./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_98_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_98_unsafe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d0c0c1c0ba459625731727a6f30de42e5c6cb2d39d2c2da8ab0ce6e68576c47 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 23:09:26,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 23:09:26,621 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 23:09:26,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 23:09:26,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 23:09:26,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 23:09:26,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 23:09:26,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 23:09:26,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 23:09:26,658 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 23:09:26,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 23:09:26,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 23:09:26,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 23:09:26,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 23:09:26,660 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 23:09:26,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 23:09:26,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 23:09:26,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 23:09:26,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 23:09:26,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 23:09:26,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 23:09:26,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 23:09:26,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 23:09:26,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 23:09:26,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 23:09:26,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 23:09:26,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 23:09:26,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 23:09:26,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 23:09:26,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 23:09:26,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 23:09:26,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 23:09:26,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:09:26,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 23:09:26,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 23:09:26,665 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 23:09:26,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 23:09:26,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 23:09:26,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 23:09:26,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 23:09:26,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 23:09:26,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 23:09:26,670 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d0c0c1c0ba459625731727a6f30de42e5c6cb2d39d2c2da8ab0ce6e68576c47 [2024-10-23 23:09:26,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 23:09:26,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 23:09:26,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 23:09:26,916 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 23:09:26,916 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 23:09:26,917 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_98_unsafe.c-amalgamation.i [2024-10-23 23:09:28,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 23:09:28,542 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 23:09:28,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_98_unsafe.c-amalgamation.i [2024-10-23 23:09:28,568 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2389ad58e/b850932211aa4378a7fda3ed41cdc0aa/FLAG029f93990 [2024-10-23 23:09:28,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2389ad58e/b850932211aa4378a7fda3ed41cdc0aa [2024-10-23 23:09:28,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 23:09:28,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 23:09:28,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 23:09:28,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 23:09:28,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 23:09:28,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:09:28" (1/1) ... [2024-10-23 23:09:28,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2825b828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:28, skipping insertion in model container [2024-10-23 23:09:28,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:09:28" (1/1) ... [2024-10-23 23:09:28,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 23:09:29,332 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_98_unsafe.c-amalgamation.i[64319,64332] [2024-10-23 23:09:29,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:09:29,676 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 23:09:29,752 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_98_unsafe.c-amalgamation.i[64319,64332] [2024-10-23 23:09:29,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:09:30,304 INFO L204 MainTranslator]: Completed translation [2024-10-23 23:09:30,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30 WrapperNode [2024-10-23 23:09:30,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 23:09:30,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 23:09:30,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 23:09:30,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 23:09:30,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,714 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-23 23:09:30,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 23:09:30,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 23:09:30,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 23:09:30,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 23:09:30,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,805 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 65, 3, 4097, 65, 257, 5, 14, 70, 25]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 64, 0, 4096, 64, 256, 4, 8, 64, 0]. The 14 writes are split as follows [0, 0, 0, 0, 1, 0, 0, 0, 0, 3, 2, 8]. [2024-10-23 23:09:30,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:30,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:31,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:31,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:31,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 23:09:31,115 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 23:09:31,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 23:09:31,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 23:09:31,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (1/1) ... [2024-10-23 23:09:31,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:09:31,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:31,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 23:09:31,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 23:09:31,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 23:09:31,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 23:09:31,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 23:09:31,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 23:09:31,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 23:09:31,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 23:09:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 23:09:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 23:09:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 23:09:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 23:09:31,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 23:09:31,334 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 23:09:31,335 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 23:09:37,113 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-23 23:09:37,113 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 23:09:37,374 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 23:09:37,374 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 23:09:37,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:09:37 BoogieIcfgContainer [2024-10-23 23:09:37,375 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 23:09:37,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 23:09:37,376 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 23:09:37,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 23:09:37,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:09:28" (1/3) ... [2024-10-23 23:09:37,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4652e4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:09:37, skipping insertion in model container [2024-10-23 23:09:37,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:09:30" (2/3) ... [2024-10-23 23:09:37,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4652e4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:09:37, skipping insertion in model container [2024-10-23 23:09:37,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:09:37" (3/3) ... [2024-10-23 23:09:37,381 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_98_unsafe.c-amalgamation.i [2024-10-23 23:09:37,392 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 23:09:37,392 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 23:09:37,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 23:09:37,434 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;@4a78d0ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 23:09:37,434 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 23:09:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:09:37,442 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:37,442 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:37,442 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:37,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:37,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-23 23:09:37,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:37,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738267869] [2024-10-23 23:09:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:37,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:09:38,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738267869] [2024-10-23 23:09:38,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738267869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:09:38,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:09:38,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 