./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_14_unsafe.c-amalgamation.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/neural-networks/lunarlander_14_unsafe.c-amalgamation.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 ccc0799f589f5a844f59a786862d06b540276d9c4d37670fd3c72ae390da9f5f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:59:28,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:59:28,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:59:28,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:59:28,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:59:29,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:59:29,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:59:29,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:59:29,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:59:29,017 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:59:29,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:59:29,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:59:29,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:59:29,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:59:29,022 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:59:29,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:59:29,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:59:29,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:59:29,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:59:29,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:59:29,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:59:29,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:59:29,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:59:29,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:59:29,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:59:29,026 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:59:29,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:59:29,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:59:29,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:59:29,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:59:29,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:59:29,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:59:29,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:59:29,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:59:29,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:59:29,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:59:29,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:59:29,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:59:29,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:59:29,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:59:29,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:59:29,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:59:29,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc0799f589f5a844f59a786862d06b540276d9c4d37670fd3c72ae390da9f5f [2024-10-23 22:59:29,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:59:29,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:59:29,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:59:29,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:59:29,330 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:59:29,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_14_unsafe.c-amalgamation.i [2024-10-23 22:59:30,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:59:31,159 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:59:31,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_14_unsafe.c-amalgamation.i [2024-10-23 22:59:31,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f82c299/4bd47ae03e564b7d8c9114f07e63c8e6/FLAGd54f5e053 [2024-10-23 22:59:31,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f82c299/4bd47ae03e564b7d8c9114f07e63c8e6 [2024-10-23 22:59:31,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:59:31,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:59:31,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:59:31,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:59:31,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:59:31,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:59:31" (1/1) ... [2024-10-23 22:59:31,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2487d134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:31, skipping insertion in model container [2024-10-23 22:59:31,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:59:31" (1/1) ... [2024-10-23 22:59:31,308 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:59:31,952 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/neural-networks/lunarlander_14_unsafe.c-amalgamation.i[64328,64341] [2024-10-23 22:59:32,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:59:32,251 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:59:32,313 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/neural-networks/lunarlander_14_unsafe.c-amalgamation.i[64328,64341] [2024-10-23 22:59:32,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:59:32,706 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:59:32,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32 WrapperNode [2024-10-23 22:59:32,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:59:32,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:59:32,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:59:32,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:59:32,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:32,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,227 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-23 22:59:33,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:59:33,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:59:33,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:59:33,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:59:33,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,423 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 4097, 65, 257, 5, 14, 70, 25, 3]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 4096, 64, 256, 4, 8, 64, 0, 0]. The 14 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 3, 2, 8, 1]. [2024-10-23 22:59:33,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:59:33,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:59:33,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:59:33,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:59:33,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (1/1) ... [2024-10-23 22:59:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:59:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:59:33,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 22:59:33,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 22:59:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:59:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:59:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:59:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:59:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 22:59:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 22:59:33,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 22:59:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 22:59:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 22:59:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 22:59:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 22:59:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 22:59:33,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:59:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 22:59:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 22:59:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 22:59:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 22:59:33,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 22:59:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 22:59:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:59:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:59:33,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 22:59:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 22:59:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 22:59:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 22:59:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 22:59:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 22:59:34,025 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:59:34,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:59:40,826 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-23 22:59:40,826 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:59:41,178 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:59:41,178 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 22:59:41,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:59:41 BoogieIcfgContainer [2024-10-23 22:59:41,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:59:41,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:59:41,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:59:41,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:59:41,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:59:31" (1/3) ... [2024-10-23 22:59:41,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7376be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:59:41, skipping insertion in model container [2024-10-23 22:59:41,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:59:32" (2/3) ... [2024-10-23 22:59:41,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7376be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:59:41, skipping insertion in model container [2024-10-23 22:59:41,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:59:41" (3/3) ... [2024-10-23 22:59:41,190 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_14_unsafe.c-amalgamation.i [2024-10-23 22:59:41,208 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:59:41,208 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:59:41,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:59:41,283 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;@bf727ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:59:41,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:59:41,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:41,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 22:59:41,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:41,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:41,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:41,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-23 22:59:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496652278] [2024-10-23 22:59:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:59:42,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496652278] [2024-10-23 