./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_39_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_39_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 8e571093798fe66a1468fa97ccb66f5f37943a47ba663a525550cde727fcde64 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 00:53:52,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 00:53:52,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 00:53:52,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 00:53:52,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 00:53:52,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 00:53:52,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 00:53:52,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 00:53:52,491 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 00:53:52,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 00:53:52,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 00:53:52,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 00:53:52,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 00:53:52,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 00:53:52,495 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 00:53:52,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 00:53:52,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 00:53:52,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 00:53:52,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 00:53:52,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 00:53:52,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 00:53:52,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 00:53:52,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 00:53:52,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 00:53:52,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 00:53:52,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 00:53:52,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 00:53:52,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 00:53:52,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 00:53:52,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 00:53:52,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 00:53:52,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 00:53:52,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:53:52,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 00:53:52,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 00:53:52,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 00:53:52,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 00:53:52,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 00:53:52,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 00:53:52,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 00:53:52,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 00:53:52,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 00:53:52,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e571093798fe66a1468fa97ccb66f5f37943a47ba663a525550cde727fcde64 [2024-10-11 00:53:52,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 00:53:52,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 00:53:52,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 00:53:52,731 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 00:53:52,731 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 00:53:52,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_39_safe.c-amalgamation.i [2024-10-11 00:53:54,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 00:53:54,451 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 00:53:54,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_39_safe.c-amalgamation.i [2024-10-11 00:53:54,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d5fc63564/06bab14072d84b33b456452e0921f360/FLAGe3d6501c7 [2024-10-11 00:53:54,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d5fc63564/06bab14072d84b33b456452e0921f360 [2024-10-11 00:53:54,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 00:53:54,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 00:53:54,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 00:53:54,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 00:53:54,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 00:53:54,502 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:53:54" (1/1) ... [2024-10-11 00:53:54,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0e12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:54, skipping insertion in model container [2024-10-11 00:53:54,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:53:54" (1/1) ... [2024-10-11 00:53:54,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 00:53:55,089 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_39_safe.c-amalgamation.i[63706,63719] [2024-10-11 00:53:55,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:53:55,340 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 00:53:55,378 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_39_safe.c-amalgamation.i[63706,63719] [2024-10-11 00:53:55,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 00:53:55,879 INFO L204 MainTranslator]: Completed translation [2024-10-11 00:53:55,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55 WrapperNode [2024-10-11 00:53:55,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 00:53:55,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 00:53:55,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 00:53:55,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 00:53:55,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:55,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,196 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-11 00:53:56,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 00:53:56,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 00:53:56,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 00:53:56,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 00:53:56,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,323 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 13, 65, 4097, 65, 129, 3, 3, 10, 70]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 0, 64, 4096, 64, 128, 2, 0, 4, 64]. The 10 writes are split as follows [0, 0, 0, 4, 0, 0, 0, 0, 0, 1, 3, 2]. [2024-10-11 00:53:56,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 00:53:56,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 00:53:56,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 00:53:56,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 00:53:56,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (1/1) ... [2024-10-11 00:53:56,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 00:53:56,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:53:56,559 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 00:53:56,568 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 00:53:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-11 00:53:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-11 00:53:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-11 00:53:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-11 00:53:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-11 00:53:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-11 00:53:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-11 00:53:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-11 00:53:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-11 00:53:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-11 00:53:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-11 00:53:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 00:53:56,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 00:53:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 00:53:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 00:53:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 00:53:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 00:53:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 00:53:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 00:53:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 00:53:56,849 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 00:53:56,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 00:54:01,348 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-11 00:54:01,349 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 00:54:01,554 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 00:54:01,554 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-11 00:54:01,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:54:01 BoogieIcfgContainer [2024-10-11 00:54:01,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 00:54:01,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 00:54:01,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 00:54:01,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 00:54:01,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:53:54" (1/3) ... [2024-10-11 00:54:01,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d490a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:54:01, skipping insertion in model container [2024-10-11 00:54:01,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:53:55" (2/3) ... [2024-10-11 00:54:01,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d490a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:54:01, skipping insertion in model container [2024-10-11 00:54:01,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:54:01" (3/3) ... [2024-10-11 00:54:01,561 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_39_safe.c-amalgamation.i [2024-10-11 00:54:01,572 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 00:54:01,573 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 00:54:01,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 00:54:01,625 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;@48d6172c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 00:54:01,626 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 00:54:01,628 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 00:54:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:54:01,633 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:01,634 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 00:54:01,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:01,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-11 00:54:01,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:01,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357686059] [2024-10-11 00:54:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:01,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:02,347 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 