./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/gcas_5_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_5_safe.c-amalgamation.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 c74876b3f0f1df43503b2a84772fdaee8bccd0d64d21a9aae779c5a0ec40b51d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 01:13:44,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 01:13:45,019 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 01:13:45,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 01:13:45,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 01:13:45,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 01:13:45,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 01:13:45,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 01:13:45,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 01:13:45,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 01:13:45,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 01:13:45,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 01:13:45,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 01:13:45,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 01:13:45,057 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 01:13:45,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 01:13:45,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 01:13:45,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 01:13:45,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 01:13:45,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 01:13:45,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 01:13:45,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 01:13:45,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 01:13:45,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 01:13:45,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 01:13:45,064 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 01:13:45,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 01:13:45,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 01:13:45,065 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 01:13:45,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 01:13:45,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 01:13:45,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 01:13:45,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:13:45,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 01:13:45,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 01:13:45,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 01:13:45,067 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 01:13:45,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 01:13:45,068 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 01:13:45,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 01:13:45,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 01:13:45,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 01:13:45,072 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c74876b3f0f1df43503b2a84772fdaee8bccd0d64d21a9aae779c5a0ec40b51d [2024-10-11 01:13:45,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 01:13:45,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 01:13:45,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 01:13:45,353 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 01:13:45,353 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 01:13:45,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_5_safe.c-amalgamation.i [2024-10-11 01:13:46,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 01:13:47,237 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 01:13:47,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_5_safe.c-amalgamation.i [2024-10-11 01:13:47,271 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6965e8376/592252681268409790cace9e78a2a33c/FLAG6d05d7247 [2024-10-11 01:13:47,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/6965e8376/592252681268409790cace9e78a2a33c [2024-10-11 01:13:47,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 01:13:47,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 01:13:47,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 01:13:47,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 01:13:47,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 01:13:47,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:13:47" (1/1) ... [2024-10-11 01:13:47,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395389a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:47, skipping insertion in model container [2024-10-11 01:13:47,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 01:13:47" (1/1) ... [2024-10-11 01:13:47,381 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 01:13:48,056 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/gcas_5_safe.c-amalgamation.i[65248,65261] [2024-10-11 01:13:48,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:13:48,287 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 01:13:48,338 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/gcas_5_safe.c-amalgamation.i[65248,65261] [2024-10-11 01:13:48,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 01:13:48,657 INFO L204 MainTranslator]: Completed translation [2024-10-11 01:13:48,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48 WrapperNode [2024-10-11 01:13:48,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 01:13:48,659 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 01:13:48,659 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 01:13:48,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 01:13:48,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:48,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:48,859 INFO L138 Inliner]: procedures = 619, calls = 2157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 2547 [2024-10-11 01:13:48,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 01:13:48,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 01:13:48,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 01:13:48,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 01:13:48,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:48,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:48,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:48,945 INFO L175 MemorySlicer]: Split 2133 memory accesses to 12 slices as follows [3, 2, 43, 7, 449, 33, 1025, 33, 449, 15, 38, 36]. 48 percent of accesses are in the largest equivalence class. The 2071 initializations are split as follows [0, 2, 0, 7, 448, 32, 1024, 32, 448, 14, 32, 32]. The 19 writes are split as follows [1, 0, 14, 0, 0, 0, 0, 0, 0, 0, 2, 2]. [2024-10-11 01:13:48,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:48,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:49,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:49,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:49,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:49,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:49,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 01:13:49,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 01:13:49,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 01:13:49,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 01:13:49,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (1/1) ... [2024-10-11 01:13:49,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 01:13:49,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:13:49,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 01:13:49,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 01:13:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-11 01:13:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-11 01:13:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-11 01:13:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-11 01:13:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-11 01:13:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-11 01:13:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-11 01:13:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-11 01:13:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-11 01:13:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-11 01:13:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-11 01:13:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-11 01:13:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-11 01:13:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-11 01:13:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-11 01:13:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-11 01:13:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-11 01:13:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-11 01:13:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-11 01:13:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 01:13:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 01:13:49,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 01:13:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 01:13:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 01:13:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 01:13:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 01:13:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 01:13:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 01:13:49,458 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 01:13:49,460 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 01:13:51,901 INFO L? ?]: Removed 144 outVars from TransFormulas that were not future-live. [2024-10-11 01:13:51,901 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 01:13:52,072 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 01:13:52,073 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-11 01:13:52,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:13:52 BoogieIcfgContainer [2024-10-11 01:13:52,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 01:13:52,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 01:13:52,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 01:13:52,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 01:13:52,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 01:13:47" (1/3) ... [2024-10-11 01:13:52,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac56b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:13:52, skipping insertion in model container [2024-10-11 01:13:52,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 01:13:48" (2/3) ... [2024-10-11 01:13:52,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac56b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 01:13:52, skipping insertion in model container [2024-10-11 01:13:52,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 01:13:52" (3/3) ... [2024-10-11 01:13:52,084 INFO L112 eAbstractionObserver]: Analyzing ICFG gcas_5_safe.c-amalgamation.i [2024-10-11 01:13:52,102 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 01:13:52,103 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 01:13:52,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 01:13:52,207 