./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/robot_6_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_6_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05be414ce99d271d18a9eaf7ed1d79af139d48e7fabb9b8c3a463c49fd6ed047 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:37:28,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:37:28,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:37:28,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:37:28,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:37:29,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:37:29,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:37:29,011 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:37:29,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:37:29,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:37:29,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:37:29,012 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:37:29,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:37:29,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:37:29,025 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:37:29,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:37:29,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:37:29,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:37:29,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:37:29,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:37:29,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:37:29,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:37:29,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:37:29,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:37:29,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:37:29,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:37:29,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:37:29,032 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:37:29,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:37:29,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:37:29,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:37:29,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:37:29,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:37:29,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:37:29,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:37:29,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:37:29,035 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05be414ce99d271d18a9eaf7ed1d79af139d48e7fabb9b8c3a463c49fd6ed047 [2024-10-14 01:37:29,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:37:29,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:37:29,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:37:29,236 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:37:29,236 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:37:29,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_6_safe.c-amalgamation.i [2024-10-14 01:37:30,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:37:30,956 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:37:30,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/robot_6_safe.c-amalgamation.i [2024-10-14 01:37:30,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc566729/77b219717ec04f34b88678037e3693fa/FLAG114bddac2 [2024-10-14 01:37:31,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc566729/77b219717ec04f34b88678037e3693fa [2024-10-14 01:37:31,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:37:31,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:37:31,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:37:31,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:37:31,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:37:31,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:37:31" (1/1) ... [2024-10-14 01:37:31,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c093d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:31, skipping insertion in model container [2024-10-14 01:37:31,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:37:31" (1/1) ... [2024-10-14 01:37:31,185 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:37:32,076 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/robot_6_safe.c-amalgamation.i[63907,63920] [2024-10-14 01:37:32,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:37:32,415 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:37:32,456 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/robot_6_safe.c-amalgamation.i[63907,63920] [2024-10-14 01:37:32,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:37:32,905 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:37:32,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32 WrapperNode [2024-10-14 01:37:32,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:37:32,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:37:32,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:37:32,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:37:32,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,432 INFO L138 Inliner]: procedures = 621, calls = 9239, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 9600 [2024-10-14 01:37:33,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:37:33,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:37:33,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:37:33,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:37:33,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,499 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,585 INFO L175 MemorySlicer]: Split 9211 memory accesses to 14 slices as follows [2, 7, 321, 65, 4097, 65, 4097, 65, 321, 6, 73, 70, 16, 6]. 44 percent of accesses are in the largest equivalence class. The 9166 initializations are split as follows [2, 7, 320, 64, 4096, 64, 4096, 64, 320, 5, 64, 64, 0, 0]. The 12 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 3, 5, 1]. [2024-10-14 01:37:33,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:33,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:34,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:34,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:37:34,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:37:34,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:37:34,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:37:34,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (1/1) ... [2024-10-14 01:37:34,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:37:34,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:37:34,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:37:34,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:37:34,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 01:37:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 01:37:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2024-10-14 01:37:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 01:37:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:37:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:37:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-14 01:37:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-14 01:37:34,354 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:37:34,355 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:37:49,158 INFO L? ?]: Removed 170 outVars from TransFormulas that were not future-live. [2024-10-14 01:37:49,158 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:37:49,501 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:37:49,501 INFO L314 CfgBuilder]: Removed 15 assume(true) statements. [2024-10-14 01:37:49,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:37:49 BoogieIcfgContainer [2024-10-14 01:37:49,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:37:49,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:37:49,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:37:49,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:37:49,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:37:31" (1/3) ... [2024-10-14 01:37:49,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe3d370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:37:49, skipping insertion in model container [2024-10-14 01:37:49,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:37:32" (2/3) ... [2024-10-14 01:37:49,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe3d370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:37:49, skipping insertion in model container [2024-10-14 01:37:49,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:37:49" (3/3) ... [2024-10-14 01:37:49,510 INFO L112 eAbstractionObserver]: Analyzing ICFG robot_6_safe.c-amalgamation.i [2024-10-14 01:37:49,524 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:37:49,524 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 01:37:49,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:37:49,589 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;@28fd327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:37:49,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 01:37:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 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) [2024-10-14 01:37:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 01:37:49,600 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:37:49,601 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:37:49,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:37:49,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:37:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1999498850, now seen corresponding path program 1 times [2024-10-14 01:37:49,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:37:49,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823665322] [2024-10-14 