./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_25_safe.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/cartpole_25_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 613768669e804493120851cfd03327ced761ad8deea81059331be7bcd669e286 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:36:02,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:36:02,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:36:02,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:36:02,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:36:02,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:36:02,431 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:36:02,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:36:02,432 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:36:02,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:36:02,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:36:02,433 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:36:02,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:36:02,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:36:02,435 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:36:02,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:36:02,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:36:02,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:36:02,436 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:36:02,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:36:02,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:36:02,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:36:02,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:36:02,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:36:02,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:36:02,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:36:02,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:36:02,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:36:02,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:36:02,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:36:02,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:36:02,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:36:02,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:36:02,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:36:02,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:36:02,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:36:02,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:36:02,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:36:02,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:36:02,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:36:02,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:36:02,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:36:02,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613768669e804493120851cfd03327ced761ad8deea81059331be7bcd669e286 [2024-10-23 22:36:02,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:36:02,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:36:02,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:36:02,719 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:36:02,720 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:36:02,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_25_safe.c-amalgamation.i [2024-10-23 22:36:04,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:36:04,528 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:36:04,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_25_safe.c-amalgamation.i [2024-10-23 22:36:04,567 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895b8e330/5666c09269b44e529ee3cadaee166356/FLAG4b9b966c7 [2024-10-23 22:36:04,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895b8e330/5666c09269b44e529ee3cadaee166356 [2024-10-23 22:36:04,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:36:04,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:36:04,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:36:04,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:36:04,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:36:04,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:36:04" (1/1) ... [2024-10-23 22:36:04,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3127ecfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:04, skipping insertion in model container [2024-10-23 22:36:04,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:36:04" (1/1) ... [2024-10-23 22:36:04,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:36:05,277 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_25_safe.c-amalgamation.i[63695,63708] [2024-10-23 22:36:05,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:36:05,561 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:36:05,609 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_25_safe.c-amalgamation.i[63695,63708] [2024-10-23 22:36:05,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:36:06,062 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:36:06,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06 WrapperNode [2024-10-23 22:36:06,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:36:06,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:36:06,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:36:06,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:36:06,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,337 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-23 22:36:06,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:36:06,339 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:36:06,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:36:06,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:36:06,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,404 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,482 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 65, 129, 13, 3, 10, 70, 3]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 64, 4096, 64, 128, 0, 2, 4, 64, 0]. The 10 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 4, 0, 3, 2, 1]. [2024-10-23 22:36:06,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,661 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:36:06,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:36:06,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:36:06,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:36:06,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (1/1) ... [2024-10-23 22:36:06,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:36:06,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:06,763 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 22:36:06,765 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 22:36:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:36:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:36:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:36:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:36:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 22:36:06,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 22:36:06,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:36:06,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:36:06,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:36:06,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 22:36:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 22:36:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 22:36:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 22:36:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 22:36:06,983 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:36:06,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:36:12,600 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-23 22:36:12,600 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:36:12,840 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:36:12,841 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 22:36:12,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:36:12 BoogieIcfgContainer [2024-10-23 22:36:12,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:36:12,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:36:12,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:36:12,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:36:12,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:36:04" (1/3) ... [2024-10-23 22:36:12,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fde2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:36:12, skipping insertion in model container [2024-10-23 22:36:12,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:36:06" (2/3) ... [2024-10-23 22:36:12,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15fde2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:36:12, skipping insertion in model container [2024-10-23 22:36:12,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:36:12" (3/3) ... [2024-10-23 22:36:12,850 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_25_safe.c-amalgamation.i [2024-10-23 22:36:12,865 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:36:12,866 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:36:12,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:36:12,935 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;@353ac9bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:36:12,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:36:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:36:12,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:12,946 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:12,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:12,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-23 22:36:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:12,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074412376] [2024-10-23 22:36:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:12,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:13,940 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 22:36:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074412376] [2024-10-23 22:36:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074412376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:13,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:36:13,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:36:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037142442] [2024-10-23 22:36:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:13,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:36:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:36:13,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:36:13,979 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:14,259 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-23 22:36:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:36:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-23 22:36:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:14,270 INFO L225 Difference]: With dead ends: 89 [2024-10-23 22:36:14,270 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:36:14,273 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 22:36:14,277 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:14,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:36:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:36:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-23 