./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/cartpole_63_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_63_safe.c-amalgamation.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7146a160359a9fc0b2b10b7a5e386ffca3afba2a39fc7176539855c260395eb9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 00:56:50,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 00:56:50,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 00:56:50,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 00:56:50,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 00:56:50,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 00:56:50,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 00:56:50,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 00:56:50,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 00:56:50,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 00:56:50,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 00:56:50,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 00:56:50,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 00:56:50,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 00:56:50,476 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 00:56:50,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 00:56:50,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 00:56:50,477 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 00:56:50,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 00:56:50,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 00:56:50,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 00:56:50,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 00:56:50,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 00:56:50,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 00:56:50,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 00:56:50,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 00:56:50,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 00:56:50,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 00:56:50,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 00:56:50,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 00:56:50,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 00:56:50,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 00:56:50,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:56:50,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 00:56:50,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 00:56:50,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 00:56:50,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 00:56:50,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 00:56:50,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 00:56:50,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 00:56:50,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 00:56:50,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 00:56:50,483 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7146a160359a9fc0b2b10b7a5e386ffca3afba2a39fc7176539855c260395eb9 [2024-10-11 00:56:50,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 00:56:50,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 00:56:50,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 00:56:50,713 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 00:56:50,713 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 00:56:50,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_63_safe.c-amalgamation.i [2024-10-11 00:56:52,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 00:56:52,355 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 00:56:52,356 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_63_safe.c-amalgamation.i [2024-10-11 00:56:52,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9478003eb/1045c1bcc60a495b92cf6836b0b9f893/FLAGfa85e8253 [2024-10-11 00:56:52,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9478003eb/1045c1bcc60a495b92cf6836b0b9f893 [2024-10-11 00:56:52,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 00:56:52,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 00:56:52,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 00:56:52,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 00:56:52,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 00:56:52,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:56:52" (1/1) ... [2024-10-11 00:56:52,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c233f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:52, skipping insertion in model container [2024-10-11 00:56:52,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:56:52" (1/1) ... [2024-10-11 00:56:52,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 00:56:52,996 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/cartpole_63_safe.c-amalgamation.i[63704,63717] [2024-10-11 00:56:53,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:56:53,232 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 00:56:53,276 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/cartpole_63_safe.c-amalgamation.i[63704,63717] [2024-10-11 00:56:53,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:56:53,602 INFO L204 MainTranslator]: Completed translation [2024-10-11 00:56:53,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53 WrapperNode [2024-10-11 00:56:53,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 00:56:53,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 00:56:53,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 00:56:53,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 00:56:53,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:53,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:53,844 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-11 00:56:53,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 00:56:53,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 00:56:53,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 00:56:53,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 00:56:53,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:53,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:53,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:53,950 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 3, 7, 13, 257, 65, 4097, 65, 129, 3, 10, 70]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 0, 7, 0, 256, 64, 4096, 64, 128, 2, 4, 64]. The 10 writes are split as follows [0, 1, 0, 4, 0, 0, 0, 0, 0, 0, 3, 2]. [2024-10-11 00:56:53,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:53,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:54,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:54,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:54,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:54,234 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:54,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 00:56:54,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 00:56:54,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 00:56:54,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 00:56:54,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (1/1) ... [2024-10-11 00:56:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:56:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:56:54,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 00:56:54,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 00:56:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-11 00:56:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-11 00:56:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-11 00:56:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 00:56:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 00:56:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 00:56:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 00:56:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 00:56:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 00:56:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 00:56:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 00:56:54,605 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 00:56:54,607 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 00:56:59,232 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-11 00:56:59,232 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 00:56:59,516 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 00:56:59,516 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-11 00:56:59,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:56:59 BoogieIcfgContainer [2024-10-11 00:56:59,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 00:56:59,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 00:56:59,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 00:56:59,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 00:56:59,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:56:52" (1/3) ... [2024-10-11 00:56:59,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729f99b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:56:59, skipping insertion in model container [2024-10-11 00:56:59,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:56:53" (2/3) ... [2024-10-11 00:56:59,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729f99b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:56:59, skipping insertion in model container [2024-10-11 00:56:59,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:56:59" (3/3) ... [2024-10-11 00:56:59,524 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_63_safe.c-amalgamation.i [2024-10-11 00:56:59,536 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 00:56:59,537 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 00:56:59,585 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 00:56:59,592 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;@6462edc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 00:56:59,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 00:56:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:56:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:56:59,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:56:59,602 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] [2024-10-11 00:56:59,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:56:59,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:56:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-11 00:56:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:56:59,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904057828] [2024-10-11 00:56:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:56:59,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:57:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904057828] [2024-10-11 00:57:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904057828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:57:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:57:00,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 00:57:00,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25621055] [2024-10-11 