00:54:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357686059] [2024-10-11 00:54:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357686059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:54:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:54:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 00:54:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46430198] [2024-10-11 00:54:02,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:02,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 00:54:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 00:54:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 00:54:02,382 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 00:54:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:02,566 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-11 00:54:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 00:54:02,568 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 00:54:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:02,576 INFO L225 Difference]: With dead ends: 89 [2024-10-11 00:54:02,580 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 00:54:02,582 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 00:54:02,585 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 00:54:02,586 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 00:54:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 00:54:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-11 00:54:02,614 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 00:54:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-11 00:54:02,617 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-11 00:54:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:02,618 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-11 00:54:02,618 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 00:54:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-11 00:54:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:54:02,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:02,619 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 00:54:02,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 00:54:02,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:02,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-11 00:54:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664296355] [2024-10-11 00:54:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:03,313 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 00:54:03,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:03,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664296355] [2024-10-11 00:54:03,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664296355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:54:03,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:54:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 00:54:03,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641125407] [2024-10-11 00:54:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:03,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:03,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:03,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:54:03,319 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 00:54:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:03,511 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-11 00:54:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:03,511 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 00:54:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:03,512 INFO L225 Difference]: With dead ends: 80 [2024-10-11 00:54:03,512 INFO L226 Difference]: Without dead ends: 44 [2024-10-11 00:54:03,512 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 00:54:03,513 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 00:54:03,513 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 00:54:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-11 00:54:03,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-11 00:54:03,520 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 00:54:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-11 00:54:03,521 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-11 00:54:03,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:03,521 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-11 00:54:03,521 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 00:54:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-11 00:54:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-11 00:54:03,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:03,522 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 00:54:03,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 00:54:03,522 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:03,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:03,523 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-11 00:54:03,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361066413] [2024-10-11 00:54:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:04,164 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 00:54:04,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:04,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361066413] [2024-10-11 00:54:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361066413] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:54:04,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 00:54:04,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 00:54:04,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74965363] [2024-10-11 00:54:04,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:04,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:04,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:04,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:04,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 00:54:04,166 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 00:54:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:04,392 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-11 00:54:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:04,392 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 00:54:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:04,393 INFO L225 Difference]: With dead ends: 75 [2024-10-11 00:54:04,393 INFO L226 Difference]: Without dead ends: 45 [2024-10-11 00:54:04,393 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 00:54:04,394 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 00:54:04,394 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 00:54:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-11 00:54:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-11 00:54:04,400 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 00:54:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-11 00:54:04,401 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-11 00:54:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:04,401 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-11 00:54:04,401 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 00:54:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-11 00:54:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 00:54:04,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:04,402 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 00:54:04,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 00:54:04,405 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:04,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-11 00:54:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632660397] [2024-10-11 00:54:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:05,108 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 00:54:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632660397] [2024-10-11 00:54:05,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632660397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581549182] [2024-10-11 00:54:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:05,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:05,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:05,115 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 00:54:05,121 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 00:54:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:06,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 00:54:06,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:06,217 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 00:54:06,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:06,231 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 00:54:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581549182] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:06,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:06,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:54:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492756157] [2024-10-11 00:54:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:06,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:54:06,233 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 00:54:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:06,443 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-11 00:54:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:06,444 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 00:54:06,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:06,444 INFO L225 Difference]: With dead ends: 66 [2024-10-11 00:54:06,444 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 00:54:06,445 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 00:54:06,446 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 00:54:06,446 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 00:54:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 00:54:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-11 00:54:06,449 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 00:54:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-11 00:54:06,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-11 00:54:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:06,450 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-11 00:54:06,450 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 00:54:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-11 00:54:06,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 00:54:06,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:06,451 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 00:54:06,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 00:54:06,655 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 