23:09:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797908650] [2024-10-23 23:09:38,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:38,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 23:09:38,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 23:09:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:09:38,256 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:38,476 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-23 23:09:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 23:09:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:09:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:38,484 INFO L225 Difference]: With dead ends: 113 [2024-10-23 23:09:38,484 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:09:38,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:09:38,489 INFO L432 NwaCegarLoop]: 59 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, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:38,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:09:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:09:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:09:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-23 23:09:38,515 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-23 23:09:38,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:38,516 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-23 23:09:38,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-23 23:09:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:09:38,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:38,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:38,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 23:09:38,517 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:38,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-23 23:09:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:38,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611561378] [2024-10-23 23:09:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:38,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:09:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611561378] [2024-10-23 23:09:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611561378] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:09:39,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:09:39,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:09:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46762966] [2024-10-23 23:09:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:39,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:09:39,158 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:39,418 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-23 23:09:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:39,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:09:39,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:39,419 INFO L225 Difference]: With dead ends: 104 [2024-10-23 23:09:39,419 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:09:39,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:09:39,420 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:39,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:09:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:09:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:09:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-23 23:09:39,425 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-23 23:09:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:39,425 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-23 23:09:39,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-23 23:09:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:09:39,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:39,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:39,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 23:09:39,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:39,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-23 23:09:39,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:39,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793130512] [2024-10-23 23:09:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:39,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:09:40,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:40,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793130512] [2024-10-23 23:09:40,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793130512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:09:40,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:09:40,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:09:40,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493585076] [2024-10-23 23:09:40,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:40,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:40,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:09:40,337 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:40,576 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-23 23:09:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:40,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:09:40,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:40,577 INFO L225 Difference]: With dead ends: 87 [2024-10-23 23:09:40,577 INFO L226 Difference]: Without dead ends: 57 [2024-10-23 23:09:40,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:09:40,579 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:40,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:09:40,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-23 23:09:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-23 23:09:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-23 23:09:40,585 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-23 23:09:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:40,585 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-23 23:09:40,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-23 23:09:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 23:09:40,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:40,586 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:40,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 23:09:40,587 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:40,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-23 23:09:40,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:40,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321706914] [2024-10-23 23:09:40,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:40,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:41,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:09:41,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321706914] [2024-10-23 23:09:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321706914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426933332] [2024-10-23 23:09:41,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:41,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:41,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:41,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:41,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 23:09:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:42,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 23:09:42,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:09:42,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:09:42,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426933332] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:42,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:09:42,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:09:42,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098890815] [2024-10-23 23:09:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:42,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:09:42,839 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:43,096 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-23 23:09:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:43,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-23 23:09:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:43,097 INFO L225 Difference]: With dead ends: 78 [2024-10-23 23:09:43,097 INFO L226 Difference]: Without dead ends: 58 [2024-10-23 23:09:43,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:09:43,098 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:43,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:09:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-23 23:09:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-23 23:09:43,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-23 23:09:43,103 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-23 23:09:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:43,103 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-23 23:09:43,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-23 23:09:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 23:09:43,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:43,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:43,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 23:09:43,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:43,309 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:43,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:43,309 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-23 23:09:43,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871107909] [2024-10-23 23:09:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:43,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:09:44,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871107909] [2024-10-23 23:09:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871107909] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525832935] [2024-10-23 23:09:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:44,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:44,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:44,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:44,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 23:09:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:45,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 23:09:45,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:09:45,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:09:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525832935] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:45,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:09:45,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:09:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239002194] [2024-10-23 