00:57:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:00,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 00:57:00,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 00:57:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 00:57:00,300 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:00,496 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-11 00:57:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 00:57:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2024-10-11 00:57:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:00,503 INFO L225 Difference]: With dead ends: 89 [2024-10-11 00:57:00,503 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 00:57:00,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 00:57:00,507 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:00,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 00:57:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-11 00:57:00,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-11 00:57:00,530 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-11 00:57:00,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:00,531 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-11 00:57:00,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:00,531 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-11 00:57:00,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:57:00,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:00,532 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] [2024-10-11 00:57:00,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 00:57:00,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:00,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-11 00:57:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368675076] [2024-10-11 00:57:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:57:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:01,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368675076] [2024-10-11 00:57:01,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368675076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:57:01,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:57:01,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 00:57:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297772146] [2024-10-11 00:57:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:01,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:01,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:57:01,041 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:01,267 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-11 00:57:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-10-11 00:57:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:01,269 INFO L225 Difference]: With dead ends: 80 [2024-10-11 00:57:01,269 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 00:57:01,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:57:01,270 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:01,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:01,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 00:57:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-11 00:57:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-11 00:57:01,279 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-11 00:57:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:01,280 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-11 00:57:01,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-11 00:57:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:57:01,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:01,282 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] [2024-10-11 00:57:01,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 00:57:01,282 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:01,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-11 00:57:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545742678] [2024-10-11 00:57:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:57:02,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545742678] [2024-10-11 00:57:02,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545742678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:57:02,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:57:02,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 00:57:02,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888561115] [2024-10-11 00:57:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:02,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:02,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:02,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:57:02,051 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:02,290 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-11 00:57:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:02,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-10-11 00:57:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:02,291 INFO L225 Difference]: With dead ends: 75 [2024-10-11 00:57:02,292 INFO L226 Difference]: Without dead ends: 45 [2024-10-11 00:57:02,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:57:02,293 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:02,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-11 00:57:02,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-11 00:57:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-11 00:57:02,301 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-11 00:57:02,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:02,302 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-11 00:57:02,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:02,303 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-11 00:57:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 00:57:02,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:02,303 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] [2024-10-11 00:57:02,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 00:57:02,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:02,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-11 00:57:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226990193] [2024-10-11 00:57:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:57:02,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:02,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226990193] [2024-10-11 00:57:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226990193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205670618] [2024-10-11 00:57:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:02,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:02,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:02,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:02,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 00:57:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:03,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 00:57:03,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 00:57:04,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:57:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205670618] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:57:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405343239] [2024-10-11 00:57:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:04,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:57:04,032 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:04,220 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-11 00:57:04,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:04,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2024-10-11 00:57:04,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:04,221 INFO L225 Difference]: With dead ends: 66 [2024-10-11 00:57:04,221 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 00:57:04,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:57:04,222 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:04,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 00:57:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-11 00:57:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-11 00:57:04,226 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-11 00:57:04,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:04,226 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-11 00:57:04,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-11 00:57:04,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 00:57:04,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:04,227 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] [2024-10-11 00:57:04,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:04,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:04,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:04,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:04,428 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-11 00:57:04,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:04,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375598262] [2024-10-11 00:57:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:04,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:57:05,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375598262] [2024-10-11 00:57:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375598262] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260694378] [2024-10-11 00:57:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:05,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:05,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:05,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:05,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 00:57:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:06,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 00:57:06,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 00:57:06,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 00:57:06,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260694378] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:06,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:06,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:57:06,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389563123] [2024-10-11 00:57:06,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:06,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:06,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:06,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:57:06,139 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:06,338 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-11 00:57:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2024-10-11 00:57:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:06,339 INFO L225 Difference]: With dead ends: 57 [2024-10-11 00:57:06,339 INFO L226 Difference]: Without dead ends: 47 [2024-10-11 00:57:06,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:57:06,340 