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;@3c89a231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 01:13:52,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 01:13:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 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) [2024-10-11 01:13:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 01:13:52,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:52,222 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, 1] [2024-10-11 01:13:52,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:52,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash -781333683, now seen corresponding path program 1 times [2024-10-11 01:13:52,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:52,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641948562] [2024-10-11 01:13:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:53,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:53,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641948562] [2024-10-11 01:13:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641948562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:13:53,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:13:53,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 01:13:53,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051280117] [2024-10-11 01:13:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:13:53,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 01:13:53,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:13:53,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 01:13:53,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 01:13:53,069 INFO L87 Difference]: Start difference. First operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 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 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2024-10-11 01:13:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:13:53,310 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2024-10-11 01:13:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 01:13:53,313 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2024-10-11 01:13:53,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:13:53,322 INFO L225 Difference]: With dead ends: 147 [2024-10-11 01:13:53,322 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 01:13:53,326 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 [2024-10-11 01:13:53,330 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:13:53,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:13:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 01:13:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 01:13:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 72 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) [2024-10-11 01:13:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-10-11 01:13:53,370 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 56 [2024-10-11 01:13:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:13:53,370 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-10-11 01:13:53,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2024-10-11 01:13:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-10-11 01:13:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 01:13:53,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:53,372 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, 1] [2024-10-11 01:13:53,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 01:13:53,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:53,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2129147117, now seen corresponding path program 1 times [2024-10-11 01:13:53,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:53,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915156020] [2024-10-11 01:13:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:53,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915156020] [2024-10-11 01:13:53,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915156020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:13:53,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:13:53,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:13:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191341880] [2024-10-11 01:13:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:13:53,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:13:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:13:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:13:53,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:13:53,850 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:13:54,158 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2024-10-11 01:13:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:13:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-11 01:13:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:13:54,160 INFO L225 Difference]: With dead ends: 138 [2024-10-11 01:13:54,160 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 01:13:54,160 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 [2024-10-11 01:13:54,164 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:13:54,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:13:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 01:13:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 01:13:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 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) [2024-10-11 01:13:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2024-10-11 01:13:54,180 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 56 [2024-10-11 01:13:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:13:54,180 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2024-10-11 01:13:54,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:54,181 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2024-10-11 01:13:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 01:13:54,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:54,182 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, 1] [2024-10-11 01:13:54,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 01:13:54,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:54,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2113628399, now seen corresponding path program 1 times [2024-10-11 01:13:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:54,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366621826] [2024-10-11 01:13:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:54,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:54,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366621826] [2024-10-11 01:13:54,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366621826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:13:54,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:13:54,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:13:54,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478080817] [2024-10-11 01:13:54,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:13:54,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:13:54,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:13:54,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:13:54,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:13:54,700 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:13:55,019 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2024-10-11 01:13:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:13:55,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-11 01:13:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:13:55,021 INFO L225 Difference]: With dead ends: 105 [2024-10-11 01:13:55,021 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 01:13:55,021 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 [2024-10-11 01:13:55,022 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:13:55,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:13:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 01:13:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 01:13:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 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) [2024-10-11 01:13:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2024-10-11 01:13:55,028 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 56 [2024-10-11 01:13:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:13:55,028 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2024-10-11 01:13:55,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2024-10-11 01:13:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 01:13:55,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:55,030 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, 1] [2024-10-11 01:13:55,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 01:13:55,030 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:55,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1092560045, now seen corresponding path program 1 times [2024-10-11 01:13:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:55,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320366003] [2024-10-11 01:13:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:55,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320366003] [2024-10-11 01:13:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320366003] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:13:55,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:13:55,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:13:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125221396] [2024-10-11 01:13:55,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:13:55,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:13:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:13:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:13:55,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:13:55,482 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:13:55,799 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2024-10-11 01:13:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:13:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-11 01:13:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:13:55,801 INFO L225 Difference]: With dead ends: 76 [2024-10-11 01:13:55,801 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 01:13:55,801 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 [2024-10-11 01:13:55,802 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:13:55,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:13:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 01:13:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 01:13:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 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) [2024-10-11 01:13:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2024-10-11 01:13:55,813 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 56 [2024-10-11 01:13:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:13:55,814 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2024-10-11 