23:09:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:45,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:09:45,364 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:45,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:45,610 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-23 23:09:45,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:45,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-23 23:09:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:45,611 INFO L225 Difference]: With dead ends: 69 [2024-10-23 23:09:45,611 INFO L226 Difference]: Without dead ends: 59 [2024-10-23 23:09:45,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:09:45,612 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:45,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:09:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-23 23:09:45,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-23 23:09:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:45,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-23 23:09:45,617 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-23 23:09:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:45,617 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-23 23:09:45,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-23 23:09:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 23:09:45,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:45,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:45,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 23:09:45,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:45,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:45,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-23 23:09:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887446284] [2024-10-23 23:09:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:09:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887446284] [2024-10-23 23:09:46,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887446284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:46,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276317360] [2024-10-23 23:09:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:46,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:46,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:46,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 23:09:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:47,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 23:09:47,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:09:47,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:09:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276317360] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:47,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:09:47,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:09:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558364341] [2024-10-23 23:09:47,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:47,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:47,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:47,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:09:47,869 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:48,098 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-23 23:09:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:48,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-23 23:09:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:48,099 INFO L225 Difference]: With dead ends: 86 [2024-10-23 23:09:48,099 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 23:09:48,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:09:48,100 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:48,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:09:48,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 23:09:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 23:09:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-23 23:09:48,103 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-23 23:09:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:48,103 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-23 23:09:48,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-23 23:09:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-23 23:09:48,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:48,104 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:48,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 23:09:48,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:48,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:48,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-23 23:09:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:48,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943468242] [2024-10-23 23:09:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:48,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:09:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943468242] [2024-10-23 23:09:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943468242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221335166] [2024-10-23 23:09:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:48,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:48,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:48,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 23:09:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:50,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:09:50,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:09:50,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:09:50,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221335166] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:50,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:09:50,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:09:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525032710] [2024-10-23 23:09:50,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:50,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:50,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:09:50,064 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:50,272 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-23 23:09:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:50,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-23 23:09:50,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:50,274 INFO L225 Difference]: With dead ends: 76 [2024-10-23 23:09:50,274 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 23:09:50,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:09:50,274 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:50,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:09:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 23:09:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 23:09:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-23 23:09:50,278 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-23 23:09:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:50,278 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-23 23:09:50,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-23 23:09:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 23:09:50,279 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:50,279 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:50,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 23:09:50,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:50,480 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:50,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-23 23:09:50,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:50,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178959333] [2024-10-23 23:09:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:50,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:09:51,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:51,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178959333] [2024-10-23 23:09:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178959333] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:51,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394028228] [2024-10-23 23:09:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:51,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:51,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 23:09:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:52,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:09:52,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:09:52,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:09:52,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394028228] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:52,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:09:52,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:09:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943563619] [2024-10-23 23:09:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:52,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:09:52,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:09:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:09:52,172 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:52,453 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-23 23:09:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:09:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-23 23:09:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:52,454 INFO L225 Difference]: With dead ends: 66 [2024-10-23 23:09:52,454 INFO L226 Difference]: Without dead ends: 62 [2024-10-23 23:09:52,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:09:52,455 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:52,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:09:52,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-23 23:09:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-23 23:09:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-23 23:09:52,459 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-23 23:09:52,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:52,459 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-23 23:09:52,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-23 23:09:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-23 23:09:52,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:52,460 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:52,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 