,350 INFO L87 Difference]: Start difference. First operand 565 states and 745 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:50,728 INFO L93 Difference]: Finished difference Result 1086 states and 1444 transitions. [2024-10-24 14:40:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:40:50,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 191 [2024-10-24 14:40:50,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:50,734 INFO L225 Difference]: With dead ends: 1086 [2024-10-24 14:40:50,734 INFO L226 Difference]: Without dead ends: 575 [2024-10-24 14:40:50,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:40:50,737 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 8 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:50,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1964 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:40:50,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-10-24 14:40:50,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 565. [2024-10-24 14:40:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 553 states have (on average 1.3092224231464737) internal successors, (724), 554 states have internal predecessors, (724), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:40:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 745 transitions. [2024-10-24 14:40:50,755 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 745 transitions. Word has length 191 [2024-10-24 14:40:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:50,755 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 745 transitions. [2024-10-24 14:40:50,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 745 transitions. [2024-10-24 14:40:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-24 14:40:50,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:50,757 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:50,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 14:40:50,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 14:40:50,962 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:50,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2131042765, now seen corresponding path program 1 times [2024-10-24 14:40:50,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:50,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280609516] [2024-10-24 14:40:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:50,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:51,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:40:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:51,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:40:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:51,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-24 14:40:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:51,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-24 14:40:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:40:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 14:40:51,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:40:51,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280609516] [2024-10-24 14:40:51,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280609516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:40:51,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:40:51,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:40:51,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720381398] [2024-10-24 14:40:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:40:51,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:40:51,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:40:51,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:40:51,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:40:51,557 INFO L87 Difference]: Start difference. First operand 565 states and 745 transitions. Second operand has 10 states, 10 states have (on average 17.5) internal successors, (175), 9 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:40:52,188 INFO L93 Difference]: Finished difference Result 1091 states and 1448 transitions. [2024-10-24 14:40:52,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:40:52,189 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 9 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 192 [2024-10-24 14:40:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:40:52,192 INFO L225 Difference]: With dead ends: 1091 [2024-10-24 14:40:52,192 INFO L226 Difference]: Without dead ends: 585 [2024-10-24 14:40:52,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:40:52,194 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 18 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:40:52,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2943 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:40:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-10-24 14:40:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 579. [2024-10-24 14:40:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 567 states have (on average 1.308641975308642) internal successors, (742), 568 states have internal predecessors, (742), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:40:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 763 transitions. [2024-10-24 14:40:52,209 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 763 transitions. Word has length 192 [2024-10-24 14:40:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:40:52,210 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 763 transitions. [2024-10-24 14:40:52,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.5) internal successors, (175), 9 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:40:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 763 transitions. [2024-10-24 14:40:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-10-24 14:40:52,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:40:52,211 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:40:52,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:40:52,211 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:40:52,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:40:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1143166799, now seen corresponding path program 1 times [2024-10-24 14:40:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:40:52,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949531587] [2024-10-24 14:40:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:40:52,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:40:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:01,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:41:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:01,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:41:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:01,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-24 14:41:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:01,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-24 14:41:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 14:41:01,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:41:01,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949531587] [2024-10-24 14:41:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949531587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:41:01,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426790735] [2024-10-24 14:41:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:01,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:41:01,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:41:01,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:41:01,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 14:41:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:02,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 14:41:02,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:41:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 14:41:02,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:41:02,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426790735] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:41:02,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:41:02,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 24 [2024-10-24 14:41:02,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471964209] [2024-10-24 14:41:02,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:41:02,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:41:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:41:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:41:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2024-10-24 14:41:02,996 INFO L87 Difference]: Start difference. First operand 579 states and 763 transitions. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:41:03,561 INFO L93 Difference]: Finished difference Result 1112 states and 1475 transitions. [2024-10-24 14:41:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:41:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 192 [2024-10-24 14:41:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:41:03,565 INFO L225 Difference]: With dead ends: 1112 [2024-10-24 14:41:03,565 INFO L226 Difference]: Without dead ends: 599 [2024-10-24 14:41:03,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2024-10-24 14:41:03,567 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 13 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:41:03,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2009 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:41:03,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-10-24 14:41:03,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 589. [2024-10-24 14:41:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 577 states have (on average 1.3067590987868285) internal successors, (754), 578 states have internal predecessors, (754), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:41:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 775 transitions. [2024-10-24 14:41:03,589 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 775 transitions. Word has length 192 [2024-10-24 14:41:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:41:03,589 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 775 transitions. [2024-10-24 14:41:03,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 775 transitions. [2024-10-24 14:41:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-24 14:41:03,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:41:03,591 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:41:03,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 14:41:03,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-24 14:41:03,792 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:41:03,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:41:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -440053157, now seen corresponding path program 1 times [2024-10-24 14:41:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:41:03,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525084314] [2024-10-24 14:41:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:41:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:04,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:41:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:04,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:41:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:04,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 14:41:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:04,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-24 14:41:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 14:41:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:41:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525084314] [2024-10-24 14:41:04,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525084314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:41:04,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:41:04,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:41:04,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108199421] [2024-10-24 14:41:04,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:41:04,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:41:04,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:41:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:41:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:41:04,506 INFO L87 Difference]: Start difference. First operand 589 states and 775 transitions. