./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_79_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_79_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 16d4a22058c6f5b5d64555ff6657c2cc4aa5e57397906f8a84514b3efd0c461d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:07:56,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:07:56,323 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:07:56,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:07:56,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:07:56,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:07:56,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:07:56,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:07:56,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:07:56,343 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:07:56,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:07:56,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:07:56,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:07:56,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:07:56,345 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:07:56,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:07:56,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:07:56,345 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:07:56,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:07:56,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:07:56,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:07:56,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:07:56,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:07:56,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:07:56,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:07:56,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:07:56,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:07:56,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:07:56,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:07:56,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:07:56,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:07:56,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:07:56,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:07:56,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:07:56,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:07:56,354 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:07:56,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:07:56,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:07:56,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:07:56,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:07:56,355 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:07:56,355 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:07:56,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16d4a22058c6f5b5d64555ff6657c2cc4aa5e57397906f8a84514b3efd0c461d [2024-10-14 01:07:56,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:07:56,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:07:56,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:07:56,571 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:07:56,573 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:07:56,574 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_79_safe.c-amalgamation.i [2024-10-14 01:07:57,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:07:58,174 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:07:58,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_79_safe.c-amalgamation.i [2024-10-14 01:07:58,197 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0547c0d6c/623e0b3b229846bf9e87909d1f2068ab/FLAG4462584e6 [2024-10-14 01:07:58,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0547c0d6c/623e0b3b229846bf9e87909d1f2068ab [2024-10-14 01:07:58,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:07:58,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:07:58,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:07:58,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:07:58,219 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:07:58,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:07:58" (1/1) ... [2024-10-14 01:07:58,220 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3311ccd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:58, skipping insertion in model container [2024-10-14 01:07:58,220 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:07:58" (1/1) ... [2024-10-14 01:07:58,281 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:07:58,800 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_79_safe.c-amalgamation.i[63701,63714] [2024-10-14 01:07:58,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:07:59,045 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:07:59,090 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_79_safe.c-amalgamation.i[63701,63714] [2024-10-14 01:07:59,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:07:59,453 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:07:59,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59 WrapperNode [2024-10-14 01:07:59,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:07:59,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:07:59,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:07:59,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:07:59,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,686 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-14 01:07:59,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:07:59,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:07:59,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:07:59,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:07:59,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,821 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 65, 129, 3, 10, 3, 13, 70]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 64, 4096, 64, 128, 2, 4, 0, 0, 64]. The 10 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 4, 2]. [2024-10-14 01:07:59,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,886 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:07:59,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:08:00,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:08:00,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:08:00,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:08:00,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:08:00,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (1/1) ... [2024-10-14 01:08:00,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:08:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:00,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:08:00,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 01:08:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 01:08:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 01:08:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 01:08:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 01:08:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 01:08:00,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:08:00,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 01:08:00,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 01:08:00,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 01:08:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 01:08:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 01:08:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 01:08:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 01:08:00,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 01:08:00,331 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:08:00,333 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:08:05,088 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-14 01:08:05,088 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:08:05,286 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:08:05,289 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-14 01:08:05,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:08:05 BoogieIcfgContainer [2024-10-14 01:08:05,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:08:05,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:08:05,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:08:05,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:08:05,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:07:58" (1/3) ... [2024-10-14 01:08:05,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ec36ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:08:05, skipping insertion in model container [2024-10-14 01:08:05,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:07:59" (2/3) ... [2024-10-14 01:08:05,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ec36ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:08:05, skipping insertion in model container [2024-10-14 01:08:05,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:08:05" (3/3) ... [2024-10-14 01:08:05,296 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_79_safe.c-amalgamation.i [2024-10-14 01:08:05,307 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:08:05,308 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 01:08:05,358 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:08:05,363 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;@614651a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:08:05,364 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 01:08:05,366 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) [2024-10-14 01:08:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:08:05,371 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:05,372 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] [2024-10-14 01:08:05,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:05,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:05,376 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-14 01:08:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774524393] [2024-10-14 01:08:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:05,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:08:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774524393] [2024-10-14 01:08:06,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774524393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:08:06,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:08:06,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:08:06,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058222205] [2024-10-14 01:08:06,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:06,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:08:06,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:08:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:08:06,058 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) [2024-10-14 01:08:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:06,286 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-14 01:08:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:08:06,288 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 [2024-10-14 01:08:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:06,294 INFO L225 Difference]: With dead ends: 89 [2024-10-14 01:08:06,294 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 01:08:06,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:08:06,299 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:06,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:08:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 01:08:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-14 01:08:06,325 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) [2024-10-14 01:08:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-14 01:08:06,328 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-14 01:08:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:06,328 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-14 01:08:06,328 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) [2024-10-14 01:08:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-14 01:08:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:08:06,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:06,329 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] [2024-10-14 01:08:06,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:08:06,330 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:06,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-14 01:08:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:06,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592735926] [2024-10-14 01:08:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:08:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592735926] [2024-10-14 01:08:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592735926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:08:06,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:08:06,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:08:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769903291] [2024-10-14 01:08:06,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:06,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:08:06,878 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) [2024-10-14 01:08:07,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:07,088 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-14 01:08:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:07,088 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 [2024-10-14 01:08:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:07,089 INFO L225 Difference]: With dead ends: 80 [2024-10-14 01:08:07,089 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 01:08:07,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:08:07,091 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:07,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:08:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 01:08:07,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-14 01:08:07,095 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) [2024-10-14 01:08:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-14 