22:36:14,313 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-23 22:36:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:14,313 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-23 22:36:14,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-23 22:36:14,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:36:14,314 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:14,315 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:14,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:36:14,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:14,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-23 22:36:14,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:14,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417984708] [2024-10-23 22:36:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:14,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:14,869 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 22:36:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417984708] [2024-10-23 22:36:14,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417984708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:14,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:36:14,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:36:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507480685] [2024-10-23 22:36:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:14,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:14,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:36:14,873 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:15,137 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-23 22:36:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:15,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-23 22:36:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:15,138 INFO L225 Difference]: With dead ends: 80 [2024-10-23 22:36:15,139 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:36:15,139 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 22:36:15,140 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:15,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:36:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:36:15,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-23 22:36:15,146 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-23 22:36:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:15,146 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-23 22:36:15,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-23 22:36:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:36:15,147 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:15,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:15,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:36:15,147 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:15,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-23 22:36:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063256325] [2024-10-23 22:36:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:15,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:16,002 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 22:36:16,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:16,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063256325] [2024-10-23 22:36:16,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063256325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:16,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:36:16,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:36:16,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226981526] [2024-10-23 22:36:16,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:16,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:16,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:36:16,005 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:16,273 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-23 22:36:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-23 22:36:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:16,275 INFO L225 Difference]: With dead ends: 75 [2024-10-23 22:36:16,275 INFO L226 Difference]: Without dead ends: 45 [2024-10-23 22:36:16,275 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 22:36:16,276 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:16,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-23 22:36:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-23 22:36:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-23 22:36:16,288 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-23 22:36:16,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:16,288 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-23 22:36:16,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-23 22:36:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 22:36:16,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:16,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:16,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 22:36:16,291 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:16,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-23 22:36:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112124754] [2024-10-23 22:36:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:17,299 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 22:36:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112124754] [2024-10-23 22:36:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112124754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363748954] [2024-10-23 22:36:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:17,303 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 22:36:17,308 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 22:36:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:18,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:36:18,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:18,642 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 22:36:18,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:18,658 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 22:36:18,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363748954] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:18,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:18,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:36:18,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734759944] [2024-10-23 22:36:18,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:18,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:18,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:18,661 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:18,904 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-23 22:36:18,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-23 22:36:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:18,905 INFO L225 Difference]: With dead ends: 66 [2024-10-23 22:36:18,905 INFO L226 Difference]: Without dead ends: 46 [2024-10-23 22:36:18,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:18,906 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:18,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:18,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-23 22:36:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-23 22:36:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-23 22:36:18,914 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-23 22:36:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:18,914 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-23 22:36:18,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-23 22:36:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-23 22:36:18,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:18,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:18,947 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 22:36:19,116 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 22:36:19,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:19,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:19,117 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-23 22:36:19,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260586015] [2024-10-23 22:36:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:19,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:20,225 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 22:36:20,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:20,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260586015] [2024-10-23 22:36:20,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260586015] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:20,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957574272] [2024-10-23 22:36:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:20,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:20,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:20,230 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 22:36:20,233 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 22:36:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:21,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:36:21,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:21,437 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 22:36:21,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:21,450 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 22:36:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957574272] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:21,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:21,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:36:21,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958604087] [2024-10-23 22:36:21,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:21,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:21,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:21,456 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:21,712 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-23 22:36:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-23 22:36:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:21,714 INFO L225 Difference]: With dead ends: 57 [2024-10-23 22:36:21,715 INFO L226 Difference]: Without dead ends: 47 [2024-10-23 22:36:21,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:21,717 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:21,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-23 22:36:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-23 22:36:21,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-23 22:36:21,725 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-23 22:36:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:21,726 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-23 22:36:21,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-23 22:36:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 22:36:21,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:21,727 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:21,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:21,927 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 22:36:21,928 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:21,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-23 22:36:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173574788] [2024-10-23 