22:59:42,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496652278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:59:42,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:59:42,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:59:42,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112213859] [2024-10-23 22:59:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:42,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:59:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:42,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:59:42,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:59:42,606 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:42,946 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-23 22:59:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:59:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2024-10-23 22:59:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:42,957 INFO L225 Difference]: With dead ends: 113 [2024-10-23 22:59:42,957 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 22:59:42,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:59:42,964 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:42,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:59:42,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 22:59:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 22:59:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-23 22:59:43,002 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-23 22:59:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:43,002 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-23 22:59:43,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:43,004 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-23 22:59:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 22:59:43,005 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:43,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:43,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:59:43,007 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:43,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-23 22:59:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522720744] [2024-10-23 22:59:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:59:43,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522720744] [2024-10-23 22:59:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522720744] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:59:43,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:59:43,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:59:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967707842] [2024-10-23 22:59:43,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:43,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:59:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:59:43,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:59:43,988 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:44,454 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-23 22:59:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:59:44,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-23 22:59:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:44,456 INFO L225 Difference]: With dead ends: 104 [2024-10-23 22:59:44,456 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 22:59:44,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:59:44,458 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:44,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 22:59:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 22:59:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 22:59:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-23 22:59:44,464 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-23 22:59:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:44,465 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-23 22:59:44,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-23 22:59:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 22:59:44,466 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:44,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:44,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:59:44,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:44,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-23 22:59:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:44,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876692788] [2024-10-23 22:59:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:44,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:59:45,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:45,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876692788] [2024-10-23 22:59:45,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876692788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:59:45,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:59:45,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:59:45,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560477270] [2024-10-23 22:59:45,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:45,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:59:45,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:45,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:59:45,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:59:45,662 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:46,227 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-23 22:59:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:59:46,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-10-23 22:59:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:46,229 INFO L225 Difference]: With dead ends: 87 [2024-10-23 22:59:46,231 INFO L226 Difference]: Without dead ends: 57 [2024-10-23 22:59:46,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:59:46,232 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:46,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 22:59:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-23 22:59:46,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-23 22:59:46,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-23 22:59:46,240 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-23 22:59:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:46,241 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-23 22:59:46,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-23 22:59:46,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 22:59:46,242 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:46,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:46,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 22:59:46,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:46,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-23 22:59:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:46,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894311281] [2024-10-23 22:59:46,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:46,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:59:47,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:47,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894311281] [2024-10-23 22:59:47,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894311281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313973232] [2024-10-23 22:59:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:47,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:47,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:59:47,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:59:47,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 22:59:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:49,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:59:49,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:59:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:59:49,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:59:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:59:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313973232] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:49,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:59:49,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:59:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428774250] [2024-10-23 22:59:49,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:49,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:59:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:49,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:59:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:59:49,175 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:49,608 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-23 22:59:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:59:49,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-10-23 22:59:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:49,610 INFO L225 Difference]: With dead ends: 78 [2024-10-23 22:59:49,610 INFO L226 Difference]: Without dead ends: 58 [2024-10-23 22:59:49,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:59:49,611 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:49,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:59:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-23 22:59:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-23 22:59:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-23 22:59:49,616 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-23 22:59:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:49,617 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-23 22:59:49,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-23 22:59:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 22:59:49,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:49,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:49,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 22:59:49,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:49,819 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:49,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:49,820 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-23 22:59:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:49,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029302922] [2024-10-23 22:59:49,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:49,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:59:51,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:51,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029302922] [2024-10-23 22:59:51,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029302922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:51,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393277774] [2024-10-23 