01:13:55,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2024-10-11 01:13:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 01:13:55,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:55,816 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, 1] [2024-10-11 01:13:55,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 01:13:55,816 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:55,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1092561967, now seen corresponding path program 1 times [2024-10-11 01:13:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528492542] [2024-10-11 01:13:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:55,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:56,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528492542] [2024-10-11 01:13:56,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528492542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:13:56,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 01:13:56,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 01:13:56,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346866975] [2024-10-11 01:13:56,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:13:56,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:13:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:13:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:13:56,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 01:13:56,369 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:13:56,709 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2024-10-11 01:13:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:13:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-11 01:13:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:13:56,711 INFO L225 Difference]: With dead ends: 97 [2024-10-11 01:13:56,711 INFO L226 Difference]: Without dead ends: 76 [2024-10-11 01:13:56,711 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 [2024-10-11 01:13:56,712 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:13:56,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:13:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-11 01:13:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-10-11 01:13:56,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 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) [2024-10-11 01:13:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2024-10-11 01:13:56,719 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 56 [2024-10-11 01:13:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:13:56,723 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2024-10-11 01:13:56,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-11 01:13:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2024-10-11 01:13:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 01:13:56,724 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:56,724 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, 1, 1, 1, 1] [2024-10-11 01:13:56,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 01:13:56,724 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:56,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 986750680, now seen corresponding path program 1 times [2024-10-11 01:13:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290865006] [2024-10-11 01:13:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:57,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:57,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290865006] [2024-10-11 01:13:57,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290865006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:13:57,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484159632] [2024-10-11 01:13:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:57,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:13:57,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:13:57,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:13:57,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 01:13:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:58,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 01:13:58,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:13:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 01:13:58,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:13:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:13:58,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484159632] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:13:58,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:13:58,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 01:13:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464561996] [2024-10-11 01:13:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:13:58,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:13:58,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:13:58,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:13:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:13:58,334 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-10-11 01:13:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:13:58,643 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-10-11 01:13:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:13:58,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2024-10-11 01:13:58,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:13:58,645 INFO L225 Difference]: With dead ends: 86 [2024-10-11 01:13:58,647 INFO L226 Difference]: Without dead ends: 75 [2024-10-11 01:13:58,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 01:13:58,648 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:13:58,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:13:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-11 01:13:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-11 01:13:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 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) [2024-10-11 01:13:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2024-10-11 01:13:58,659 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 59 [2024-10-11 01:13:58,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:13:58,660 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2024-10-11 01:13:58,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2024-10-11 01:13:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2024-10-11 01:13:58,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 01:13:58,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:13:58,661 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:13:58,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 01:13:58,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:13:58,866 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:13:58,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:13:58,867 INFO L85 PathProgramCache]: Analyzing trace with hash -985336725, now seen corresponding path program 1 times [2024-10-11 01:13:58,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:13:58,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109846008] [2024-10-11 01:13:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:58,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:13:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:13:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 01:13:59,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:13:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109846008] [2024-10-11 01:13:59,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109846008] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:13:59,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357359512] [2024-10-11 01:13:59,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:13:59,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:13:59,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:13:59,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:13:59,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 01:14:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:00,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 01:14:00,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:14:00,345 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:14:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357359512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:14:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:14:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-11 01:14:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957695519] [2024-10-11 01:14:00,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:00,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:14:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:14:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:14:00,348 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-11 01:14:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:00,594 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-11 01:14:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:14:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2024-10-11 01:14:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:00,596 INFO L225 Difference]: With dead ends: 107 [2024-10-11 01:14:00,596 INFO L226 Difference]: Without dead ends: 80 [2024-10-11 01:14:00,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 01:14:00,597 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:00,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:14:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-11 01:14:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-10-11 01:14:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 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) [2024-10-11 01:14:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2024-10-11 01:14:00,604 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 62 [2024-10-11 01:14:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:00,604 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2024-10-11 01:14:00,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-10-11 01:14:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2024-10-11 01:14:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-11 01:14:00,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:00,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:00,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 01:14:00,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:00,807 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:00,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1664813890, now seen corresponding path program 1 times [2024-10-11 01:14:00,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:00,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865720766] [2024-10-11 01:14:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:14:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865720766] [2024-10-11 01:14:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865720766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306942645] [2024-10-11 