22:36:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:21,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:22,772 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 22:36:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173574788] [2024-10-23 22:36:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173574788] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457322986] [2024-10-23 22:36:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:22,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:22,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:22,777 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 22:36:22,780 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 22:36:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:23,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:36:23,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:23,784 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 22:36:23,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:23,801 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 22:36:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457322986] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:23,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:23,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:36:23,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930494137] [2024-10-23 22:36:23,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:23,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:23,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:23,803 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:24,014 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-23 22:36:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:24,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-23 22:36:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:24,015 INFO L225 Difference]: With dead ends: 74 [2024-10-23 22:36:24,015 INFO L226 Difference]: Without dead ends: 48 [2024-10-23 22:36:24,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:36:24,016 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:24,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:24,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-23 22:36:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-23 22:36:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-23 22:36:24,020 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-23 22:36:24,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:24,021 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-23 22:36:24,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:24,021 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-23 22:36:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-23 22:36:24,022 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:24,022 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:24,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:24,223 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 22:36:24,223 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:24,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-23 22:36:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:24,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305835981] [2024-10-23 22:36:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:24,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:25,030 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 22:36:25,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305835981] [2024-10-23 22:36:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305835981] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:25,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825105013] [2024-10-23 22:36:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:25,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:25,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:25,033 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 22:36:25,034 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 22:36:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:26,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:26,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:26,158 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 22:36:26,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:26,173 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 22:36:26,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825105013] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:26,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:26,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:36:26,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309494069] [2024-10-23 22:36:26,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:26,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:36:26,176 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:26,419 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-23 22:36:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-23 22:36:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:26,421 INFO L225 Difference]: With dead ends: 64 [2024-10-23 22:36:26,421 INFO L226 Difference]: Without dead ends: 49 [2024-10-23 22:36:26,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:36:26,422 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:26,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-23 22:36:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-23 22:36:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-23 22:36:26,426 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-23 22:36:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:26,426 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-23 22:36:26,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-23 22:36:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 22:36:26,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:26,427 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 22:36:26,457 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 22:36:26,631 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 22:36:26,632 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:26,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-23 22:36:26,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:26,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399837061] [2024-10-23 22:36:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:27,351 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 22:36:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399837061] [2024-10-23 22:36:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399837061] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213516733] [2024-10-23 22:36:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:27,355 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 22:36:27,356 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 22:36:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:28,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:28,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:28,335 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 22:36:28,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:28,345 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 22:36:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213516733] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:28,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:36:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394802662] [2024-10-23 22:36:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:28,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:36:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:36:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:36:28,347 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:28,500 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-23 22:36:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:36:28,500 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 22:36:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:28,501 INFO L225 Difference]: With dead ends: 54 [2024-10-23 22:36:28,501 INFO L226 Difference]: Without dead ends: 50 [2024-10-23 22:36:28,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:36:28,503 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:28,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 22:36:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-23 22:36:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-23 22:36:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-23 22:36:28,507 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-23 22:36:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:28,508 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-23 22:36:28,508 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 22:36:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-23 22:36:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 22:36:28,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:28,509 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 22:36:28,533 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 22:36:28,710 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 22:36:28,710 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:28,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-23 22:36:28,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:28,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434141960] [2024-10-23 22:36:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:29,391 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 22:36:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434141960] [2024-10-23 22:36:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434141960] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006092257] [2024-10-23 22:36:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:29,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:29,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:29,394 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 22:36:29,396 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 22:36:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:30,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 22:36:30,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:36:30,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:30,411 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 22:36:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006092257] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:30,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 22:36:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813935894] [2024-10-23 22:36:30,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:30,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 22:36:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 22:36:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:36:30,413 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:30,741 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2024-10-23 22:36:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 22:36:30,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-23 22:36:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:30,743 INFO L225 Difference]: With dead ends: 