01:37:49,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:37:49,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:37:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:37:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:37:50,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:37:50,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823665322] [2024-10-14 01:37:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823665322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:37:50,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:37:50,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:37:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411098761] [2024-10-14 01:37:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:37:50,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:37:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:37:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:37:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:37:50,959 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:37:51,311 INFO L93 Difference]: Finished difference Result 125 states and 217 transitions. [2024-10-14 01:37:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:37:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-14 01:37:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:37:51,319 INFO L225 Difference]: With dead ends: 125 [2024-10-14 01:37:51,319 INFO L226 Difference]: Without dead ends: 62 [2024-10-14 01:37:51,326 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 [2024-10-14 01:37:51,332 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:37:51,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:37:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-14 01:37:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-14 01:37:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2024-10-14 01:37:51,359 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 39 [2024-10-14 01:37:51,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:37:51,359 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2024-10-14 01:37:51,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2024-10-14 01:37:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 01:37:51,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:37:51,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:37:51,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:37:51,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:37:51,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:37:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1543540249, now seen corresponding path program 1 times [2024-10-14 01:37:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:37:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831354976] [2024-10-14 01:37:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:37:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:37:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:37:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:37:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:37:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831354976] [2024-10-14 01:37:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831354976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:37:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:37:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:37:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791014135] [2024-10-14 01:37:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:37:52,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:37:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:37:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:37:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:37:52,396 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:37:53,020 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2024-10-14 01:37:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:37:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-14 01:37:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:37:53,021 INFO L225 Difference]: With dead ends: 116 [2024-10-14 01:37:53,021 INFO L226 Difference]: Without dead ends: 62 [2024-10-14 01:37:53,022 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 [2024-10-14 01:37:53,022 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:37:53,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 01:37:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-14 01:37:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-14 01:37:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4262295081967213) internal successors, (87), 61 states have internal predecessors, (87), 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) [2024-10-14 01:37:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 87 transitions. [2024-10-14 01:37:53,033 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 87 transitions. Word has length 39 [2024-10-14 01:37:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:37:53,034 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 87 transitions. [2024-10-14 01:37:53,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:53,034 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 87 transitions. [2024-10-14 01:37:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 01:37:53,035 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:37:53,035 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:37:53,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:37:53,037 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:37:53,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:37:53,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1268780635, now seen corresponding path program 1 times [2024-10-14 01:37:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:37:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953658710] [2024-10-14 01:37:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:37:53,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:37:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:37:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:37:54,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:37:54,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953658710] [2024-10-14 01:37:54,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953658710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:37:54,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:37:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:37:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236819008] [2024-10-14 01:37:54,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:37:54,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:37:54,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:37:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:37:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:37:54,597 INFO L87 Difference]: Start difference. First operand 62 states and 87 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:37:55,014 INFO L93 Difference]: Finished difference Result 102 states and 145 transitions. [2024-10-14 01:37:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:37:55,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-14 01:37:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:37:55,016 INFO L225 Difference]: With dead ends: 102 [2024-10-14 01:37:55,016 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 01:37:55,016 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 [2024-10-14 01:37:55,017 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:37:55,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:37:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 01:37:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-10-14 01:37:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-10-14 01:37:55,029 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 39 [2024-10-14 01:37:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:37:55,029 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-10-14 01:37:55,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:37:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-10-14 01:37:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-14 01:37:55,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:37:55,030 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] [2024-10-14 01:37:55,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:37:55,031 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:37:55,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:37:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1666113522, now seen corresponding path program 1 times [2024-10-14 01:37:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:37:55,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759960629] [2024-10-14 01:37:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:37:55,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:37:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:37:56,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:37:56,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:37:56,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759960629] [2024-10-14 01:37:56,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759960629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:37:56,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790843082] [2024-10-14 01:37:56,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:37:56,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:37:56,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:37:56,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:37:56,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:37:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:37:58,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 