01:14:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:01,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:01,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:01,361 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:01,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 01:14:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:02,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:14:02,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 01:14:02,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:14:02,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306942645] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:02,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:14:02,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 01:14:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281578236] [2024-10-11 01:14:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:02,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:14:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:14:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:14:02,193 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-11 01:14:02,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:02,405 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2024-10-11 01:14:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:14:02,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 [2024-10-11 01:14:02,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:02,407 INFO L225 Difference]: With dead ends: 93 [2024-10-11 01:14:02,407 INFO L226 Difference]: Without dead ends: 77 [2024-10-11 01:14:02,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:14:02,408 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:02,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:14:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-11 01:14:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-11 01:14:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 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) [2024-10-11 01:14:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2024-10-11 01:14:02,418 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 65 [2024-10-11 01:14:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:02,419 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2024-10-11 01:14:02,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-11 01:14:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2024-10-11 01:14:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 01:14:02,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:02,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:02,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 01:14:02,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:02,621 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:02,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:02,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1900472348, now seen corresponding path program 1 times [2024-10-11 01:14:02,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680223652] [2024-10-11 01:14:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:02,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:14:03,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680223652] [2024-10-11 01:14:03,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680223652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074049422] [2024-10-11 01:14:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:03,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:03,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:03,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:03,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 01:14:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:03,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:14:03,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 01:14:03,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:14:03,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074049422] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:03,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:14:03,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 01:14:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322876775] [2024-10-11 01:14:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:03,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 01:14:03,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:03,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 01:14:03,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:14:03,859 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-11 01:14:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:04,072 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-10-11 01:14:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 01:14:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 [2024-10-11 01:14:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:04,073 INFO L225 Difference]: With dead ends: 83 [2024-10-11 01:14:04,073 INFO L226 Difference]: Without dead ends: 78 [2024-10-11 01:14:04,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:14:04,074 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:04,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:14:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-11 01:14:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-11 01:14:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 01:14:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2024-10-11 01:14:04,084 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 68 [2024-10-11 01:14:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:04,084 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2024-10-11 01:14:04,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-11 01:14:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2024-10-11 01:14:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 01:14:04,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:04,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:04,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 01:14:04,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 01:14:04,287 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:04,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1506015068, now seen corresponding path program 1 times [2024-10-11 01:14:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702644621] [2024-10-11 01:14:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:14:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702644621] [2024-10-11 01:14:04,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702644621] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686365707] [2024-10-11 01:14:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:04,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:04,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:04,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 01:14:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:05,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 01:14:05,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:14:05,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:14:05,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686365707] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:14:05,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:14:05,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 01:14:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763463863] [2024-10-11 01:14:05,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:14:05,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 01:14:05,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 01:14:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-11 01:14:05,546 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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) [2024-10-11 01:14:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:05,913 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2024-10-11 01:14:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 01:14:05,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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) Word has length 71 [2024-10-11 01:14:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:05,914 INFO L225 Difference]: With dead ends: 111 [2024-10-11 01:14:05,914 INFO L226 Difference]: Without dead ends: 87 [2024-10-11 01:14:05,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-11 01:14:05,915 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 19 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:05,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 235 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:14:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-11 01:14:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-10-11 01:14:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 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) [2024-10-11 01:14:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2024-10-11 01:14:05,921 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 71 [2024-10-11 01:14:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:05,921 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2024-10-11 01:14:05,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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) [2024-10-11 01:14:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2024-10-11 01:14:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 01:14:05,923 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:05,923 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:05,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 01:14:06,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 01:14:06,124 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:06,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:06,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1738722315, now seen corresponding path program 2 times [2024-10-11 01:14:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:06,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380925541] [2024-10-11 01:14:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 01:14:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380925541] [2024-10-11 01:14:06,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380925541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072270095] [2024-10-11 01:14:06,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:14:06,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:06,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:06,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 01:14:07,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:14:07,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:14:07,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:14:07,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 01:14:07,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-11 