95 [2024-10-23 22:36:30,743 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 22:36:30,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:36:30,744 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:30,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 22:36:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 22:36:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 59 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-23 22:36:30,750 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 43 [2024-10-23 22:36:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:30,750 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-23 22:36:30,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2024-10-23 22:36:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-23 22:36:30,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:30,752 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:30,779 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 22:36:30,952 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 22:36:30,953 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:30,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash 528894503, now seen corresponding path program 2 times [2024-10-23 22:36:30,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:30,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018806164] [2024-10-23 22:36:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:30,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:36:31,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:31,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018806164] [2024-10-23 22:36:31,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018806164] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:31,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413280710] [2024-10-23 22:36:31,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:36:31,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:31,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:31,879 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 22:36:31,880 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 22:36:32,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:36:32,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:32,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 5358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-23 22:36:32,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:36:32,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-23 22:36:32,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413280710] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:32,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:32,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-23 22:36:32,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461488284] [2024-10-23 22:36:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:32,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:32,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:36:32,862 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:33,056 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2024-10-23 22:36:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-23 22:36:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:33,058 INFO L225 Difference]: With dead ends: 70 [2024-10-23 22:36:33,058 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 22:36:33,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:36:33,059 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:33,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 22:36:33,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 22:36:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-23 22:36:33,068 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 53 [2024-10-23 22:36:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:33,069 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-23 22:36:33,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-23 22:36:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-23 22:36:33,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:33,070 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:33,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:33,270 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 22:36:33,271 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:33,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 1 times [2024-10-23 22:36:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379170991] [2024-10-23 22:36:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 22:36:34,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379170991] [2024-10-23 22:36:34,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379170991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:34,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480990899] [2024-10-23 22:36:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:34,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:34,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:34,060 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 22:36:34,062 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 22:36:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:34,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:34,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:36:34,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 22:36:35,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480990899] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:35,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:35,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 22:36:35,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504287422] [2024-10-23 22:36:35,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:35,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 22:36:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:35,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 22:36:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:36:35,008 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:35,292 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-23 22:36:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 22:36:35,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-23 22:36:35,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:35,294 INFO L225 Difference]: With dead ends: 116 [2024-10-23 22:36:35,294 INFO L226 Difference]: Without dead ends: 71 [2024-10-23 22:36:35,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-23 22:36:35,295 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:35,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 192 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:36:35,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-23 22:36:35,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-23 22:36:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-23 22:36:35,304 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-23 22:36:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:35,304 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-23 22:36:35,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-23 22:36:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-23 22:36:35,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:35,306 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:35,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:35,506 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 22:36:35,506 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:35,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 2 times [2024-10-23 22:36:35,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:35,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402997422] [2024-10-23 22:36:35,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:35,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:36:36,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402997422] [2024-10-23 22:36:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402997422] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136039593] [2024-10-23 22:36:36,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:36:36,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:36,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:36,358 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 22:36:36,360 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 22:36:37,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:36:37,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:37,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 5437 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-23 22:36:37,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 22:36:37,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 22:36:37,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136039593] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:37,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:37,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 15 [2024-10-23 22:36:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738665596] [2024-10-23 22:36:37,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:37,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-23 22:36:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:37,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-23 22:36:37,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-23 22:36:37,575 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:38,000 INFO L93 Difference]: Finished difference Result 135 states and 182 transitions. [2024-10-23 22:36:38,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-23 22:36:38,000 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-23 22:36:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:38,001 INFO L225 Difference]: With dead ends: 135 [2024-10-23 22:36:38,001 INFO L226 Difference]: Without dead ends: 81 [2024-10-23 22:36:38,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-23 22:36:38,002 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 37 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:38,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 340 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:36:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-23 22:36:38,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-23 22:36:38,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:38,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2024-10-23 22:36:38,009 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 66 [2024-10-23 22:36:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:38,009 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2024-10-23 22:36:38,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2024-10-23 22:36:38,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-23 22:36:38,013 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:38,014 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:38,038 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 22:36:38,214 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 22:36:38,215 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:38,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1529729791, now seen corresponding path program 3 times [2024-10-23 