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:06,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-11 00:57:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-11 00:57:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-11 00:57:06,344 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-11 00:57:06,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:06,345 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-11 00:57:06,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-11 00:57:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 00:57:06,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:06,346 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] [2024-10-11 00:57:06,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 00:57:06,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:06,547 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:06,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-11 00:57:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688783999] [2024-10-11 00:57:06,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 00:57:07,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:07,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688783999] [2024-10-11 00:57:07,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688783999] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439539040] [2024-10-11 00:57:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:07,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:07,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:07,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:07,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 00:57:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:08,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 00:57:08,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 00:57:08,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 00:57:08,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439539040] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:08,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:08,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:57:08,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385246684] [2024-10-11 00:57:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:08,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:08,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:08,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:57:08,282 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:08,475 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-11 00:57:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2024-10-11 00:57:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:08,476 INFO L225 Difference]: With dead ends: 74 [2024-10-11 00:57:08,476 INFO L226 Difference]: Without dead ends: 48 [2024-10-11 00:57:08,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:57:08,477 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:08,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-11 00:57:08,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-11 00:57:08,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-11 00:57:08,482 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-11 00:57:08,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:08,482 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-11 00:57:08,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:08,482 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-11 00:57:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 00:57:08,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:08,483 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] [2024-10-11 00:57:08,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 00:57:08,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:08,688 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:08,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-11 00:57:08,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146865334] [2024-10-11 00:57:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 00:57:09,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:09,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146865334] [2024-10-11 00:57:09,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146865334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:09,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338057154] [2024-10-11 00:57:09,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:09,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:09,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:09,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 00:57:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:10,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:57:10,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 00:57:10,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:57:10,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338057154] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:10,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:10,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 00:57:10,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114703994] [2024-10-11 00:57:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:10,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:57:10,257 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:10,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:10,435 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-11 00:57:10,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:10,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-10-11 00:57:10,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:10,436 INFO L225 Difference]: With dead ends: 64 [2024-10-11 00:57:10,436 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 00:57:10,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:57:10,437 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:10,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 00:57:10,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 00:57:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-11 00:57:10,441 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-11 00:57:10,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:10,441 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-11 00:57:10,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-11 00:57:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 00:57:10,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:10,442 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:10,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 00:57:10,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 00:57:10,646 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:10,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:10,647 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-11 00:57:10,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:10,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660611349] [2024-10-11 00:57:10,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:10,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:57:11,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:11,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660611349] [2024-10-11 00:57:11,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660611349] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:11,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190768345] [2024-10-11 00:57:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:11,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:11,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:11,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:11,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 00:57:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:12,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:57:12,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:57:12,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:12,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 00:57:12,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190768345] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:12,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:12,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 00:57:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203238390] [2024-10-11 00:57:12,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:12,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:57:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:12,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:57:12,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:57:12,350 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:12,518 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-11 00:57:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:57:12,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-11 00:57:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:12,519 INFO L225 Difference]: With dead ends: 54 [2024-10-11 00:57:12,519 INFO L226 Difference]: Without dead ends: 50 [2024-10-11 00:57:12,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:57:12,520 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:12,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-11 00:57:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-11 00:57:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-11 00:57:12,523 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-11 00:57:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:12,523 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-11 00:57:12,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-11 00:57:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 00:57:12,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:12,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:12,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 00:57:12,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:12,725 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:12,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-11 00:57:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:12,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614251829] [2024-10-11 00:57:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 00:57:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614251829] [2024-10-11 00:57:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614251829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132271930] [2024-10-11 00:57:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:13,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:13,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:13,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 00:57:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:14,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 00:57:14,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 