23:09:52,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:52,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:52,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-23 23:09:52,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:52,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75269596] [2024-10-23 23:09:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:52,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:09:53,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75269596] [2024-10-23 23:09:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75269596] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411235836] [2024-10-23 23:09:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:53,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:53,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:53,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:53,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 23:09:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:54,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-23 23:09:54,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:09:54,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:09:54,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411235836] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:54,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:09:54,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-23 23:09:54,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630507461] [2024-10-23 23:09:54,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:09:54,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:09:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:54,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:09:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:09:54,765 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:55,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:55,065 INFO L93 Difference]: Finished difference Result 72 states and 95 transitions. [2024-10-23 23:09:55,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:09:55,065 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 55 [2024-10-23 23:09:55,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:55,066 INFO L225 Difference]: With dead ends: 72 [2024-10-23 23:09:55,066 INFO L226 Difference]: Without dead ends: 63 [2024-10-23 23:09:55,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:09:55,068 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:55,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:09:55,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-23 23:09:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-23 23:09:55,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2024-10-23 23:09:55,073 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 55 [2024-10-23 23:09:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:55,073 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2024-10-23 23:09:55,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2024-10-23 23:09:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-23 23:09:55,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:55,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:55,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 23:09:55,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:55,279 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:55,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2115565182, now seen corresponding path program 1 times [2024-10-23 23:09:55,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:55,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217934509] [2024-10-23 23:09:55,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:55,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 23:09:56,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:56,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217934509] [2024-10-23 23:09:56,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217934509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:56,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205940761] [2024-10-23 23:09:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:56,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:56,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:56,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:56,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 23:09:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:57,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 6001 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-23 23:09:57,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 23:09:57,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:57,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 23:09:57,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205940761] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:09:57,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:09:57,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-23 23:09:57,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633004687] [2024-10-23 23:09:57,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:09:57,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 23:09:57,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 23:09:57,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:09:57,279 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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) [2024-10-23 23:09:57,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:09:57,556 INFO L93 Difference]: Finished difference Result 102 states and 137 transitions. [2024-10-23 23:09:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 23:09:57,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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) Word has length 58 [2024-10-23 23:09:57,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:09:57,557 INFO L225 Difference]: With dead ends: 102 [2024-10-23 23:09:57,557 INFO L226 Difference]: Without dead ends: 66 [2024-10-23 23:09:57,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:09:57,557 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:09:57,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:09:57,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-10-23 23:09:57,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-10-23 23:09:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:09:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2024-10-23 23:09:57,561 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 58 [2024-10-23 23:09:57,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:09:57,561 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2024-10-23 23:09:57,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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) [2024-10-23 23:09:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2024-10-23 23:09:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-23 23:09:57,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:09:57,562 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:09:57,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-23 23:09:57,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:57,763 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:09:57,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:09:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1974177059, now seen corresponding path program 2 times [2024-10-23 23:09:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:09:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497820901] [2024-10-23 23:09:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:09:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:09:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:09:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 23:09:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:09:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497820901] [2024-10-23 23:09:58,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497820901] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:09:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446471922] [2024-10-23 23:09:58,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:09:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:09:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:09:58,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:09:58,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 23:09:59,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:09:59,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:09:59,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 6034 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:09:59,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:09:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-23 23:09:59,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:09:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-23 23:09:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446471922] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:09:59,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:09:59,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-23 23:09:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203115178] [2024-10-23 23:09:59,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:09:59,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-23 23:09:59,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:09:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-23 23:09:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-23 23:09:59,759 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:10:00,406 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2024-10-23 23:10:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-23 23:10:00,406 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 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) Word has length 61 [2024-10-23 23:10:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:10:00,407 INFO L225 Difference]: With dead ends: 112 [2024-10-23 23:10:00,407 INFO L226 Difference]: Without dead ends: 76 [2024-10-23 23:10:00,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:10:00,408 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 23:10:00,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 434 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 23:10:00,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-23 