22:36:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:38,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880672452] [2024-10-23 22:36:38,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:38,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-23 22:36:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880672452] [2024-10-23 22:36:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880672452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133091820] [2024-10-23 22:36:39,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:36:39,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:39,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:39,194 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 22:36:39,195 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 22:36:40,359 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 22:36:40,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:40,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-23 22:36:40,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-23 22:36:40,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 22:36:40,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133091820] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:40,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2024-10-23 22:36:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637745353] [2024-10-23 22:36:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:40,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:40,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 22:36:40,442 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:40,613 INFO L93 Difference]: Finished difference Result 122 states and 163 transitions. [2024-10-23 22:36:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-23 22:36:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:40,614 INFO L225 Difference]: With dead ends: 122 [2024-10-23 22:36:40,614 INFO L226 Difference]: Without dead ends: 82 [2024-10-23 22:36:40,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 22:36:40,615 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:40,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-10-23 22:36:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-10-23 22:36:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 81 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2024-10-23 22:36:40,621 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 70 [2024-10-23 22:36:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:40,622 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2024-10-23 22:36:40,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2024-10-23 22:36:40,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-23 22:36:40,623 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:40,623 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:40,653 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 22:36:40,823 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 22:36:40,824 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:40,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1554558736, now seen corresponding path program 1 times [2024-10-23 22:36:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:40,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511492666] [2024-10-23 22:36:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:40,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 22:36:41,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:41,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511492666] [2024-10-23 22:36:41,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511492666] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:41,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356017395] [2024-10-23 22:36:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:41,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:41,834 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 22:36:41,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 22:36:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:42,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 5476 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:42,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 22:36:42,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:36:42,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356017395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:36:42,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 22:36:42,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-23 22:36:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532086370] [2024-10-23 22:36:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:42,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:36:42,949 INFO L87 Difference]: Start difference. First operand 82 states and 108 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:43,111 INFO L93 Difference]: Finished difference Result 147 states and 197 transitions. [2024-10-23 22:36:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:43,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-23 22:36:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:43,112 INFO L225 Difference]: With dead ends: 147 [2024-10-23 22:36:43,112 INFO L226 Difference]: Without dead ends: 85 [2024-10-23 22:36:43,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:36:43,113 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:43,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-23 22:36:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-23 22:36:43,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:43,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-23 22:36:43,123 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 73 [2024-10-23 22:36:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:43,123 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-23 22:36:43,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-23 22:36:43,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-23 22:36:43,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:43,125 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:43,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:43,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 22:36:43,326 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:43,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1120259536, now seen corresponding path program 1 times [2024-10-23 22:36:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106102510] [2024-10-23 22:36:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-23 22:36:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106102510] [2024-10-23 22:36:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106102510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911265514] [2024-10-23 22:36:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:44,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:44,195 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:44,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 22:36:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:45,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 5490 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:45,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-23 22:36:45,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 22:36:45,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911265514] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:45,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:45,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:36:45,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322802098] [2024-10-23 22:36:45,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:45,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:45,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:45,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:45,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:45,248 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:45,417 INFO L93 Difference]: Finished difference Result 125 states and 166 transitions. [2024-10-23 22:36:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:45,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-10-23 22:36:45,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:45,418 INFO L225 Difference]: With dead ends: 125 [2024-10-23 22:36:45,418 INFO L226 Difference]: Without dead ends: 84 [2024-10-23 22:36:45,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:45,419 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:45,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-23 22:36:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-23 22:36:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3253012048192772) internal successors, (110), 83 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 110 transitions. [2024-10-23 22:36:45,425 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 110 transitions. Word has length 76 [2024-10-23 22:36:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:45,425 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 110 transitions. [2024-10-23 22:36:45,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 110 transitions. [2024-10-23 22:36:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-23 22:36:45,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:45,426 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:45,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:45,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 22:36:45,627 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:45,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash -604552515, now seen corresponding path program 1 times [2024-10-23 22:36:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:45,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748588863] [2024-10-23 22:36:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:45,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-23 22:36:46,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748588863] [2024-10-23 22:36:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748588863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7232495] [2024-10-23 22:36:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:46,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:46,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:46,511 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:46,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 22:36:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:47,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 5493 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:36:47,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-23 22:36:47,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 22:36:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7232495] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:47,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:47,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 22:36:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112282128] [2024-10-23 22:36:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:47,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:47,616 INFO L87 Difference]: Start difference. First operand 84 states and 110 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:47,787 