9774 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 01:37:58,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:37:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:37:58,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:37:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:37:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790843082] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:37:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:37:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:37:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252516161] [2024-10-14 01:37:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:37:58,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:37:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:37:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:37:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:37:58,680 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-14 01:37:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:37:59,073 INFO L93 Difference]: Finished difference Result 91 states and 128 transitions. [2024-10-14 01:37:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:37:59,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2024-10-14 01:37:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:37:59,075 INFO L225 Difference]: With dead ends: 91 [2024-10-14 01:37:59,075 INFO L226 Difference]: Without dead ends: 64 [2024-10-14 01:37:59,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:37:59,076 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:37:59,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:37:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-14 01:37:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-14 01:37:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 63 states have internal predecessors, (89), 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) [2024-10-14 01:37:59,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 89 transitions. [2024-10-14 01:37:59,083 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 89 transitions. Word has length 42 [2024-10-14 01:37:59,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:37:59,084 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 89 transitions. [2024-10-14 01:37:59,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-10-14 01:37:59,084 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 89 transitions. [2024-10-14 01:37:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-14 01:37:59,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:37:59,085 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] [2024-10-14 01:37:59,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 01:37:59,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:37:59,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:37:59,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:37:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1881213728, now seen corresponding path program 1 times [2024-10-14 01:37:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:37:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948796694] [2024-10-14 01:37:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:37:59,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:37:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:38:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948796694] [2024-10-14 01:38:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948796694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41362737] [2024-10-14 01:38:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:00,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:00,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:00,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:00,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:38:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:02,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 9792 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 01:38:02,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:38:02,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:38:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41362737] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:02,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:38:02,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:38:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835273255] [2024-10-14 01:38:02,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:38:02,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:38:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:02,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:38:02,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:38:02,263 INFO L87 Difference]: Start difference. First operand 64 states and 89 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-14 01:38:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:02,591 INFO L93 Difference]: Finished difference Result 82 states and 114 transitions. [2024-10-14 01:38:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:38:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2024-10-14 01:38:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:02,593 INFO L225 Difference]: With dead ends: 82 [2024-10-14 01:38:02,593 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 01:38:02,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:38:02,594 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:02,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:38:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 01:38:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-14 01:38:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 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) [2024-10-14 01:38:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2024-10-14 01:38:02,598 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 45 [2024-10-14 01:38:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:02,599 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2024-10-14 01:38:02,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-10-14 01:38:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2024-10-14 01:38:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-14 01:38:02,599 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:02,600 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] [2024-10-14 01:38:02,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 01:38:02,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:02,804 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:02,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash -655161778, now seen corresponding path program 1 times [2024-10-14 01:38:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:02,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698483006] [2024-10-14 01:38:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:38:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698483006] [2024-10-14 01:38:04,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698483006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:04,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276137766] [2024-10-14 01:38:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:04,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:04,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:04,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:38:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:05,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 9810 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:38:05,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:38:05,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:38:05,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276137766] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:38:05,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:38:05,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-14 01:38:05,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852973410] [2024-10-14 01:38:05,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:38:05,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:38:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:38:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:38:05,690 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-14 01:38:06,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:06,024 INFO L93 Difference]: Finished difference Result 114 states and 160 transitions. [2024-10-14 01:38:06,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:38:06,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-10-14 01:38:06,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:06,025 INFO L225 Difference]: With dead ends: 114 [2024-10-14 01:38:06,025 INFO L226 Difference]: Without dead ends: 70 [2024-10-14 01:38:06,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 01:38:06,026 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:06,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:38:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-14 01:38:06,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-10-14 01:38:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 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) [2024-10-14 01:38:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2024-10-14 01:38:06,030 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 48 [2024-10-14 01:38:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:06,030 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2024-10-14 