22:59:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:51,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:51,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:59:51,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:59:51,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 22:59:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:52,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:59:52,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:59:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:59:52,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:59:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:59:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393277774] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:59:52,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:59:52,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722496687] [2024-10-23 22:59:52,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:52,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:59:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:59:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:59:52,796 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:53,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:53,121 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-23 22:59:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:59:53,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2024-10-23 22:59:53,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:53,123 INFO L225 Difference]: With dead ends: 69 [2024-10-23 22:59:53,123 INFO L226 Difference]: Without dead ends: 59 [2024-10-23 22:59:53,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:59:53,124 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:53,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:59:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-23 22:59:53,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-23 22:59:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-23 22:59:53,130 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-23 22:59:53,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:53,130 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-23 22:59:53,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:53,131 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-23 22:59:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 22:59:53,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:53,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:53,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 22:59:53,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:53,333 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:53,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:53,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-23 22:59:53,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:53,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010692065] [2024-10-23 22:59:53,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:53,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:59:54,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:54,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010692065] [2024-10-23 22:59:54,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010692065] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:54,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163723704] [2024-10-23 22:59:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:54,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:54,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:59:54,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:59:54,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 22:59:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:55,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:59:55,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:59:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:59:55,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:59:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:59:55,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163723704] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:55,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:59:55,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:59:55,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529672487] [2024-10-23 22:59:55,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:55,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:59:55,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:59:55,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:59:55,904 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:56,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:56,215 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-23 22:59:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:59:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2024-10-23 22:59:56,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:56,216 INFO L225 Difference]: With dead ends: 86 [2024-10-23 22:59:56,216 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 22:59:56,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:59:56,218 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:56,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:59:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 22:59:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 22:59:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-23 22:59:56,229 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-23 22:59:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:56,230 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-23 22:59:56,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-23 22:59:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-23 22:59:56,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:56,232 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:56,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 22:59:56,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:56,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:56,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-23 22:59:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:56,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319746136] [2024-10-23 22:59:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:59:57,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:59:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319746136] [2024-10-23 22:59:57,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319746136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110093484] [2024-10-23 22:59:57,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:57,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:57,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:59:57,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:59:57,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 22:59:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:59:58,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:59:58,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:59:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:59:58,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:59:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:59:58,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110093484] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:59:58,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:59:58,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:59:58,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565939935] [2024-10-23 22:59:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:59:58,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:59:58,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:59:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:59:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:59:58,867 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:59:59,267 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-23 22:59:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:59:59,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-10-23 22:59:59,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:59:59,268 INFO L225 Difference]: With dead ends: 76 [2024-10-23 22:59:59,268 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 22:59:59,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:59:59,269 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:59:59,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:59:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 22:59:59,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 22:59:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-23 22:59:59,280 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-23 22:59:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:59:59,280 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-23 22:59:59,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:59:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-23 22:59:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 22:59:59,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:59:59,283 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:59:59,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 22:59:59,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:59:59,484 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:59:59,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:59:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-23 22:59:59,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:59:59,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756819993] [2024-10-23 22:59:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:59:59,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:59:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:00:00,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756819993] [2024-10-23 23:00:00,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756819993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232376141] [2024-10-23 23:00:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:00,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:00,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:00,643 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) [2024-10-23 23:00:00,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 23:00:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:01,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:00:01,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:00:01,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:00:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232376141] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:01,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:00:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62120105] [2024-10-23 