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-23 22:36:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-10-23 22:36:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:47,788 INFO L225 Difference]: With dead ends: 107 [2024-10-23 22:36:47,788 INFO L226 Difference]: Without dead ends: 88 [2024-10-23 22:36:47,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:36:47,789 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:47,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-23 22:36:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-23 22:36:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 87 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:47,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2024-10-23 22:36:47,796 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2024-10-23 22:36:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:47,797 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2024-10-23 22:36:47,797 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 22:36:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2024-10-23 22:36:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-23 22:36:47,798 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:47,798 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:47,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:47,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 22:36:47,999 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:47,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash -550947933, now seen corresponding path program 1 times [2024-10-23 22:36:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565927797] [2024-10-23 22:36:47,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:47,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:36:48,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565927797] [2024-10-23 22:36:48,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565927797] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:48,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622497210] [2024-10-23 22:36:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:48,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:48,889 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:48,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 22:36:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:49,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 5499 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-23 22:36:49,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:36:49,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 22:36:50,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622497210] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:50,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:36:50,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 9] total 16 [2024-10-23 22:36:50,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244913922] [2024-10-23 22:36:50,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:36:50,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:36:50,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:50,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:36:50,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 22:36:50,006 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:50,175 INFO L93 Difference]: Finished difference Result 157 states and 206 transitions. [2024-10-23 22:36:50,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:36:50,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-23 22:36:50,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:50,176 INFO L225 Difference]: With dead ends: 157 [2024-10-23 22:36:50,176 INFO L226 Difference]: Without dead ends: 89 [2024-10-23 22:36:50,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 22:36:50,177 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:50,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:36:50,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-23 22:36:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-23 22:36:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 88 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2024-10-23 22:36:50,182 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 79 [2024-10-23 22:36:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:50,182 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2024-10-23 22:36:50,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:50,182 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2024-10-23 22:36:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-23 22:36:50,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:50,182 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:50,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 22:36:50,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:50,387 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:50,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:50,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1880924804, now seen corresponding path program 1 times [2024-10-23 22:36:50,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:50,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069544829] [2024-10-23 22:36:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:50,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 22:36:51,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:51,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069544829] [2024-10-23 22:36:51,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069544829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:51,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592097273] [2024-10-23 22:36:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:51,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:51,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:51,218 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:51,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 22:36:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:52,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 5502 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 22:36:52,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 22:36:52,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 22:36:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592097273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:52,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:52,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-23 22:36:52,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009484481] [2024-10-23 22:36:52,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:52,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 22:36:52,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:52,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 22:36:52,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-23 22:36:52,432 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:53,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:53,000 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions. [2024-10-23 22:36:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-23 22:36:53,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-23 22:36:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:53,002 INFO L225 Difference]: With dead ends: 177 [2024-10-23 22:36:53,002 INFO L226 Difference]: Without dead ends: 108 [2024-10-23 22:36:53,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-10-23 22:36:53,003 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 45 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:53,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 469 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 22:36:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-23 22:36:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-23 22:36:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.308411214953271) internal successors, (140), 107 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2024-10-23 22:36:53,009 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 80 [2024-10-23 22:36:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:53,009 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2024-10-23 22:36:53,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.588235294117647) internal successors, (95), 17 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2024-10-23 22:36:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-23 22:36:53,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:53,010 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:53,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-23 22:36:53,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 22:36:53,211 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:53,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:53,211 INFO L85 PathProgramCache]: Analyzing trace with hash 213343619, now seen corresponding path program 2 times [2024-10-23 22:36:53,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:53,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446259192] [2024-10-23 22:36:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:53,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 22:36:54,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446259192] [2024-10-23 22:36:54,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446259192] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664959452] [2024-10-23 22:36:54,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:36:54,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:54,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:54,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:54,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 22:36:55,600 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:36:55,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:55,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 5613 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-23 22:36:55,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-10-23 22:36:55,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:36:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-10-23 22:36:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664959452] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:36:55,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:36:55,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 6] total 26 [2024-10-23 22:36:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109507548] [2024-10-23 22:36:55,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:36:55,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-23 22:36:55,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:36:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-23 22:36:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2024-10-23 22:36:55,867 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:36:56,684 INFO L93 Difference]: Finished difference Result 206 states and 272 transitions. [2024-10-23 22:36:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-23 22:36:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-10-23 22:36:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:36:56,686 INFO L225 Difference]: With dead ends: 206 [2024-10-23 22:36:56,686 INFO L226 Difference]: Without dead ends: 115 [2024-10-23 22:36:56,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2024-10-23 22:36:56,687 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 34 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 22:36:56,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 749 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 22:36:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-23 22:36:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-10-23 22:36:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2946428571428572) internal successors, (145), 112 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 145 transitions. [2024-10-23 22:36:56,696 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 145 transitions. Word has length 99 [2024-10-23 22:36:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:36:56,696 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 145 transitions. [2024-10-23 22:36:56,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:36:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 145 transitions. [2024-10-23 22:36:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-23 22:36:56,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:36:56,699 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:36:56,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-23 22:36:56,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:56,900 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:36:56,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:36:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash -774915223, now seen corresponding path program 3 times [2024-10-23 22:36:56,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:36:56,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595815686] [2024-10-23 22:36:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:36:56,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:36:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:36:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-23 22:36:58,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:36:58,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595815686] [2024-10-23 22:36:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595815686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:36:58,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528845699] [2024-10-23 22:36:58,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:36:58,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:36:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:36:58,174 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:36:58,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-23 22:36:59,768 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 22:36:59,768 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:36:59,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-23 22:36:59,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:36:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-23 22:36:59,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:37:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-10-23 22:37:00,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528845699] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:37:00,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:37:00,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 24 [2024-10-23 22:37:00,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786487169] [2024-10-23 22:37:00,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:37:00,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-23 22:37:00,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:00,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-23 22:37:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-10-23 22:37:00,021 INFO L87 Difference]: Start difference. First operand 113 states and 145 transitions. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 22:37:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:00,755 INFO L93 Difference]: Finished difference Result 232 states and 302 transitions. [2024-10-23 22:37:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-23 22:37:00,756 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-10-23 22:37:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:00,756 INFO L225 Difference]: With dead ends: 232 [2024-10-23 22:37:00,756 INFO L226 Difference]: Without dead ends: 139 [2024-10-23 22:37:00,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-10-23 22:37:00,757 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 65 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:00,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 596 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 22:37:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-23 22:37:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2024-10-23 22:37:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 136 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 173 transitions. [2024-10-23 22:37:00,767 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 173 transitions. Word has length 104 [2024-10-23 22:37:00,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:00,767 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 173 transitions. [2024-10-23 22:37:00,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 22:37:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 173 transitions. [2024-10-23 22:37:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-10-23 22:37:00,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:00,768 INFO L215 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:00,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-23 22:37:00,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:00,968 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:00,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1041239427, now seen corresponding path program 4 times [2024-10-23 22:37:00,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:00,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350167991] [2024-10-23 22:37:00,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:00,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-23 22:37:02,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350167991] [2024-10-23 22:37:02,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350167991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:02,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812349904] [2024-10-23 22:37:02,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 22:37:02,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:02,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:02,321 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:02,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-23 22:37:03,411 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 22:37:03,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:37:03,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 5733 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 22:37:03,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:37:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-23 22:37:03,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:37:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2024-10-23 22:37:03,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812349904] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:37:03,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:37:03,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 7] total 25 [2024-10-23 22:37:03,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939341743] [2024-10-23 22:37:03,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:37:03,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-23 22:37:03,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:37:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-23 22:37:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-10-23 22:37:03,661 INFO L87 Difference]: Start difference. First operand 137 states and 173 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:04,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:37:04,359 INFO L93 Difference]: Finished difference Result 208 states and 273 transitions. [2024-10-23 22:37:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-23 22:37:04,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-10-23 22:37:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:37:04,361 INFO L225 Difference]: With dead ends: 208 [2024-10-23 22:37:04,361 INFO L226 Difference]: Without dead ends: 160 [2024-10-23 22:37:04,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2024-10-23 22:37:04,362 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 78 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 22:37:04,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 478 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 22:37:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-23 22:37:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-10-23 22:37:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.2802547770700636) internal successors, (201), 157 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 201 transitions. [2024-10-23 22:37:04,374 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 201 transitions. Word has length 128 [2024-10-23 22:37:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:37:04,374 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 201 transitions. [2024-10-23 22:37:04,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:37:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 201 transitions. [2024-10-23 22:37:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-23 22:37:04,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:37:04,376 INFO L215 NwaCegarLoop]: trace histogram [16, 13, 13, 13, 10, 10, 10, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:37:04,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-23 22:37:04,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:04,576 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:37:04,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:37:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1197000503, now seen corresponding path program 5 times [2024-10-23 22:37:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:37:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067359297] [2024-10-23 22:37:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:37:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:37:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:37:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-10-23 22:37:06,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:37:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067359297] [2024-10-23 22:37:06,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067359297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:37:06,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631613215] [2024-10-23 22:37:06,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 22:37:06,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:37:06,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:37:06,064 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:37:06,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process