00:54:06,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:06,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-11 00:54:06,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:06,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307664631] [2024-10-11 00:54:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:06,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:07,374 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 00:54:07,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307664631] [2024-10-11 00:54:07,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307664631] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:07,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903809606] [2024-10-11 00:54:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:07,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:07,377 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 00:54:07,378 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 00:54:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:08,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 00:54:08,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:08,292 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 00:54:08,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:08,301 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 00:54:08,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903809606] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:08,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:08,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:54:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219526785] [2024-10-11 00:54:08,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:08,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:08,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:08,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:08,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:54:08,302 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 00:54:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:08,475 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-11 00:54:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:08,476 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 00:54:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:08,476 INFO L225 Difference]: With dead ends: 57 [2024-10-11 00:54:08,476 INFO L226 Difference]: Without dead ends: 47 [2024-10-11 00:54:08,477 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 00:54:08,477 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 00:54:08,477 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 00:54:08,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-11 00:54:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-11 00:54:08,483 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 00:54:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-11 00:54:08,484 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-11 00:54:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:08,484 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-11 00:54:08,484 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 00:54:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-11 00:54:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 00:54:08,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:08,485 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 00:54:08,507 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 00:54:08,685 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 00:54:08,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:08,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-11 00:54:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:08,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166802806] [2024-10-11 00:54:08,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:08,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:09,253 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 00:54:09,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:09,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166802806] [2024-10-11 00:54:09,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166802806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:09,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983968968] [2024-10-11 00:54:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:09,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:09,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:09,260 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 00:54:09,262 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 00:54:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:10,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 00:54:10,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:10,165 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 00:54:10,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:10,179 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 00:54:10,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983968968] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:10,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:10,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-11 00:54:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488349835] [2024-10-11 00:54:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:10,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 00:54:10,181 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 00:54:10,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:10,352 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-11 00:54:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:10,352 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 00:54:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:10,353 INFO L225 Difference]: With dead ends: 74 [2024-10-11 00:54:10,354 INFO L226 Difference]: Without dead ends: 48 [2024-10-11 00:54:10,354 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 00:54:10,356 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 00:54:10,357 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 00:54:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-11 00:54:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-11 00:54:10,365 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 00:54:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-11 00:54:10,365 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-11 00:54:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:10,365 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-11 00:54:10,365 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 00:54:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-11 00:54:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 00:54:10,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:10,366 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 00:54:10,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 00:54:10,566 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 00:54:10,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:10,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-11 00:54:10,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:10,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199431973] [2024-10-11 00:54:10,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:10,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:11,122 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 00:54:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:11,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199431973] [2024-10-11 00:54:11,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199431973] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:11,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193040498] [2024-10-11 00:54:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:11,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:11,125 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 00:54:11,127 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 00:54:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:12,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:54:12,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:12,045 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 00:54:12,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:12,058 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 00:54:12,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193040498] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:12,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:12,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 00:54:12,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936357096] [2024-10-11 00:54:12,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:12,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:12,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:54:12,064 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 00:54:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:12,250 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-11 00:54:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:12,251 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 00:54:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:12,254 INFO L225 Difference]: With dead ends: 64 [2024-10-11 00:54:12,254 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 00:54:12,255 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 00:54:12,255 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 00:54:12,255 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 00:54:12,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 00:54:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-11 00:54:12,258 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 00:54:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-11 00:54:12,259 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-11 00:54:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:12,259 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-11 00:54:12,259 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 00:54:12,259 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-11 00:54:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 00:54:12,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:12,260 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 00:54:12,283 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 00:54:12,460 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 00:54:12,461 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:12,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:12,461 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-11 