23:00:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:01,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:00:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:00:01,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:00:01,855 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:02,148 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-23 23:00:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:00:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-23 23:00:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:02,150 INFO L225 Difference]: With dead ends: 66 [2024-10-23 23:00:02,150 INFO L226 Difference]: Without dead ends: 62 [2024-10-23 23:00:02,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:00:02,151 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:02,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:00:02,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-23 23:00:02,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-23 23:00:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-23 23:00:02,156 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-23 23:00:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:02,156 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-23 23:00:02,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-23 23:00:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-23 23:00:02,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:02,158 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:00:02,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 23:00:02,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:02,359 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:02,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-23 23:00:02,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:02,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625211164] [2024-10-23 23:00:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:02,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:00:03,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625211164] [2024-10-23 23:00:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625211164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:03,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612145715] [2024-10-23 23:00:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:03,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:03,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:03,260 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) [2024-10-23 23:00:03,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 23:00:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:04,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 23:00:04,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:00:04,423 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:00:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612145715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:00:04,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:00:04,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 23:00:04,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516254457] [2024-10-23 23:00:04,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:00:04,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 23:00:04,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:04,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 23:00:04,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:00:04,456 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:04,961 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2024-10-23 23:00:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 23:00:04,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-23 23:00:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:04,963 INFO L225 Difference]: With dead ends: 107 [2024-10-23 23:00:04,963 INFO L226 Difference]: Without dead ends: 72 [2024-10-23 23:00:04,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 23:00:04,964 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:04,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:00:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-23 23:00:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-23 23:00:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-10-23 23:00:04,975 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2024-10-23 23:00:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:04,976 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-10-23 23:00:04,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-10-23 23:00:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-23 23:00:04,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:04,977 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-23 23:00:05,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-23 23:00:05,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:05,178 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:05,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2024-10-23 23:00:05,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:05,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099050861] [2024-10-23 23:00:05,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:05,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:00:06,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:06,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099050861] [2024-10-23 23:00:06,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099050861] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103573124] [2024-10-23 23:00:06,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:00:06,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:06,168 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) [2024-10-23 23:00:06,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 23:00:07,315 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:00:07,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:00:07,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 6052 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-23 23:00:07,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:00:07,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-23 23:00:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103573124] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:07,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2024-10-23 23:00:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192754803] [2024-10-23 23:00:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:07,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:00:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:00:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:00:07,442 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:07,937 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2024-10-23 23:00:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:00:07,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 65 [2024-10-23 23:00:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:07,939 INFO L225 Difference]: With dead ends: 82 [2024-10-23 23:00:07,939 INFO L226 Difference]: Without dead ends: 73 [2024-10-23 23:00:07,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:00:07,940 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:07,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:00:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-23 23:00:07,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-23 23:00:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-23 23:00:07,945 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2024-10-23 23:00:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:07,946 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-23 23:00:07,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-23 23:00:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-23 23:00:07,947 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:07,947 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-23 23:00:07,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 23:00:08,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:08,148 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:08,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:08,148 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2024-10-23 23:00:08,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:08,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104461522] [2024-10-23 23:00:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:08,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 23:00:09,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104461522] [2024-10-23 23:00:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104461522] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087209260] [2024-10-23 23:00:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:09,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:09,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:09,110 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) [2024-10-23 23:00:09,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 23:00:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:10,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 6066 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:00:10,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:00:10,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 23:00:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087209260] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:00:10,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:00:10,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 23:00:10,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355444007] [2024-10-23 23:00:10,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:00:10,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 23:00:10,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:10,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 23:00:10,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 23:00:10,345 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:10,806 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2024-10-23 23:00:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 23:00:10,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 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 68 [2024-10-23 23:00:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:10,807 INFO L225 Difference]: With dead ends: 128 [2024-10-23 23:00:10,807 INFO L226 Difference]: Without dead ends: 83 [2024-10-23 23:00:10,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-23 