01:38:06,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-10-14 01:38:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2024-10-14 01:38:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-14 01:38:06,031 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:06,031 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] [2024-10-14 01:38:06,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 01:38:06,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:06,235 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:06,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 787380296, now seen corresponding path program 1 times [2024-10-14 01:38:06,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:06,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561415446] [2024-10-14 01:38:06,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:06,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:38:07,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:07,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561415446] [2024-10-14 01:38:07,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561415446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:07,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007600019] [2024-10-14 01:38:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:07,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:07,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:07,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:07,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:38:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:09,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 9816 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:38:09,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:38:09,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:38:09,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007600019] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:09,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:38:09,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:38:09,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336314914] [2024-10-14 01:38:09,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:38:09,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:38:09,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:09,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:38:09,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:38:09,363 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-14 01:38:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:09,772 INFO L93 Difference]: Finished difference Result 100 states and 139 transitions. [2024-10-14 01:38:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:38:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2024-10-14 01:38:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:09,773 INFO L225 Difference]: With dead ends: 100 [2024-10-14 01:38:09,773 INFO L226 Difference]: Without dead ends: 67 [2024-10-14 01:38:09,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:38:09,774 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:09,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:38:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-14 01:38:09,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-14 01:38:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 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) [2024-10-14 01:38:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2024-10-14 01:38:09,779 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 51 [2024-10-14 01:38:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:09,779 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2024-10-14 01:38:09,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-10-14 01:38:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2024-10-14 01:38:09,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-14 01:38:09,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:09,780 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] [2024-10-14 01:38:09,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 01:38:09,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:09,981 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:09,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:09,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1651793648, now seen corresponding path program 1 times [2024-10-14 01:38:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:09,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566026642] [2024-10-14 01:38:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:09,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:38:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566026642] [2024-10-14 01:38:11,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566026642] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566140021] [2024-10-14 01:38:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:11,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:11,035 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:11,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 01:38:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:12,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 9822 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:38:12,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:38:12,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:38:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566140021] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:12,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:38:12,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:38:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941077500] [2024-10-14 01:38:12,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:38:12,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:38:12,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:38:12,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:38:12,812 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:38:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:13,131 INFO L93 Difference]: Finished difference Result 90 states and 124 transitions. [2024-10-14 01:38:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:38:13,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-10-14 01:38:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:13,132 INFO L225 Difference]: With dead ends: 90 [2024-10-14 01:38:13,133 INFO L226 Difference]: Without dead ends: 68 [2024-10-14 01:38:13,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:38:13,133 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:13,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:38:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-10-14 01:38:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-10-14 01:38:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 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) [2024-10-14 01:38:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2024-10-14 01:38:13,138 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 54 [2024-10-14 01:38:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:13,138 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2024-10-14 01:38:13,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:38:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2024-10-14 01:38:13,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-14 01:38:13,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:13,139 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] [2024-10-14 01:38:13,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 01:38:13,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:13,340 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:13,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:13,341 INFO L85 PathProgramCache]: Analyzing trace with hash 152863130, now seen corresponding path program 1 times [2024-10-14 01:38:13,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:13,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503398854] [2024-10-14 01:38:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:13,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:38:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503398854] [2024-10-14 01:38:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503398854] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783035685] [2024-10-14 01:38:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:14,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:14,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:14,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 01:38:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:16,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 9828 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 01:38:16,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:38:16,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:38:16,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783035685] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:16,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:38:16,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:38:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874556122] [2024-10-14 01:38:16,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:38:16,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:38:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:16,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:38:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:38:16,108 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 01:38:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:16,457 