00:54:12,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:12,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006891491] [2024-10-11 00:54:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:12,977 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 00:54:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006891491] [2024-10-11 00:54:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006891491] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371243763] [2024-10-11 00:54:12,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:12,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:12,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:12,982 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 00:54:12,983 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 00:54:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:13,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:54:13,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:13,831 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 00:54:13,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:13,841 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 00:54:13,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371243763] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:13,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:13,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-11 00:54:13,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345517618] [2024-10-11 00:54:13,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:13,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 00:54:13,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:13,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 00:54:13,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 00:54:13,843 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 00:54:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:14,015 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-11 00:54:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 00:54:14,016 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 00:54:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:14,017 INFO L225 Difference]: With dead ends: 54 [2024-10-11 00:54:14,017 INFO L226 Difference]: Without dead ends: 50 [2024-10-11 00:54:14,017 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 00:54:14,017 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 00:54:14,018 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 00:54:14,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-11 00:54:14,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-11 00:54:14,020 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 00:54:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-11 00:54:14,020 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-11 00:54:14,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:14,021 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-11 00:54:14,021 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 00:54:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-11 00:54:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 00:54:14,021 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:14,021 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 00:54:14,044 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 00:54:14,222 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 00:54:14,222 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:14,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-11 00:54:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:14,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795555894] [2024-10-11 00:54:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:15,126 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 00:54:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795555894] [2024-10-11 00:54:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795555894] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501492082] [2024-10-11 00:54:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:15,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:15,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:15,128 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 00:54:15,131 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 00:54:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:16,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 00:54:16,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:16,021 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 00:54:16,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:16,043 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 00:54:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501492082] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:16,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-11 00:54:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302856754] [2024-10-11 00:54:16,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:16,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 00:54:16,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 00:54:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:54:16,045 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 00:54:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:16,332 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-11 00:54:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 00:54:16,332 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 00:54:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:16,333 INFO L225 Difference]: With dead ends: 95 [2024-10-11 00:54:16,333 INFO L226 Difference]: Without dead ends: 60 [2024-10-11 00:54:16,333 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 00:54:16,333 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 00:54:16,334 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 00:54:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-11 00:54:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-11 00:54:16,337 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 00:54:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-11 00:54:16,338 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-11 00:54:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:16,338 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-11 00:54:16,338 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 00:54:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-11 00:54:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-11 00:54:16,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:16,339 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 00:54:16,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 00:54:16,539 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 00:54:16,539 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:16,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-11 00:54:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:16,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909593198] [2024-10-11 00:54:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:17,125 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 00:54:17,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909593198] [2024-10-11 00:54:17,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909593198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214796783] [2024-10-11 00:54:17,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:54:17,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:17,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:17,127 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 00:54:17,128 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 00:54:18,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:54:18,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:54:18,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 00:54:18,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:18,046 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 00:54:18,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:18,065 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 00:54:18,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214796783] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:18,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:18,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-11 00:54:18,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210586818] [2024-10-11 00:54:18,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:18,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:54:18,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:54:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 00:54:18,067 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 00:54:18,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:18,264 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-11 00:54:18,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:54:18,265 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 00:54:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:18,265 INFO L225 Difference]: With dead ends: 70 [2024-10-11 00:54:18,265 INFO L226 Difference]: Without dead ends: 61 [2024-10-11 00:54:18,265 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 00:54:18,266 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 00:54:18,266 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 00:54:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-11 00:54:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-11 00:54:18,269 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 00:54:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-11 00:54:18,269 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-11 00:54:18,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:18,270 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-11 00:54:18,270 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 00:54:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-11 00:54:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 00:54:18,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:18,271 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 00:54:18,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 00:54:18,474 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 00:54:18,475 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:18,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-11 00:54:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:18,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796703011] [2024-10-11 00:54:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:19,085 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 