01:14:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072270095] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:14:07,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:14:07,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-11 01:14:07,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992397934] [2024-10-11 01:14:07,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:14:07,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 01:14:07,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 01:14:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-11 01:14:07,696 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2024-10-11 01:14:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:08,484 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2024-10-11 01:14:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 01:14:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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 80 [2024-10-11 01:14:08,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:08,485 INFO L225 Difference]: With dead ends: 125 [2024-10-11 01:14:08,485 INFO L226 Difference]: Without dead ends: 101 [2024-10-11 01:14:08,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-11 01:14:08,486 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 20 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:08,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 629 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 01:14:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-11 01:14:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-10-11 01:14:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 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) [2024-10-11 01:14:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-10-11 01:14:08,492 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 80 [2024-10-11 01:14:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:08,492 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-10-11 01:14:08,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 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) [2024-10-11 01:14:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-10-11 01:14:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-11 01:14:08,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:08,494 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:08,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 01:14:08,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 01:14:08,695 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:08,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1779525407, now seen corresponding path program 3 times [2024-10-11 01:14:08,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:08,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361254034] [2024-10-11 01:14:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:08,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-11 01:14:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:09,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361254034] [2024-10-11 01:14:09,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361254034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:09,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614689781] [2024-10-11 01:14:09,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:14:09,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:09,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:09,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:09,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 01:14:10,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:14:10,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:14:10,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 01:14:10,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-11 01:14:10,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:14:10,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614689781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:14:10,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:14:10,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-11 01:14:10,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425260429] [2024-10-11 01:14:10,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:10,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:14:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:14:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:14:10,195 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-11 01:14:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:10,445 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2024-10-11 01:14:10,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:14:10,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 [2024-10-11 01:14:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:10,446 INFO L225 Difference]: With dead ends: 133 [2024-10-11 01:14:10,447 INFO L226 Difference]: Without dead ends: 102 [2024-10-11 01:14:10,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:14:10,447 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:10,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 230 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:14:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-11 01:14:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-10-11 01:14:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 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) [2024-10-11 01:14:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2024-10-11 01:14:10,453 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 92 [2024-10-11 01:14:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:10,454 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2024-10-11 01:14:10,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-10-11 01:14:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2024-10-11 01:14:10,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-11 01:14:10,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:10,458 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:10,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 01:14:10,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:10,659 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:10,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1876763282, now seen corresponding path program 1 times [2024-10-11 01:14:10,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825005401] [2024-10-11 01:14:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:10,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 01:14:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825005401] [2024-10-11 01:14:11,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825005401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:11,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112602061] [2024-10-11 01:14:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:11,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:11,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:11,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:11,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 01:14:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:12,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:14:12,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-11 01:14:12,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:14:12,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112602061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:14:12,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:14:12,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-11 01:14:12,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973787944] [2024-10-11 01:14:12,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:12,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:14:12,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:14:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:14:12,265 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2024-10-11 01:14:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:12,650 INFO L93 Difference]: Finished difference Result 159 states and 211 transitions. [2024-10-11 01:14:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:14:12,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 95 [2024-10-11 01:14:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:12,652 INFO L225 Difference]: With dead ends: 159 [2024-10-11 01:14:12,652 INFO L226 Difference]: Without dead ends: 103 [2024-10-11 01:14:12,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-11 01:14:12,653 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:12,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 228 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:14:12,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-11 01:14:12,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-11 01:14:12,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.32) internal successors, (132), 100 states have internal predecessors, (132), 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) [2024-10-11 01:14:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2024-10-11 01:14:12,658 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 95 [2024-10-11 01:14:12,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:12,658 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2024-10-11 01:14:12,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2024-10-11 01:14:12,659 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2024-10-11 01:14:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-11 01:14:12,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:12,660 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:12,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 01:14:12,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 01:14:12,861 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:12,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1271339392, now seen corresponding path program 1 times [2024-10-11 01:14:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254321815] [2024-10-11 01:14:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 01:14:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254321815] [2024-10-11 01:14:13,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254321815] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:13,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492825438] [2024-10-11 01:14:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:13,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:13,597 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:13,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 01:14:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:14,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:14:14,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 01:14:14,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-11 01:14:14,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492825438] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:14,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:14:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-11 