INFO L93 Difference]: Finished difference Result 80 states and 109 transitions. [2024-10-14 01:38:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:38:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-10-14 01:38:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:16,458 INFO L225 Difference]: With dead ends: 80 [2024-10-14 01:38:16,458 INFO L226 Difference]: Without dead ends: 69 [2024-10-14 01:38:16,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:38:16,459 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:16,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:38:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-14 01:38:16,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-14 01:38:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 68 states have internal predecessors, (94), 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) [2024-10-14 01:38:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2024-10-14 01:38:16,463 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 94 transitions. Word has length 57 [2024-10-14 01:38:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:16,463 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 94 transitions. [2024-10-14 01:38:16,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-10-14 01:38:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 94 transitions. [2024-10-14 01:38:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 01:38:16,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:16,464 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] [2024-10-14 01:38:16,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 01:38:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:16,668 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1209571778, now seen corresponding path program 1 times [2024-10-14 01:38:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219855698] [2024-10-14 01:38:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:38:17,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219855698] [2024-10-14 01:38:17,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219855698] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:17,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683568317] [2024-10-14 01:38:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:17,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:17,620 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:17,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 01:38:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:19,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 9834 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:38:19,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:38:19,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:38:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683568317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:38:19,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:38:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-10-14 01:38:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613322098] [2024-10-14 01:38:19,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:38:19,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 01:38:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 01:38:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-14 01:38:19,399 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2024-10-14 01:38:20,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:20,006 INFO L93 Difference]: Finished difference Result 130 states and 182 transitions. [2024-10-14 01:38:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 01:38:20,007 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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 60 [2024-10-14 01:38:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:20,007 INFO L225 Difference]: With dead ends: 130 [2024-10-14 01:38:20,007 INFO L226 Difference]: Without dead ends: 78 [2024-10-14 01:38:20,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:38:20,008 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 19 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:20,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 356 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 01:38:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-14 01:38:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-14 01:38:20,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3636363636363635) internal successors, (105), 77 states have internal predecessors, (105), 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) [2024-10-14 01:38:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 105 transitions. [2024-10-14 01:38:20,017 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 105 transitions. Word has length 60 [2024-10-14 01:38:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:20,017 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 105 transitions. [2024-10-14 01:38:20,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2024-10-14 01:38:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 105 transitions. [2024-10-14 01:38:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 01:38:20,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:20,018 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] [2024-10-14 01:38:20,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 01:38:20,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:20,219 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:20,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 829702057, now seen corresponding path program 2 times [2024-10-14 01:38:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690946721] [2024-10-14 01:38:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:38:21,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690946721] [2024-10-14 01:38:21,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690946721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841573191] [2024-10-14 01:38:21,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:38:21,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:21,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:21,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:21,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 01:38:23,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:38:23,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:38:23,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 9888 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:38:23,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-14 01:38:23,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 01:38:23,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841573191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:38:23,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:38:23,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-14 01:38:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935431353] [2024-10-14 01:38:23,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:38:23,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 01:38:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 01:38:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:38:23,842 INFO L87 Difference]: Start difference. First operand 78 states and 105 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2024-10-14 01:38:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:24,390 INFO L93 Difference]: Finished difference Result 134 states and 186 transitions. [2024-10-14 01:38:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 01:38:24,391 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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 69 [2024-10-14 01:38:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:24,391 INFO L225 Difference]: With dead ends: 134 [2024-10-14 01:38:24,391 INFO L226 Difference]: Without dead ends: 92 [2024-10-14 01:38:24,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:38:24,392 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 27 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:24,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 261 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 01:38:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-14 01:38:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-10-14 01:38:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3595505617977528) internal successors, (121), 89 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:38:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2024-10-14 01:38:24,399 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 69 [2024-10-14 01:38:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:24,399 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2024-10-14 01:38:24,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2024-10-14 01:38:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2024-10-14 01:38:24,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-14 01:38:24,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:24,400 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] [2024-10-14 01:38:24,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 01:38:24,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 01:38:24,605 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:24,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1700687192, now seen corresponding path program 3 times [2024-10-14 01:38:24,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:24,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269666270] [2024-10-14 01:38:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:24,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 