00:54:19,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796703011] [2024-10-11 00:54:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796703011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335811741] [2024-10-11 00:54:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:19,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:19,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:19,090 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 00:54:19,091 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 00:54:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:19,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:54:20,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:20,016 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 00:54:20,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:20,038 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 00:54:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335811741] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:20,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-11 00:54:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564557525] [2024-10-11 00:54:20,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:20,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 00:54:20,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:20,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 00:54:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:54:20,040 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 00:54:20,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:20,316 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-11 00:54:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 00:54:20,317 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 00:54:20,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:20,317 INFO L225 Difference]: With dead ends: 116 [2024-10-11 00:54:20,317 INFO L226 Difference]: Without dead ends: 71 [2024-10-11 00:54:20,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 00:54:20,318 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 00:54:20,318 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 00:54:20,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-11 00:54:20,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-11 00:54:20,321 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 00:54:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-11 00:54:20,322 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-11 00:54:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:20,322 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-11 00:54:20,322 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 00:54:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-11 00:54:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 00:54:20,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:20,323 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 00:54:20,356 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 00:54:20,523 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 00:54:20,524 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:20,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-11 00:54:20,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:20,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854097590] [2024-10-11 00:54:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:20,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:21,171 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 00:54:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854097590] [2024-10-11 00:54:21,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854097590] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308383414] [2024-10-11 00:54:21,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:54:21,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:21,175 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 00:54:21,176 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 00:54:22,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:54:22,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:54:22,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 00:54:22,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 00:54:22,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:22,284 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 00:54:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308383414] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:22,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 15 [2024-10-11 00:54:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765620669] [2024-10-11 00:54:22,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:22,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 00:54:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:22,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 00:54:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-11 00:54:22,286 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 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 00:54:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:22,689 INFO L93 Difference]: Finished difference Result 135 states and 182 transitions. [2024-10-11 00:54:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 00:54:22,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 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) Word has length 66 [2024-10-11 00:54:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:22,690 INFO L225 Difference]: With dead ends: 135 [2024-10-11 00:54:22,690 INFO L226 Difference]: Without dead ends: 81 [2024-10-11 00:54:22,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-11 00:54:22,691 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 37 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 00:54:22,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 340 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 00:54:22,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-11 00:54:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-11 00:54:22,695 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 00:54:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2024-10-11 00:54:22,695 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 66 [2024-10-11 00:54:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:22,696 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2024-10-11 00:54:22,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 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 00:54:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2024-10-11 00:54:22,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 00:54:22,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:22,697 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 00:54:22,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 00:54:22,900 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 00:54:22,901 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:22,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1529729791, now seen corresponding path program 3 times [2024-10-11 00:54:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:22,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670391860] [2024-10-11 00:54:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:23,705 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 00:54:23,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670391860] [2024-10-11 00:54:23,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670391860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810371254] [2024-10-11 00:54:23,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 00:54:23,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:23,710 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 00:54:23,714 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 00:54:24,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 00:54:24,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:54:24,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 00:54:24,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:24,724 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 00:54:24,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:24,759 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 00:54:24,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810371254] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:24,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:24,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2024-10-11 00:54:24,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286434049] [2024-10-11 00:54:24,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:24,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:54:24,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:54:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-11 00:54:24,760 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 00:54:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:24,962 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2024-10-11 00:54:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:54:24,962 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 00:54:24,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:24,964 INFO L225 Difference]: With dead ends: 124 [2024-10-11 00:54:24,964 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 00:54:24,964 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 00:54:24,964 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 00:54:24,965 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 00:54:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 00:54:24,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-10-11 00:54:24,970 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 00:54:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2024-10-11 00:54:24,971 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 70 [2024-10-11 00:54:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:24,971 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2024-10-11 00:54:24,971 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 00:54:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2024-10-11 00:54:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 00:54:24,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:24,973 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 00:54:24,995 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 00:54:25,173 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 00:54:25,174 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:25,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:25,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1554558736, now