23:00:10,808 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 15 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:10,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 219 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:00:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-23 23:00:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-23 23:00:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-23 23:00:10,814 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2024-10-23 23:00:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:10,815 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-23 23:00:10,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-23 23:00:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-23 23:00:10,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:10,816 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:00:10,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 23:00:11,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 23:00:11,017 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:11,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2024-10-23 23:00:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:11,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275450959] [2024-10-23 23:00:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 23:00:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:12,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275450959] [2024-10-23 23:00:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275450959] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:12,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66588753] [2024-10-23 23:00:12,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:00:12,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:12,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:12,172 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) [2024-10-23 23:00:12,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 23:00:13,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:00:13,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:00:13,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 6131 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 23:00:13,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 23:00:13,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 23:00:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66588753] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:00:13,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:00:13,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2024-10-23 23:00:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636491410] [2024-10-23 23:00:13,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:00:13,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 23:00:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:13,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 23:00:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-23 23:00:13,582 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:14,717 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2024-10-23 23:00:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-23 23:00:14,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 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 78 [2024-10-23 23:00:14,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:14,719 INFO L225 Difference]: With dead ends: 146 [2024-10-23 23:00:14,719 INFO L226 Difference]: Without dead ends: 92 [2024-10-23 23:00:14,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 23:00:14,720 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:14,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 552 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 23:00:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-23 23:00:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-10-23 23:00:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 89 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2024-10-23 23:00:14,726 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 78 [2024-10-23 23:00:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:14,727 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2024-10-23 23:00:14,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2024-10-23 23:00:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-23 23:00:14,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:14,728 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 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] [2024-10-23 23:00:14,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 23:00:14,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:14,929 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:14,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1427743436, now seen corresponding path program 3 times [2024-10-23 23:00:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118008701] [2024-10-23 23:00:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-23 23:00:16,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118008701] [2024-10-23 23:00:16,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118008701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:16,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556076030] [2024-10-23 23:00:16,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:00:16,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:16,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:16,268 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:16,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 23:00:17,614 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 23:00:17,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:00:17,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-23 23:00:17,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 23:00:17,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:00:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556076030] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:17,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:17,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2024-10-23 23:00:17,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619305225] [2024-10-23 23:00:17,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:17,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 23:00:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:17,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 23:00:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:00:17,749 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:18,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:18,220 INFO L93 Difference]: Finished difference Result 149 states and 198 transitions. [2024-10-23 23:00:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:00:18,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 85 [2024-10-23 23:00:18,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:18,221 INFO L225 Difference]: With dead ends: 149 [2024-10-23 23:00:18,222 INFO L226 Difference]: Without dead ends: 91 [2024-10-23 23:00:18,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:00:18,223 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:18,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 213 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:00:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-23 23:00:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-23 23:00:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2024-10-23 23:00:18,229 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 85 [2024-10-23 23:00:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:18,229 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2024-10-23 23:00:18,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2024-10-23 23:00:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-23 23:00:18,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:18,231 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 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] [2024-10-23 23:00:18,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 23:00:18,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 23:00:18,431 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:18,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash -254940994, now seen corresponding path program 1 times [2024-10-23 23:00:18,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814494457] [2024-10-23 23:00:18,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-23 23:00:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814494457] [2024-10-23 23:00:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814494457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:19,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946118145] [2024-10-23 23:00:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:19,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:19,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:19,577 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:19,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 23:00:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:20,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 6188 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:00:20,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:00:20,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 23:00:20,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946118145] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:20,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:20,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 23:00:20,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940548585] [2024-10-23 23:00:20,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:20,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:00:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:20,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:00:20,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:00:20,952 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:21,376 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2024-10-23 23:00:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:00:21,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 88 [2024-10-23 23:00:21,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:21,378 INFO L225 Difference]: With dead ends: 126 [2024-10-23 23:00:21,378 INFO L226 Difference]: Without dead ends: 92 [2024-10-23 23:00:21,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:00:21,379 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:21,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:00:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-23 