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:41:05,191 INFO L93 Difference]: Finished difference Result 1130 states and 1499 transitions. [2024-10-24 14:41:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:41:05,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 193 [2024-10-24 14:41:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:41:05,194 INFO L225 Difference]: With dead ends: 1130 [2024-10-24 14:41:05,195 INFO L226 Difference]: Without dead ends: 607 [2024-10-24 14:41:05,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:41:05,196 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 21 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:41:05,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3261 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:41:05,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-10-24 14:41:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 595. [2024-10-24 14:41:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 583 states have (on average 1.3036020583190395) internal successors, (760), 584 states have internal predecessors, (760), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:41:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 781 transitions. [2024-10-24 14:41:05,211 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 781 transitions. Word has length 193 [2024-10-24 14:41:05,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:41:05,211 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 781 transitions. [2024-10-24 14:41:05,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 10 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 781 transitions. [2024-10-24 14:41:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-24 14:41:05,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:41:05,213 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:41:05,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 14:41:05,213 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:41:05,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:41:05,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1138665463, now seen corresponding path program 1 times [2024-10-24 14:41:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:41:05,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946757613] [2024-10-24 14:41:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:41:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:06,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:41:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:06,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:41:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:06,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 14:41:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:06,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-24 14:41:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 14:41:06,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:41:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946757613] [2024-10-24 14:41:06,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946757613] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:41:06,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886464797] [2024-10-24 14:41:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:06,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:41:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:41:06,214 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:41:06,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 14:41:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:07,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 14:41:07,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:41:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 14:41:07,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:41:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886464797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:41:07,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:41:07,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-10-24 14:41:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117806603] [2024-10-24 14:41:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:41:07,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:41:07,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:41:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:41:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:41:07,695 INFO L87 Difference]: Start difference. First operand 595 states and 781 transitions. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:41:08,406 INFO L93 Difference]: Finished difference Result 1141 states and 1513 transitions. [2024-10-24 14:41:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:41:08,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 193 [2024-10-24 14:41:08,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:41:08,410 INFO L225 Difference]: With dead ends: 1141 [2024-10-24 14:41:08,410 INFO L226 Difference]: Without dead ends: 615 [2024-10-24 14:41:08,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:41:08,411 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 13 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:41:08,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2977 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:41:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-10-24 14:41:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 609. [2024-10-24 14:41:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 597 states have (on average 1.3031825795644891) internal successors, (778), 598 states have internal predecessors, (778), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:41:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 799 transitions. [2024-10-24 14:41:08,426 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 799 transitions. Word has length 193 [2024-10-24 14:41:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:41:08,427 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 799 transitions. [2024-10-24 14:41:08,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 799 transitions. [2024-10-24 14:41:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-24 14:41:08,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:41:08,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:41:08,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 14:41:08,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:41:08,629 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:41:08,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:41:08,630 INFO L85 PathProgramCache]: Analyzing trace with hash -645140617, now seen corresponding path program 1 times [2024-10-24 14:41:08,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:41:08,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138086551] [2024-10-24 14:41:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:08,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:41:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:09,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:41:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:09,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:41:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:09,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 14:41:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:09,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-24 14:41:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:09,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 14:41:09,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:41:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138086551] [2024-10-24 14:41:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138086551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:41:09,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907641876] [2024-10-24 14:41:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:09,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:41:09,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:41:09,544 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:41:09,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 14:41:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:10,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 14:41:10,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:41:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 14:41:10,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:41:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907641876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:41:10,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:41:10,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-10-24 14:41:10,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770066260] [2024-10-24 14:41:10,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:41:10,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:41:10,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:41:10,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:41:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:41:10,496 INFO L87 Difference]: Start difference. First operand 609 states and 799 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:41:10,750 INFO L93 Difference]: Finished difference Result 1147 states and 1517 transitions. [2024-10-24 14:41:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:41:10,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 193 [2024-10-24 14:41:10,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:41:10,755 INFO L225 Difference]: With dead ends: 1147 [2024-10-24 14:41:10,756 INFO L226 Difference]: Without dead ends: 619 [2024-10-24 14:41:10,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:41:10,758 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 31 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:41:10,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1975 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:41:10,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-10-24 14:41:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 613. [2024-10-24 14:41:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 601 states have (on average 1.3011647254575707) internal successors, (782), 602 states have internal predecessors, (782), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-24 14:41:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 803 transitions. [2024-10-24 14:41:10,778 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 803 transitions. Word has length 193 [2024-10-24 14:41:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:41:10,779 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 803 transitions. [2024-10-24 14:41:10,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-24 14:41:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 803 transitions. [2024-10-24 14:41:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-24 14:41:10,781 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:41:10,781 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:41:10,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 14:41:10,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:41:10,982 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:41:10,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:41:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1800750064, now seen corresponding path program 1 times [2024-10-24 14:41:10,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:41:10,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372645220] [2024-10-24 14:41:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:41:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:11,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:41:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:11,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:41:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:11,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-24 14:41:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:11,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-24 14:41:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 14:41:11,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:41:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372645220] [2024-10-24 14:41:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372645220] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:41:11,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480487364] [2024-10-24 14:41:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:41:11,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:41:11,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:41:11,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:41:11,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 14:41:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:41:12,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 259 conjuncts are in the unsatisfiable core [2024-10-24 14:41:12,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:41:12,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 14:41:12,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-10-24 14:41:13,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-10-24 14:41:13,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2024-10-24 14:41:13,454 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-10-24 14:41:13,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-10-24 14:41:13,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-10-24 14:41:13,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-10-24 14:41:13,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-24 14:41:13,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-10-24 14:41:13,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-24 14:41:13,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 14:41:13,748 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-10-24 14:41:13,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 57 [2024-10-24 14:41:13,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-10-24 14:41:13,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2024-10-24 14:41:23,033 INFO L224 Elim1Store]: Index analysis took 223 ms