seen corresponding path program 1 times [2024-10-11 00:54:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:25,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348429434] [2024-10-11 00:54:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:25,938 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 00:54:25,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:25,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348429434] [2024-10-11 00:54:25,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348429434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:25,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005076485] [2024-10-11 00:54:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:25,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:25,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:25,940 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 00:54:25,947 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 00:54:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:26,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:54:26,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:26,896 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 00:54:26,896 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 00:54:26,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005076485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 00:54:26,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 00:54:26,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-11 00:54:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344615781] [2024-10-11 00:54:26,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:26,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:54:26,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:54:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 00:54:26,898 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 00:54:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:27,071 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2024-10-11 00:54:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:54:27,072 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 00:54:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:27,072 INFO L225 Difference]: With dead ends: 147 [2024-10-11 00:54:27,073 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 00:54:27,073 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 00:54:27,073 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 00:54:27,074 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 00:54:27,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 00:54:27,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-11 00:54:27,078 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 00:54:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-11 00:54:27,078 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 73 [2024-10-11 00:54:27,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:27,078 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-11 00:54:27,078 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 00:54:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-11 00:54:27,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 00:54:27,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:27,079 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 00:54:27,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 00:54:27,280 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 00:54:27,280 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:27,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1120259536, now seen corresponding path program 1 times [2024-10-11 00:54:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:27,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167177480] [2024-10-11 00:54:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:28,076 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 00:54:28,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167177480] [2024-10-11 00:54:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167177480] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822815850] [2024-10-11 00:54:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:28,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:28,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:28,079 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 00:54:28,081 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 00:54:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:29,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 5490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:54:29,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:29,187 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 00:54:29,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:29,213 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 00:54:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822815850] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:29,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:29,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-11 00:54:29,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496258471] [2024-10-11 00:54:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:29,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:54:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:54:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:54:29,215 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 00:54:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:29,411 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2024-10-11 00:54:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:54:29,411 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 00:54:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:29,412 INFO L225 Difference]: With dead ends: 124 [2024-10-11 00:54:29,412 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 00:54:29,412 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 00:54:29,412 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 00:54:29,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 00:54:29,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 00:54:29,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-11 00:54:29,418 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 00:54:29,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-10-11 00:54:29,418 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 76 [2024-10-11 00:54:29,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:29,419 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-10-11 00:54:29,419 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 00:54:29,419 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-10-11 00:54:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 00:54:29,419 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:29,419 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 00:54:29,444 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 00:54:29,620 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 00:54:29,620 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:29,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash -604552515, now seen corresponding path program 1 times [2024-10-11 00:54:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:29,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591816625] [2024-10-11 00:54:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:29,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:30,358 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 00:54:30,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591816625] [2024-10-11 00:54:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591816625] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:30,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358647319] [2024-10-11 00:54:30,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:30,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:30,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:30,361 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 00:54:30,367 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 00:54:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:31,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 00:54:31,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:31,394 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 00:54:31,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:31,426 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 00:54:31,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358647319] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:31,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:31,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-11 00:54:31,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858787650] [2024-10-11 00:54:31,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:31,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:54:31,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:31,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:54:31,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-11 00:54:31,427 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 00:54:31,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:31,598 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-11 00:54:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:54:31,599 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 00:54:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:31,600 INFO L225 Difference]: With dead ends: 107 [2024-10-11 00:54:31,600 INFO L226 Difference]: Without dead ends: 88 [2024-10-11 00:54:31,600 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 00:54:31,600 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 00:54:31,601 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 00:54:31,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-11 00:54:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-11 00:54:31,605 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 00:54:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-10-11 00:54:31,605 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2024-10-11 00:54:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:31,606 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-10-11 00:54:31,606 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 00:54:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-10-11 00:54:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 00:54:31,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:31,606 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 00:54:31,631 