23:10:00,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-10-23 23:10:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.32) internal successors, (99), 75 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:00,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 99 transitions. [2024-10-23 23:10:00,412 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 99 transitions. Word has length 61 [2024-10-23 23:10:00,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:10:00,412 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 99 transitions. [2024-10-23 23:10:00,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:00,412 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 99 transitions. [2024-10-23 23:10:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-23 23:10:00,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:10:00,413 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:10:00,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 23:10:00,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 23:10:00,614 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:10:00,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:10:00,614 INFO L85 PathProgramCache]: Analyzing trace with hash 381255329, now seen corresponding path program 3 times [2024-10-23 23:10:00,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:10:00,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401687612] [2024-10-23 23:10:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:10:00,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:10:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:10:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 23:10:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:10:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401687612] [2024-10-23 23:10:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401687612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:10:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064251543] [2024-10-23 23:10:01,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:10:01,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:10:01,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:10:01,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:10:01,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 23:10:02,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 23:10:02,797 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:10:02,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 23:10:02,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:10:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 23:10:02,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:10:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 23:10:02,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064251543] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:10:02,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:10:02,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2024-10-23 23:10:02,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260380651] [2024-10-23 23:10:02,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:10:02,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-23 23:10:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:10:02,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-23 23:10:02,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:10:02,880 INFO L87 Difference]: Start difference. First operand 76 states and 99 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:10:03,407 INFO L93 Difference]: Finished difference Result 131 states and 176 transitions. [2024-10-23 23:10:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-23 23:10:03,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-23 23:10:03,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:10:03,408 INFO L225 Difference]: With dead ends: 131 [2024-10-23 23:10:03,408 INFO L226 Difference]: Without dead ends: 86 [2024-10-23 23:10:03,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:10:03,409 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:10:03,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 272 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:10:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-23 23:10:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-23 23:10:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3176470588235294) internal successors, (112), 85 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2024-10-23 23:10:03,414 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 71 [2024-10-23 23:10:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:10:03,414 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2024-10-23 23:10:03,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2024-10-23 23:10:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-23 23:10:03,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:10:03,415 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:10:03,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 23:10:03,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:10:03,617 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:10:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:10:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 409567011, now seen corresponding path program 4 times [2024-10-23 23:10:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:10:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328995186] [2024-10-23 23:10:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:10:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:10:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:10:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 23:10:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:10:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328995186] [2024-10-23 23:10:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328995186] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:10:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988748484] [2024-10-23 23:10:04,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 23:10:04,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:10:04,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:10:04,712 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:10:04,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 23:10:05,816 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 23:10:05,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:10:05,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 6164 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 23:10:05,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:10:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 23:10:05,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:10:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-10-23 23:10:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988748484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:10:06,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:10:06,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 7] total 19 [2024-10-23 23:10:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943075630] [2024-10-23 23:10:06,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:10:06,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-23 23:10:06,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:10:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-23 23:10:06,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-10-23 23:10:06,005 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:06,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:10:06,820 INFO L93 Difference]: Finished difference Result 159 states and 216 transitions. [2024-10-23 23:10:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-23 23:10:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-10-23 23:10:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:10:06,821 INFO L225 Difference]: With dead ends: 159 [2024-10-23 23:10:06,821 INFO L226 Difference]: Without dead ends: 105 [2024-10-23 23:10:06,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-10-23 23:10:06,822 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 23:10:06,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 686 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 23:10:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-23 23:10:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-10-23 23:10:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 104 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2024-10-23 23:10:06,836 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 81 [2024-10-23 23:10:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:10:06,836 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2024-10-23 23:10:06,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:10:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2024-10-23 23:10:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-23 23:10:06,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:10:06,839 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:10:06,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-23 23:10:07,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 23:10:07,040 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:10:07,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:10:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash 731247336, now seen corresponding path program 5 times [2024-10-23 23:10:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:10:07,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768230885] [2024-10-23 23:10:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:10:07,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:10:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:10:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-10-23 23:10:08,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:10:08,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768230885] [2024-10-23 23:10:08,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768230885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:10:08,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383177124] [2024-10-23 23:10:08,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 23:10:08,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:10:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:10:08,122 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:10:08,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process