00:57:14,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 00:57:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132271930] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:14,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:14,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-11 00:57:14,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367257277] [2024-10-11 00:57:14,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:14,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 00:57:14,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:14,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 00:57:14,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:57:14,359 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:14,654 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-11 00:57:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 00:57:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-11 00:57:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:14,655 INFO L225 Difference]: With dead ends: 95 [2024-10-11 00:57:14,655 INFO L226 Difference]: Without dead ends: 60 [2024-10-11 00:57:14,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:57:14,656 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:14,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:57:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-11 00:57:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-11 00:57:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-11 00:57:14,660 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-11 00:57:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:14,660 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-11 00:57:14,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-11 00:57:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 00:57:14,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:14,661 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:14,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 00:57:14,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 00:57:14,863 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:14,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-11 00:57:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:14,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176365628] [2024-10-11 00:57:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 00:57:15,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:15,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176365628] [2024-10-11 00:57:15,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176365628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:15,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568591021] [2024-10-11 00:57:15,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:57:15,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:15,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:15,519 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:15,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 00:57:16,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:57:16,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:57:16,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 00:57:16,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 00:57:16,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 00:57:16,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568591021] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:16,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:16,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-11 00:57:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047832032] [2024-10-11 00:57:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:57:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:57:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:57:16,638 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:16,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:16,845 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-11 00:57:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:57:16,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-11 00:57:16,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:16,846 INFO L225 Difference]: With dead ends: 70 [2024-10-11 00:57:16,846 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 00:57:16,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:57:16,847 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:16,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 00:57:16,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 00:57:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-11 00:57:16,852 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-11 00:57:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:16,852 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-11 00:57:16,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:16,852 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-11 00:57:16,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 00:57:16,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:16,854 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:16,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:17,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:17,058 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:17,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:17,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-11 00:57:17,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:17,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309887150] [2024-10-11 00:57:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-11 00:57:17,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309887150] [2024-10-11 00:57:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309887150] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:17,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845778867] [2024-10-11 00:57:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:17,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:17,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:17,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 00:57:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:18,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:57:18,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-11 00:57:18,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-11 00:57:18,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845778867] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:18,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:18,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-11 00:57:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149496454] [2024-10-11 00:57:18,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:18,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 00:57:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 00:57:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:57:18,864 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:19,150 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-11 00:57:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 00:57:19,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-11 00:57:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:19,153 INFO L225 Difference]: With dead ends: 116 [2024-10-11 00:57:19,153 INFO L226 Difference]: Without dead ends: 71 [2024-10-11 00:57:19,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 00:57:19,153 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:19,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 192 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:57:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-11 00:57:19,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-11 00:57:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 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) [2024-10-11 00:57:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-11 00:57:19,162 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-11 00:57:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:19,162 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-11 00:57:19,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-11 00:57:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 00:57:19,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:19,163 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:19,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 00:57:19,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 00:57:19,364 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:19,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-11 00:57:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:19,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141716684] [2024-10-11 00:57:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 00:57:20,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141716684] [2024-10-11 00:57:20,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141716684] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:20,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899099881] [2024-10-11 00:57:20,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:57:20,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:20,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:20,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:20,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 00:57:21,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:57:21,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:57:21,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 00:57:21,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-11 00:57:21,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 00:57:21,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899099881] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:21,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:21,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2024-10-11 00:57:21,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493744605] [2024-10-11 00:57:21,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:21,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 00:57:21,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 00:57:21,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-11 00:57:21,251 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 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) [2024-10-11 00:57:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:21,639 INFO L93 Difference]: Finished difference Result 135 states and 182 transitions. [2024-10-11 00:57:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 00:57:21,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 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) Word has length 66 [2024-10-11 00:57:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:21,641 INFO L225 Difference]: With dead ends: 135 [2024-10-11 00:57:21,641 INFO L226 Difference]: Without