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 00:54:31,807 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 00:54:31,807 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:31,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -550947933, now seen corresponding path program 1 times [2024-10-11 00:54:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:31,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092735800] [2024-10-11 00:54:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:32,533 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 00:54:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092735800] [2024-10-11 00:54:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092735800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264244163] [2024-10-11 00:54:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:32,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:32,535 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 00:54:32,537 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 00:54:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:33,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 00:54:33,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:33,680 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 00:54:33,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:33,714 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 00:54:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264244163] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 00:54:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-11 00:54:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733509786] [2024-10-11 00:54:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 00:54:33,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 00:54:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 00:54:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-11 00:54:33,715 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 00:54:33,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:33,925 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-10-11 00:54:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 00:54:33,926 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 00:54:33,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:33,926 INFO L225 Difference]: With dead ends: 157 [2024-10-11 00:54:33,926 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 00:54:33,927 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 00:54:33,927 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 00:54:33,931 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 00:54:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 00:54:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-11 00:54:33,936 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 00:54:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-11 00:54:33,937 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 79 [2024-10-11 00:54:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:33,937 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-11 00:54:33,937 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 00:54:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-11 00:54:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 00:54:33,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:33,938 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 00:54:33,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 00:54:34,141 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 00:54:34,142 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:34,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1880924804, now seen corresponding path program 1 times [2024-10-11 00:54:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:34,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296691974] [2024-10-11 00:54:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:34,860 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 00:54:34,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296691974] [2024-10-11 00:54:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296691974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109848873] [2024-10-11 00:54:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:34,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:34,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:34,862 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 00:54:34,863 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 00:54:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:35,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 5502 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 00:54:35,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:35,852 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 00:54:35,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:35,933 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 00:54:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109848873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:35,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:35,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-11 00:54:35,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902229185] [2024-10-11 00:54:35,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:35,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 00:54:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:35,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 00:54:35,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-11 00:54:35,935 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 00:54:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:36,434 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions. [2024-10-11 00:54:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 00:54:36,434 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 00:54:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:36,435 INFO L225 Difference]: With dead ends: 177 [2024-10-11 00:54:36,435 INFO L226 Difference]: Without dead ends: 108 [2024-10-11 00:54:36,435 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 00:54:36,436 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 48 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 00:54:36,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 00:54:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-11 00:54:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-11 00:54:36,440 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 00:54:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2024-10-11 00:54:36,441 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 80 [2024-10-11 00:54:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:36,441 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2024-10-11 00:54:36,441 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 00:54:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2024-10-11 00:54:36,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-11 00:54:36,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:36,442 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 00:54:36,465 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 00:54:36,642 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 00:54:36,643 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:36,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash 213343619, now seen corresponding path program 2 times [2024-10-11 00:54:36,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:36,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244238487] [2024-10-11 00:54:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:37,628 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 00:54:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244238487] [2024-10-11 00:54:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244238487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502192851] [2024-10-11 00:54:37,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 00:54:37,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:37,632 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 00:54:37,640 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 00:54:38,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 00:54:38,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:54:38,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 5613 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 00:54:38,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:38,855 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 00:54:38,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:38,949 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 00:54:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502192851] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:38,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:38,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-11 00:54:38,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404434813] [2024-10-11 00:54:38,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:38,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 00:54:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:38,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 00:54:38,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-11 00:54:38,951 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 00:54:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:39,656 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-10-11 00:54:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 00:54:39,657 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 00:54:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:39,657 INFO L225 Difference]: With dead ends: 206 [2024-10-11 00:54:39,657 INFO L226 Difference]: Without dead ends: 115 [2024-10-11 00:54:39,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-10-11 00:54:39,658 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 31 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 00:54:39,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 616 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 00:54:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-11 00:54:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-11 00:54:39,663 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 00:54:39,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2024-10-11 00:54:39,663 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 99 [2024-10-11 00:54:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:39,664 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2024-10-11 00:54:39,664 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 