01:14:14,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888198587] [2024-10-11 01:14:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:14,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:14:14,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:14:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:14:14,415 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-10-11 01:14:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:14,723 INFO L93 Difference]: Finished difference Result 134 states and 176 transitions. [2024-10-11 01:14:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:14:14,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) Word has length 98 [2024-10-11 01:14:14,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:14,724 INFO L225 Difference]: With dead ends: 134 [2024-10-11 01:14:14,724 INFO L226 Difference]: Without dead ends: 102 [2024-10-11 01:14:14,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-11 01:14:14,725 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:14,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:14:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-11 01:14:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-10-11 01:14:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.316831683168317) internal successors, (133), 101 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) [2024-10-11 01:14:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 133 transitions. [2024-10-11 01:14:14,732 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 133 transitions. Word has length 98 [2024-10-11 01:14:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:14,732 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 133 transitions. [2024-10-11 01:14:14,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-10-11 01:14:14,732 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 133 transitions. [2024-10-11 01:14:14,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 01:14:14,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:14,733 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:14,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 01:14:14,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:14,934 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:14,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:14,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1169731075, now seen corresponding path program 1 times [2024-10-11 01:14:14,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:14,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181905335] [2024-10-11 01:14:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:14,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 01:14:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181905335] [2024-10-11 01:14:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181905335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233251164] [2024-10-11 01:14:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:15,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:15,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 01:14:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:16,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 01:14:16,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 01:14:16,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 01:14:16,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233251164] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:14:16,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:14:16,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-11 01:14:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689241589] [2024-10-11 01:14:16,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:14:16,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 01:14:16,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 01:14:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-11 01:14:16,574 INFO L87 Difference]: Start difference. First operand 102 states and 133 transitions. Second operand has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 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) [2024-10-11 01:14:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:17,891 INFO L93 Difference]: Finished difference Result 160 states and 216 transitions. [2024-10-11 01:14:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 01:14:17,892 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 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 99 [2024-10-11 01:14:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:17,892 INFO L225 Difference]: With dead ends: 160 [2024-10-11 01:14:17,893 INFO L226 Difference]: Without dead ends: 125 [2024-10-11 01:14:17,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:14:17,894 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 58 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:17,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 987 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-11 01:14:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-11 01:14:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-10-11 01:14:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 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) [2024-10-11 01:14:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-11 01:14:17,902 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 99 [2024-10-11 01:14:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:17,903 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-11 01:14:17,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 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) [2024-10-11 01:14:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-11 01:14:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-11 01:14:17,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:17,904 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:17,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 01:14:18,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 01:14:18,106 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:18,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash 517779502, now seen corresponding path program 2 times [2024-10-11 01:14:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018846232] [2024-10-11 01:14:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-11 01:14:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:18,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018846232] [2024-10-11 01:14:18,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018846232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:18,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57387729] [2024-10-11 01:14:18,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:14:18,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:18,937 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:18,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 01:14:19,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:14:19,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:14:19,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 01:14:19,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-11 01:14:19,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 01:14:20,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57387729] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:14:20,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:14:20,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-11 01:14:20,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188223339] [2024-10-11 01:14:20,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:14:20,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 01:14:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:20,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 01:14:20,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-11 01:14:20,121 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 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) [2024-10-11 01:14:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:21,919 INFO L93 Difference]: Finished difference Result 200 states and 270 transitions. [2024-10-11 01:14:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 01:14:21,919 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 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 120 [2024-10-11 01:14:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:21,920 INFO L225 Difference]: With dead ends: 200 [2024-10-11 01:14:21,920 INFO L226 Difference]: Without dead ends: 147 [2024-10-11 01:14:21,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-11 01:14:21,921 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 81 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:21,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1308 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-11 01:14:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-11 01:14:21,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-10-11 01:14:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.321917808219178) internal successors, (193), 146 states have internal predecessors, (193), 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) [2024-10-11 01:14:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2024-10-11 01:14:21,928 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 120 [2024-10-11 01:14:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:21,929 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2024-10-11 01:14:21,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 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) [2024-10-11 01:14:21,929 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2024-10-11 01:14:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-11 01:14:21,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:21,931 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:21,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 01:14:22,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 01:14:22,132 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:22,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:22,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1934356562, now seen corresponding path program 3 times [2024-10-11 01:14:22,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:22,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615641669] [2024-10-11 01:14:22,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:22,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-11 01:14:23,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:23,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615641669] [2024-10-11 01:14:23,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615641669] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:23,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833544299] [2024-10-11 