dead ends: 81 [2024-10-11 00:57:21,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-11 00:57:21,641 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 44 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:21,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 253 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 00:57:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-11 00:57:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-11 00:57:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2024-10-11 00:57:21,659 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 66 [2024-10-11 00:57:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:21,659 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2024-10-11 00:57:21,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 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) [2024-10-11 00:57:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2024-10-11 00:57:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 00:57:21,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:21,660 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:21,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:21,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:21,861 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:21,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1529729791, now seen corresponding path program 3 times [2024-10-11 00:57:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690537769] [2024-10-11 00:57:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 00:57:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690537769] [2024-10-11 00:57:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690537769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982434166] [2024-10-11 00:57:22,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 00:57:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:22,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:22,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:22,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 00:57:23,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 00:57:23,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:57:23,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 00:57:23,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-11 00:57:23,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 00:57:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982434166] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:23,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:23,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2024-10-11 00:57:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003306089] [2024-10-11 00:57:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:23,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:57:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:57:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-11 00:57:23,911 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:24,123 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-10-11 00:57:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:57:24,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-11 00:57:24,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:24,126 INFO L225 Difference]: With dead ends: 124 [2024-10-11 00:57:24,126 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 00:57:24,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-11 00:57:24,126 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:24,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 00:57:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-10-11 00:57:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 81 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2024-10-11 00:57:24,143 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 70 [2024-10-11 00:57:24,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:24,147 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2024-10-11 00:57:24,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2024-10-11 00:57:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 00:57:24,148 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:24,148 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:24,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:24,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 00:57:24,349 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:24,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1554558736, now seen corresponding path program 1 times [2024-10-11 00:57:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597556414] [2024-10-11 00:57:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-11 00:57:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597556414] [2024-10-11 00:57:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597556414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893052228] [2024-10-11 00:57:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:25,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:25,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:25,137 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:25,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 00:57:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:26,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:57:26,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 00:57:26,153 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 00:57:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893052228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:57:26,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 00:57:26,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-11 00:57:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814699785] [2024-10-11 00:57:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:26,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:57:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:57:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:57:26,155 INFO L87 Difference]: Start difference. First operand 82 states and 108 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:26,345 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2024-10-11 00:57:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:57:26,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-11 00:57:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:26,346 INFO L225 Difference]: With dead ends: 147 [2024-10-11 00:57:26,346 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 00:57:26,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:57:26,349 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:26,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 00:57:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-11 00:57:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-11 00:57:26,358 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 73 [2024-10-11 00:57:26,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:26,358 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-11 00:57:26,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:26,358 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-11 00:57:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 00:57:26,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:26,359 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:26,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 00:57:26,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 00:57:26,560 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:26,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1120259536, now seen corresponding path program 1 times [2024-10-11 00:57:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317811141] [2024-10-11 00:57:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 00:57:27,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317811141] [2024-10-11 00:57:27,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317811141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849175189] [2024-10-11 00:57:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:27,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:27,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:27,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:27,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 00:57:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:28,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 5490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:57:28,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-11 00:57:28,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 00:57:28,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849175189] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:28,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-11 00:57:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677979246] [2024-10-11 00:57:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:28,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:57:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:57:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:57:28,456 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:28,650 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-10-11 00:57:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:57:28,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-11 00:57:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:28,650 INFO L225 Difference]: With dead ends: 124 [2024-10-11 00:57:28,651 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 00:57:28,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:57:28,651 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:28,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 00:57:28,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-11 00:57:28,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3253012048192772) internal successors, (110), 83 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-10-11 00:57:28,656 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 76 [2024-10-11 00:57:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:28,656 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-10-11 00:57:28,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-10-11 00:57:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 00:57:28,657 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:28,657 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:28,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 00:57:28,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 00:57:28,857 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:28,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash -604552515, now seen corresponding path program 1 times [2024-10-11 00:57:28,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:28,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149524936] [2024-10-11 