00:54:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2024-10-11 00:54:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-11 00:54:39,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:39,665 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 00:54:39,693 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 00:54:39,865 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 00:54:39,866 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:39,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash -774915223, now seen corresponding path program 3 times [2024-10-11 00:54:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654426246] [2024-10-11 00:54:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:41,025 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 00:54:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:41,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654426246] [2024-10-11 00:54:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654426246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:41,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642330381] [2024-10-11 00:54:41,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 00:54:41,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:41,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:41,027 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 00:54:41,028 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 00:54:42,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 00:54:42,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:54:42,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 00:54:42,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-10-11 00:54:42,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:42,544 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 00:54:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642330381] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:42,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 6] total 24 [2024-10-11 00:54:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882169864] [2024-10-11 00:54:42,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:42,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 00:54:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 00:54:42,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2024-10-11 00:54:42,547 INFO L87 Difference]: Start difference. First operand 113 states and 145 transitions. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 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 00:54:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:43,794 INFO L93 Difference]: Finished difference Result 203 states and 268 transitions. [2024-10-11 00:54:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 00:54:43,795 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 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) Word has length 104 [2024-10-11 00:54:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:43,796 INFO L225 Difference]: With dead ends: 203 [2024-10-11 00:54:43,796 INFO L226 Difference]: Without dead ends: 155 [2024-10-11 00:54:43,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2024-10-11 00:54:43,797 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 59 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-11 00:54:43,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 869 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-11 00:54:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-11 00:54:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 139. [2024-10-11 00:54:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3043478260869565) internal successors, (180), 138 states have internal predecessors, (180), 0 states have call successors, (0), 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 00:54:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2024-10-11 00:54:43,805 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 104 [2024-10-11 00:54:43,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:43,806 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2024-10-11 00:54:43,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 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 00:54:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2024-10-11 00:54:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-10-11 00:54:43,807 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:43,807 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 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] [2024-10-11 00:54:43,831 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 00:54:44,010 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 00:54:44,011 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:44,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:44,011 INFO L85 PathProgramCache]: Analyzing trace with hash -47110729, now seen corresponding path program 4 times [2024-10-11 00:54:44,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:44,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842587787] [2024-10-11 00:54:44,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:44,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-11 00:54:45,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:45,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842587787] [2024-10-11 00:54:45,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842587787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:45,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973485734] [2024-10-11 00:54:45,184 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 00:54:45,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:45,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:45,186 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 00:54:45,187 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 00:54:46,238 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 00:54:46,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 00:54:46,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 5706 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 00:54:46,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 00:54:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-10-11 00:54:46,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 00:54:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-11 00:54:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973485734] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 00:54:46,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 00:54:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-11 00:54:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075149104] [2024-10-11 00:54:46,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 00:54:46,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 00:54:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 00:54:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 00:54:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-11 00:54:46,475 INFO L87 Difference]: Start difference. First operand 139 states and 180 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 00:54:47,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 00:54:47,253 INFO L93 Difference]: Finished difference Result 233 states and 311 transitions. [2024-10-11 00:54:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 00:54:47,254 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 119 [2024-10-11 00:54:47,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 00:54:47,255 INFO L225 Difference]: With dead ends: 233 [2024-10-11 00:54:47,255 INFO L226 Difference]: Without dead ends: 162 [2024-10-11 00:54:47,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 228 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 00:54:47,256 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 66 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 00:54:47,256 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 609 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 00:54:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-11 00:54:47,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2024-10-11 00:54:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3081761006289307) internal successors, (208), 159 states have internal predecessors, (208), 0 states have call successors, (0), 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 00:54:47,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 208 transitions. [2024-10-11 00:54:47,263 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 208 transitions. Word has length 119 [2024-10-11 00:54:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 00:54:47,264 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 208 transitions. [2024-10-11 00:54:47,264 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 00:54:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 208 transitions. [2024-10-11 00:54:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-11 00:54:47,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 00:54:47,265 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 10, 10, 10, 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] [2024-10-11 00:54:47,287 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 00:54:47,468 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 00:54:47,469 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 00:54:47,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 00:54:47,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1655509955, now seen corresponding path program 5 times [2024-10-11 00:54:47,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 00:54:47,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497530206] [2024-10-11 00:54:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 00:54:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 00:54:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 00:54:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-11 00:54:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 00:54:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497530206] [2024-10-11 00:54:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497530206] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 00:54:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038582759] [2024-10-11 00:54:48,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 00:54:48,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 00:54:48,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 00:54:48,760 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 00:54:48,762 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