01:14:23,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:14:23,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:23,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:23,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:23,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 01:14:24,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 01:14:24,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:14:24,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:14:24,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-10-11 01:14:24,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-11 01:14:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833544299] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:24,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:14:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 5] total 22 [2024-10-11 01:14:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039331398] [2024-10-11 01:14:24,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:24,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:14:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:24,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:14:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:14:24,306 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-10-11 01:14:24,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:24,590 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2024-10-11 01:14:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:14:24,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) Word has length 144 [2024-10-11 01:14:24,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:24,592 INFO L225 Difference]: With dead ends: 158 [2024-10-11 01:14:24,592 INFO L226 Difference]: Without dead ends: 148 [2024-10-11 01:14:24,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-11 01:14:24,593 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:24,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 01:14:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-11 01:14:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-10-11 01:14:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.3197278911564625) internal successors, (194), 147 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) [2024-10-11 01:14:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2024-10-11 01:14:24,601 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 144 [2024-10-11 01:14:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:24,602 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2024-10-11 01:14:24,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-10-11 01:14:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2024-10-11 01:14:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-11 01:14:24,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:24,604 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:24,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 01:14:24,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 01:14:24,805 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:24,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash -201194635, now seen corresponding path program 1 times [2024-10-11 01:14:24,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:24,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489586865] [2024-10-11 01:14:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:24,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-11 01:14:26,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:26,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489586865] [2024-10-11 01:14:26,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489586865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:26,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005247100] [2024-10-11 01:14:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:26,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:26,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:26,038 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:26,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 01:14:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:26,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:14:26,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-11 01:14:26,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-11 01:14:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005247100] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:27,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 01:14:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-11 01:14:27,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112191586] [2024-10-11 01:14:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:14:27,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:14:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:14:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:14:27,017 INFO L87 Difference]: Start difference. First operand 148 states and 194 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-10-11 01:14:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:27,253 INFO L93 Difference]: Finished difference Result 160 states and 209 transitions. [2024-10-11 01:14:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:14:27,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) Word has length 147 [2024-10-11 01:14:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:27,255 INFO L225 Difference]: With dead ends: 160 [2024-10-11 01:14:27,255 INFO L226 Difference]: Without dead ends: 149 [2024-10-11 01:14:27,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-11 01:14:27,256 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:27,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 01:14:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-11 01:14:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-10-11 01:14:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 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) [2024-10-11 01:14:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2024-10-11 01:14:27,265 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 147 [2024-10-11 01:14:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:27,265 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2024-10-11 01:14:27,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-10-11 01:14:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2024-10-11 01:14:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-11 01:14:27,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:27,267 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:27,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 01:14:27,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 01:14:27,468 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:27,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1434118105, now seen corresponding path program 1 times [2024-10-11 01:14:27,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:27,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559580186] [2024-10-11 01:14:27,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-11 01:14:28,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:28,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559580186] [2024-10-11 01:14:28,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559580186] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:28,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117722193] [2024-10-11 01:14:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:28,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:28,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:28,673 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:28,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 01:14:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:29,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-11 01:14:29,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 01:14:29,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-10-11 01:14:30,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117722193] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:14:30,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:14:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2024-10-11 01:14:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264914083] [2024-10-11 01:14:30,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:14:30,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-11 01:14:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-11 01:14:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-10-11 01:14:30,184 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 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) [2024-10-11 01:14:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:35,064 INFO L93 Difference]: Finished difference Result 245 states and 334 transitions. [2024-10-11 01:14:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-11 01:14:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 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 148 [2024-10-11 01:14:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:35,066 INFO L225 Difference]: With dead ends: 245 [2024-10-11 01:14:35,066 INFO L226 Difference]: Without dead ends: 190 [2024-10-11 01:14:35,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 01:14:35,068 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 192 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:35,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1863 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-11 01:14:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-11 01:14:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-10-11 01:14:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.320855614973262) internal successors, (247), 187 states have internal predecessors, (247), 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) [2024-10-11 01:14:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-10-11 01:14:35,075 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 148 [2024-10-11 01:14:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:35,076 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-10-11 01:14:35,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 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) [2024-10-11 01:14:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-10-11 01:14:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-11 01:14:35,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:35,078 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:35,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 01:14:35,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:35,278 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:35,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1320323566, now seen corresponding path program 2 times [2024-10-11 01:14:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:35,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500683032] [2024-10-11 