00:57:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:28,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-11 00:57:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149524936] [2024-10-11 00:57:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149524936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951213429] [2024-10-11 00:57:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:29,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:29,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:29,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:29,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 00:57:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:30,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:57:30,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-11 00:57:30,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 00:57:30,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951213429] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:30,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:30,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-11 00:57:30,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735757431] [2024-10-11 00:57:30,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:30,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:57:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:57:30,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:57:30,748 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:30,933 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-11 00:57:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:57:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-11 00:57:30,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:30,934 INFO L225 Difference]: With dead ends: 107 [2024-10-11 00:57:30,934 INFO L226 Difference]: Without dead ends: 88 [2024-10-11 00:57:30,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:57:30,935 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:30,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-11 00:57:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-11 00:57:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-10-11 00:57:30,942 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2024-10-11 00:57:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:30,942 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-10-11 00:57:30,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-10-11 00:57:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 00:57:30,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:30,943 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:30,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 00:57:31,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:31,144 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:31,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash -550947933, now seen corresponding path program 1 times [2024-10-11 00:57:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:31,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121801408] [2024-10-11 00:57:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-11 00:57:31,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:31,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121801408] [2024-10-11 00:57:31,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121801408] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477111015] [2024-10-11 00:57:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:31,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:31,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:31,951 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:31,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 00:57:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:32,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 00:57:32,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 00:57:32,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-11 00:57:33,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477111015] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:33,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:57:33,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-11 00:57:33,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509876945] [2024-10-11 00:57:33,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:57:33,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:57:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:33,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:57:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-11 00:57:33,032 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2024-10-11 00:57:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:33,210 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-10-11 00:57:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:57:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 79 [2024-10-11 00:57:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:33,211 INFO L225 Difference]: With dead ends: 157 [2024-10-11 00:57:33,211 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 00:57:33,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-11 00:57:33,212 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:33,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:57:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 00:57:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-11 00:57:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 88 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:33,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-11 00:57:33,217 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 79 [2024-10-11 00:57:33,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:33,217 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-11 00:57:33,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2024-10-11 00:57:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-11 00:57:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 00:57:33,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:33,218 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:33,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:33,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 00:57:33,418 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:33,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:33,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1880924804, now seen corresponding path program 1 times [2024-10-11 00:57:33,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:33,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234374739] [2024-10-11 00:57:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-11 00:57:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234374739] [2024-10-11 00:57:34,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234374739] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161230909] [2024-10-11 00:57:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:34,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:34,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:34,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:34,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 00:57:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:35,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 5502 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 00:57:35,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-11 00:57:35,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-11 00:57:35,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161230909] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:35,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:35,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-11 00:57:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425414093] [2024-10-11 00:57:35,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:35,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 00:57:35,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:35,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 00:57:35,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-11 00:57:35,339 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:35,930 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions. [2024-10-11 00:57:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 00:57:35,931 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-11 00:57:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:35,931 INFO L225 Difference]: With dead ends: 177 [2024-10-11 00:57:35,931 INFO L226 Difference]: Without dead ends: 108 [2024-10-11 00:57:35,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-11 00:57:35,932 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 45 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:35,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 469 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 00:57:35,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-11 00:57:35,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-11 00:57:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2024-10-11 00:57:35,937 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 80 [2024-10-11 00:57:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:35,937 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2024-10-11 00:57:35,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:35,937 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2024-10-11 00:57:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 00:57:35,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:35,938 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:35,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:36,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 00:57:36,139 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:36,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 213343619, now seen corresponding path program 2 times [2024-10-11 00:57:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:36,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767722874] [2024-10-11 00:57:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-11 00:57:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767722874] [2024-10-11 00:57:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767722874] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000350752] [2024-10-11 00:57:37,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:57:37,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:37,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:37,217 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:37,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 00:57:38,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:57:38,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:57:38,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 5613 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 00:57:38,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-11 