01:38:26,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:26,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269666270] [2024-10-14 01:38:26,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269666270] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:26,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516356992] [2024-10-14 01:38:26,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:38:26,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:26,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:26,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:26,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 01:38:28,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:38:28,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:38:28,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 9834 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:38:28,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-14 01:38:28,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-14 01:38:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516356992] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:38:28,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:38:28,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 13 [2024-10-14 01:38:28,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53621340] [2024-10-14 01:38:28,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:38:28,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 01:38:28,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 01:38:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:38:28,488 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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) [2024-10-14 01:38:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:29,039 INFO L93 Difference]: Finished difference Result 155 states and 214 transitions. [2024-10-14 01:38:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 01:38:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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 81 [2024-10-14 01:38:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:29,041 INFO L225 Difference]: With dead ends: 155 [2024-10-14 01:38:29,041 INFO L226 Difference]: Without dead ends: 104 [2024-10-14 01:38:29,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-14 01:38:29,042 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 30 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:29,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 327 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 01:38:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-14 01:38:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2024-10-14 01:38:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.3564356435643565) internal successors, (137), 101 states have internal predecessors, (137), 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) [2024-10-14 01:38:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 137 transitions. [2024-10-14 01:38:29,050 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 137 transitions. Word has length 81 [2024-10-14 01:38:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:29,050 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 137 transitions. [2024-10-14 01:38:29,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.153846153846153) internal successors, (106), 13 states have internal predecessors, (106), 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) [2024-10-14 01:38:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 137 transitions. [2024-10-14 01:38:29,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-14 01:38:29,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:29,053 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2024-10-14 01:38:29,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 01:38:29,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:29,254 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:29,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 205873381, now seen corresponding path program 4 times [2024-10-14 01:38:29,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:29,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750655156] [2024-10-14 01:38:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:29,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 01:38:30,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750655156] [2024-10-14 01:38:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750655156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:30,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098823094] [2024-10-14 01:38:30,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 01:38:30,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:30,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:30,856 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:30,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 01:38:32,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 01:38:32,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:38:32,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 10032 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 01:38:32,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:38:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:38:32,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:38:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-10-14 01:38:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098823094] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:38:32,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:38:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 7] total 19 [2024-10-14 01:38:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369523115] [2024-10-14 01:38:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:38:32,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 01:38:32,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:38:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 01:38:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-14 01:38:32,764 INFO L87 Difference]: Start difference. First operand 102 states and 137 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 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) [2024-10-14 01:38:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:38:33,964 INFO L93 Difference]: Finished difference Result 185 states and 257 transitions. [2024-10-14 01:38:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 01:38:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 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) Word has length 93 [2024-10-14 01:38:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:38:33,965 INFO L225 Difference]: With dead ends: 185 [2024-10-14 01:38:33,965 INFO L226 Difference]: Without dead ends: 125 [2024-10-14 01:38:33,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:38:33,966 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 55 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-14 01:38:33,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 874 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-14 01:38:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-14 01:38:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-10-14 01:38:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 122 states have internal predecessors, (165), 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) [2024-10-14 01:38:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 165 transitions. [2024-10-14 01:38:33,970 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 165 transitions. Word has length 93 [2024-10-14 01:38:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:38:33,970 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 165 transitions. [2024-10-14 01:38:33,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 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) [2024-10-14 01:38:33,971 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 165 transitions. [2024-10-14 01:38:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-14 01:38:33,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:38:33,972 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 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] [2024-10-14 01:38:34,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 01:38:34,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 01:38:34,173 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:38:34,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:38:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash 273946618, now seen corresponding path program 5 times [2024-10-14 01:38:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:38:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893604420] [2024-10-14 01:38:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:38:34,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:38:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:38:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-14 01:38:35,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:38:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893604420] [2024-10-14 01:38:35,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893604420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:38:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198208458] [2024-10-14 01:38:35,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 01:38:35,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:38:35,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:38:35,966 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:38:35,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process