23:00:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-23 23:00:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2024-10-23 23:00:21,385 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 88 [2024-10-23 23:00:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:21,385 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2024-10-23 23:00:21,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2024-10-23 23:00:21,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-23 23:00:21,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:21,386 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 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] [2024-10-23 23:00:21,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-23 23:00:21,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 23:00:21,587 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:21,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1646108218, now seen corresponding path program 1 times [2024-10-23 23:00:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491363884] [2024-10-23 23:00:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-23 23:00:22,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491363884] [2024-10-23 23:00:22,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491363884] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:22,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117871556] [2024-10-23 23:00:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:22,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:22,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:22,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 23:00:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:23,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 6202 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:00:23,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:00:23,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 23:00:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117871556] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 23:00:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600498033] [2024-10-23 23:00:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:23,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:00:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:00:23,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:00:23,802 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:24,190 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2024-10-23 23:00:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:00:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 91 [2024-10-23 23:00:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:24,191 INFO L225 Difference]: With dead ends: 128 [2024-10-23 23:00:24,191 INFO L226 Difference]: Without dead ends: 93 [2024-10-23 23:00:24,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:00:24,192 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:24,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:00:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-23 23:00:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-23 23:00:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.315217391304348) internal successors, (121), 92 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 121 transitions. [2024-10-23 23:00:24,198 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 121 transitions. Word has length 91 [2024-10-23 23:00:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:24,198 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 121 transitions. [2024-10-23 23:00:24,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 121 transitions. [2024-10-23 23:00:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-23 23:00:24,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:24,200 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 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] [2024-10-23 23:00:24,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-23 23:00:24,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 23:00:24,400 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:24,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -613875054, now seen corresponding path program 1 times [2024-10-23 23:00:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382211731] [2024-10-23 23:00:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 23:00:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382211731] [2024-10-23 23:00:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382211731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164796733] [2024-10-23 23:00:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:25,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:25,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:25,347 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:25,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 23:00:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:26,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 6205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:00:26,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-23 23:00:26,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-23 23:00:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164796733] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 23:00:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860460546] [2024-10-23 23:00:26,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:26,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:00:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:00:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:00:26,650 INFO L87 Difference]: Start difference. First operand 93 states and 121 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:26,978 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2024-10-23 23:00:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:00:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 92 [2024-10-23 23:00:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:26,979 INFO L225 Difference]: With dead ends: 108 [2024-10-23 23:00:26,979 INFO L226 Difference]: Without dead ends: 95 [2024-10-23 23:00:26,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:00:26,980 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:26,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:00:26,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-23 23:00:26,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-23 23:00:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 94 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2024-10-23 23:00:26,986 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 92 [2024-10-23 23:00:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:26,987 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2024-10-23 23:00:26,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2024-10-23 23:00:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-23 23:00:26,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:26,988 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 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] [2024-10-23 23:00:27,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-23 23:00:27,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 23:00:27,189 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:27,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1906087440, now seen corresponding path program 1 times [2024-10-23 23:00:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:27,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534994069] [2024-10-23 23:00:27,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:00:28,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:28,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534994069] [2024-10-23 23:00:28,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534994069] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:28,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771627257] [2024-10-23 23:00:28,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:28,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:28,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:28,203 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:28,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 23:00:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:29,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 6211 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 23:00:29,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:00:29,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 23:00:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771627257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:00:29,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:00:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2024-10-23 23:00:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137036228] [2024-10-23 23:00:29,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:00:29,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-23 23:00:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:29,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-23 23:00:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-23 23:00:29,734 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:31,613 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2024-10-23 23:00:31,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 23:00:31,613 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 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 94 [2024-10-23 23:00:31,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:31,614 INFO L225 Difference]: With dead ends: 181 [2024-10-23 23:00:31,614 INFO L226 Difference]: Without dead ends: 116 [2024-10-23 23:00:31,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-10-23 23:00:31,615 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:31,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 946 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 23:00:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-23 23:00:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-10-23 23:00:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 113 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2024-10-23 23:00:31,621 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 94 [2024-10-23 23:00:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:31,621 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2024-10-23 23:00:31,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:31,621 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2024-10-23 23:00:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-23 