00:57:38,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-10-11 00:57:38,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000350752] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:38,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:38,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-11 00:57:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742489848] [2024-10-11 00:57:38,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:38,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 00:57:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 00:57:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-11 00:57:38,576 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:39,405 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-10-11 00:57:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 00:57:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-11 00:57:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:39,406 INFO L225 Difference]: With dead ends: 206 [2024-10-11 00:57:39,406 INFO L226 Difference]: Without dead ends: 115 [2024-10-11 00:57:39,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-10-11 00:57:39,407 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 34 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:39,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 749 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 00:57:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-11 00:57:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-11 00:57:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 112 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2024-10-11 00:57:39,413 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 99 [2024-10-11 00:57:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:39,413 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2024-10-11 00:57:39,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2024-10-11 00:57:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 00:57:39,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:39,415 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:39,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 00:57:39,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:39,619 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:39,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash -774915223, now seen corresponding path program 3 times [2024-10-11 00:57:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:39,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701097348] [2024-10-11 00:57:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-11 00:57:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701097348] [2024-10-11 00:57:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701097348] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703054884] [2024-10-11 00:57:40,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 00:57:40,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:40,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:40,803 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:40,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 00:57:42,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 00:57:42,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:57:42,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 00:57:42,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-11 00:57:42,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-10-11 00:57:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703054884] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:42,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:42,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 6] total 23 [2024-10-11 00:57:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739745312] [2024-10-11 00:57:42,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:42,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 00:57:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 00:57:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-10-11 00:57:42,280 INFO L87 Difference]: Start difference. First operand 113 states and 145 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:42,961 INFO L93 Difference]: Finished difference Result 232 states and 302 transitions. [2024-10-11 00:57:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 00:57:42,962 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-10-11 00:57:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:42,963 INFO L225 Difference]: With dead ends: 232 [2024-10-11 00:57:42,963 INFO L226 Difference]: Without dead ends: 139 [2024-10-11 00:57:42,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2024-10-11 00:57:42,964 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:42,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 506 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 00:57:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-11 00:57:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2024-10-11 00:57:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 136 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:42,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2024-10-11 00:57:42,971 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 104 [2024-10-11 00:57:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:42,971 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2024-10-11 00:57:42,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2024-10-11 00:57:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-11 00:57:42,972 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:42,972 INFO L215 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:42,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-11 00:57:43,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:43,173 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:43,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1041239427, now seen corresponding path program 4 times [2024-10-11 00:57:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200356766] [2024-10-11 00:57:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-11 00:57:44,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:44,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200356766] [2024-10-11 00:57:44,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200356766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:44,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080341527] [2024-10-11 00:57:44,391 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 00:57:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:44,392 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:44,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 00:57:45,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 00:57:45,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:57:45,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 5733 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 00:57:45,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:57:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-11 00:57:45,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:57:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-10-11 00:57:45,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080341527] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:57:45,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:57:45,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-11 00:57:45,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392376281] [2024-10-11 00:57:45,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:57:45,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 00:57:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:57:45,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 00:57:45,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-11 00:57:45,694 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:57:46,656 INFO L93 Difference]: Finished difference Result 208 states and 273 transitions. [2024-10-11 00:57:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 00:57:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-10-11 00:57:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:57:46,657 INFO L225 Difference]: With dead ends: 208 [2024-10-11 00:57:46,657 INFO L226 Difference]: Without dead ends: 160 [2024-10-11 00:57:46,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-10-11 00:57:46,658 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 63 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 00:57:46,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 758 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 00:57:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-11 00:57:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-10-11 00:57:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.2802547770700636) internal successors, (201), 157 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2024-10-11 00:57:46,717 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 128 [2024-10-11 00:57:46,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:57:46,717 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2024-10-11 00:57:46,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 00:57:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2024-10-11 00:57:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-11 00:57:46,718 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:57:46,719 INFO L215 NwaCegarLoop]: trace histogram [16, 13, 13, 13, 10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 00:57:46,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-11 00:57:46,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 00:57:46,923 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:57:46,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:57:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1197000503, now seen corresponding path program 5 times [2024-10-11 00:57:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:57:46,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638694504] [2024-10-11 00:57:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:57:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:57:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:57:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-10-11 00:57:48,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:57:48,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638694504] [2024-10-11 00:57:48,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638694504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:57:48,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387526554] [2024-10-11 00:57:48,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 00:57:48,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:57:48,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:57:48,452 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 00:57:48,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process