01:14:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:35,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-11 01:14:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500683032] [2024-10-11 01:14:36,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500683032] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59177076] [2024-10-11 01:14:36,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 01:14:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:36,531 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:36,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 01:14:37,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 01:14:37,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:14:37,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 3196 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-11 01:14:37,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:14:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-11 01:14:37,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:14:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-11 01:14:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59177076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:14:38,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:14:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2024-10-11 01:14:38,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555288795] [2024-10-11 01:14:38,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:14:38,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-11 01:14:38,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:14:38,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-11 01:14:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-11 01:14:38,704 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 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) [2024-10-11 01:14:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:14:56,803 INFO L93 Difference]: Finished difference Result 330 states and 451 transitions. [2024-10-11 01:14:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 01:14:56,804 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 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 187 [2024-10-11 01:14:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:14:56,805 INFO L225 Difference]: With dead ends: 330 [2024-10-11 01:14:56,805 INFO L226 Difference]: Without dead ends: 239 [2024-10-11 01:14:56,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2024-10-11 01:14:56,808 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 219 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:14:56,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 3005 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-11 01:14:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-11 01:14:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-10-11 01:14:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3235294117647058) internal successors, (315), 238 states have internal predecessors, (315), 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) [2024-10-11 01:14:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 315 transitions. [2024-10-11 01:14:56,819 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 315 transitions. Word has length 187 [2024-10-11 01:14:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:14:56,820 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 315 transitions. [2024-10-11 01:14:56,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 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) [2024-10-11 01:14:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 315 transitions. [2024-10-11 01:14:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-11 01:14:56,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:14:56,822 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:14:56,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 01:14:57,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:57,023 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:14:57,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:14:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1558131463, now seen corresponding path program 3 times [2024-10-11 01:14:57,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:14:57,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206404942] [2024-10-11 01:14:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:14:57,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:14:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:14:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2024-10-11 01:14:58,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:14:58,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206404942] [2024-10-11 01:14:58,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206404942] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:14:58,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143862821] [2024-10-11 01:14:58,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 01:14:58,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:14:58,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:14:58,866 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:14:58,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 01:14:59,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 01:14:59,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 01:15:00,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 01:15:00,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:15:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2024-10-11 01:15:00,076 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 01:15:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143862821] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 01:15:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 01:15:00,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2024-10-11 01:15:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201410499] [2024-10-11 01:15:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 01:15:00,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 01:15:00,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:15:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 01:15:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:15:00,079 INFO L87 Difference]: Start difference. First operand 239 states and 315 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2024-10-11 01:15:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 01:15:00,471 INFO L93 Difference]: Finished difference Result 435 states and 576 transitions. [2024-10-11 01:15:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 01:15:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) Word has length 238 [2024-10-11 01:15:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 01:15:00,473 INFO L225 Difference]: With dead ends: 435 [2024-10-11 01:15:00,473 INFO L226 Difference]: Without dead ends: 240 [2024-10-11 01:15:00,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-10-11 01:15:00,474 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 01:15:00,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 230 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 01:15:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-10-11 01:15:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-10-11 01:15:00,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3221757322175731) internal successors, (316), 239 states have internal predecessors, (316), 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) [2024-10-11 01:15:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 316 transitions. [2024-10-11 01:15:00,484 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 316 transitions. Word has length 238 [2024-10-11 01:15:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 01:15:00,485 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 316 transitions. [2024-10-11 01:15:00,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2024-10-11 01:15:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 316 transitions. [2024-10-11 01:15:00,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-11 01:15:00,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 01:15:00,487 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 01:15:00,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 01:15:00,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 01:15:00,690 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 01:15:00,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 01:15:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1112609847, now seen corresponding path program 1 times [2024-10-11 01:15:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 01:15:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493931045] [2024-10-11 01:15:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:15:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 01:15:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:15:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-11 01:15:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 01:15:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493931045] [2024-10-11 01:15:02,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493931045] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 01:15:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144781115] [2024-10-11 01:15:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 01:15:02,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 01:15:02,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 01:15:02,684 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 01:15:02,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 01:15:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 01:15:03,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-10-11 01:15:03,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 01:15:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 2100 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-11 01:15:04,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 01:15:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-11 01:15:05,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144781115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 01:15:05,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 01:15:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 48, 25] total 72 [2024-10-11 01:15:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431802465] [2024-10-11 01:15:05,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 01:15:05,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-11 01:15:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 01:15:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-11 01:15:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=4500, Unknown=0, NotChecked=0, Total=5112 [2024-10-11 01:15:05,792 INFO L87 Difference]: Start difference. First operand 240 states and 316 transitions. Second operand has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 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)