23:00:31,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:31,622 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 2, 2, 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] [2024-10-23 23:00:31,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-23 23:00:31,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:31,823 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:31,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:31,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1649604661, now seen corresponding path program 2 times [2024-10-23 23:00:31,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:31,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338699618] [2024-10-23 23:00:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-23 23:00:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338699618] [2024-10-23 23:00:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338699618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807015116] [2024-10-23 23:00:32,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:00:32,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:32,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:32,985 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:32,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 23:00:34,320 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:00:34,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:00:34,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 6330 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-23 23:00:34,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 23:00:34,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 23:00:34,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807015116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:00:34,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:00:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 26 [2024-10-23 23:00:34,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628404739] [2024-10-23 23:00:34,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:00:34,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-23 23:00:34,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:34,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-23 23:00:34,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-10-23 23:00:34,689 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:36,472 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2024-10-23 23:00:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-23 23:00:36,472 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 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 113 [2024-10-23 23:00:36,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:36,473 INFO L225 Difference]: With dead ends: 219 [2024-10-23 23:00:36,473 INFO L226 Difference]: Without dead ends: 136 [2024-10-23 23:00:36,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-10-23 23:00:36,474 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 64 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:36,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 929 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 23:00:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-23 23:00:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-10-23 23:00:36,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 135 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 177 transitions. [2024-10-23 23:00:36,481 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 177 transitions. Word has length 113 [2024-10-23 23:00:36,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:36,482 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 177 transitions. [2024-10-23 23:00:36,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 177 transitions. [2024-10-23 23:00:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-23 23:00:36,482 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:36,482 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 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] [2024-10-23 23:00:36,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-23 23:00:36,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 23:00:36,683 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:36,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:36,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168043, now seen corresponding path program 3 times [2024-10-23 23:00:36,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:36,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116538368] [2024-10-23 23:00:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:36,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-10-23 23:00:37,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:37,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116538368] [2024-10-23 23:00:37,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116538368] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:37,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880816966] [2024-10-23 23:00:37,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:00:37,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:37,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:37,892 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:37,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 23:00:39,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 23:00:39,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:00:39,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 6098 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 23:00:39,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2024-10-23 23:00:39,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-10-23 23:00:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880816966] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:00:39,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2024-10-23 23:00:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919184422] [2024-10-23 23:00:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:00:39,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 23:00:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 23:00:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-23 23:00:39,867 INFO L87 Difference]: Start difference. First operand 136 states and 177 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:00:40,247 INFO L93 Difference]: Finished difference Result 239 states and 314 transitions. [2024-10-23 23:00:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:00:40,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 135 [2024-10-23 23:00:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:00:40,248 INFO L225 Difference]: With dead ends: 239 [2024-10-23 23:00:40,248 INFO L226 Difference]: Without dead ends: 137 [2024-10-23 23:00:40,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-23 23:00:40,249 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:00:40,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 164 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:00:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-10-23 23:00:40,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-10-23 23:00:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3088235294117647) internal successors, (178), 136 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 178 transitions. [2024-10-23 23:00:40,256 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 178 transitions. Word has length 135 [2024-10-23 23:00:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:00:40,256 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 178 transitions. [2024-10-23 23:00:40,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:00:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 178 transitions. [2024-10-23 23:00:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-10-23 23:00:40,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:00:40,257 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 2, 2, 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] [2024-10-23 23:00:40,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-23 23:00:40,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:40,457 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:00:40,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:00:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash -31100625, now seen corresponding path program 1 times [2024-10-23 23:00:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:00:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632421719] [2024-10-23 23:00:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:00:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-10-23 23:00:41,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:00:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632421719] [2024-10-23 23:00:41,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632421719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:00:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987404999] [2024-10-23 23:00:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:00:41,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:00:41,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:00:41,625 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:00:41,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-23 23:00:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:00:42,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 6470 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-23 23:00:42,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:00:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 23:00:43,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:00:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-23 23:00:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987404999] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:00:43,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:00:43,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 24, 13] total 42 [2024-10-23 23:00:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360994110] [2024-10-23 23:00:43,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:00:43,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-23 23:00:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:00:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-23 23:00:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2024-10-23 23:00:43,736 INFO L87 Difference]: Start difference. First operand 137 states and 178 transitions. Second operand has 42 states, 42 states have (on average 4.619047619047619) internal successors, (194), 42 states have internal predecessors, (194), 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)