01:08:07,096 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-14 01:08:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:07,097 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-14 01:08:07,097 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) [2024-10-14 01:08:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-14 01:08:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:08:07,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:07,098 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] [2024-10-14 01:08:07,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:08:07,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:07,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-14 01:08:07,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:07,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594818827] [2024-10-14 01:08:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:08:07,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:07,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594818827] [2024-10-14 01:08:07,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594818827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:08:07,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:08:07,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:08:07,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543755364] [2024-10-14 01:08:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:07,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:07,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:07,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:07,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:08:07,877 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) [2024-10-14 01:08:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:08,088 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-14 01:08:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:08,088 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 [2024-10-14 01:08:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:08,089 INFO L225 Difference]: With dead ends: 75 [2024-10-14 01:08:08,089 INFO L226 Difference]: Without dead ends: 45 [2024-10-14 01:08:08,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:08:08,090 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:08,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:08:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-14 01:08:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-14 01:08:08,096 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) [2024-10-14 01:08:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-14 01:08:08,101 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-14 01:08:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:08,101 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-14 01:08:08,101 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) [2024-10-14 01:08:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-14 01:08:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 01:08:08,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:08,103 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] [2024-10-14 01:08:08,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:08:08,103 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:08,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-14 01:08:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:08,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235871354] [2024-10-14 01:08:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:08:08,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:08,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235871354] [2024-10-14 01:08:08,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235871354] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:08,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005960015] [2024-10-14 01:08:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:08,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:08,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:08:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:09,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:08:09,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:08:09,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:08:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005960015] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:09,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:08:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371555934] [2024-10-14 01:08:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:09,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:08:09,862 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) [2024-10-14 01:08:10,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:10,100 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-14 01:08:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:10,101 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 [2024-10-14 01:08:10,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:10,101 INFO L225 Difference]: With dead ends: 66 [2024-10-14 01:08:10,102 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 01:08:10,102 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 [2024-10-14 01:08:10,103 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 [2024-10-14 01:08:10,104 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] [2024-10-14 01:08:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 01:08:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 01:08:10,107 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) [2024-10-14 01:08:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-14 01:08:10,107 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-14 01:08:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:10,108 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-14 01:08:10,108 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) [2024-10-14 01:08:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-14 01:08:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-14 01:08:10,109 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:10,109 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] [2024-10-14 01:08:10,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 01:08:10,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:10,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:10,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-14 01:08:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:10,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519034888] [2024-10-14 01:08:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:08:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519034888] [2024-10-14 01:08:11,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519034888] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70816575] [2024-10-14 01:08:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:11,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:11,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:11,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:08:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:12,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:08:12,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:08:12,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:08:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70816575] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:12,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:12,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:08:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040386290] [2024-10-14 01:08:12,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:12,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:08:12,123 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) [2024-10-14 01:08:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:12,301 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-14 01:08:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:12,301 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 [2024-10-14 01:08:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:12,302 INFO L225 Difference]: With dead ends: 57 [2024-10-14 01:08:12,302 INFO L226 Difference]: Without dead ends: 47 [2024-10-14 01:08:12,302 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 [2024-10-14 01:08:12,303 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 [2024-10-14 01:08:12,303 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] [2024-10-14 01:08:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-14 01:08:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-14 01:08:12,310 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) [2024-10-14 01:08:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-14 01:08:12,310 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-14 01:08:12,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:12,310 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-14 01:08:12,310 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) [2024-10-14 01:08:12,310 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-14 01:08:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 01:08:12,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:12,311 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] [2024-10-14 01:08:12,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 01:08:12,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:12,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:12,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:12,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-14 01:08:12,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:12,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503265177] [2024-10-14 01:08:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:12,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:08:13,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503265177] [2024-10-14 01:08:13,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503265177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169449537] [2024-10-14 01:08:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:13,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:13,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:13,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:08:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:14,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:08:14,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:08:14,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:08:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169449537] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:08:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112558590] [2024-10-14 01:08:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:14,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:08:14,111 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) [2024-10-14 01:08:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:14,295 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-14 01:08:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:14,296 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 [2024-10-14 01:08:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:14,296 INFO L225 Difference]: With dead ends: 74 [2024-10-14 01:08:14,297 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 01:08:14,297 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 [2024-10-14 01:08:14,298 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 [2024-10-14 01:08:14,298 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] [2024-10-14 01:08:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 01:08:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-14 01:08:14,302 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) [2024-10-14 01:08:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-14 01:08:14,303 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-14 01:08:14,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:14,303 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-14 01:08:14,304 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) [2024-10-14 01:08:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-14 01:08:14,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 01:08:14,304 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:14,304 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] [2024-10-14 01:08:14,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 01:08:14,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:14,507 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:14,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-14 01:08:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:14,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117042381] [2024-10-14 01:08:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:08:15,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117042381] [2024-10-14 01:08:15,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117042381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:15,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477753491] [2024-10-14 01:08:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:15,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:15,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:15,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:15,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:08:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:15,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:08:15,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:08:15,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:08:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477753491] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:08:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109769407] [2024-10-14 01:08:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:15,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:15,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:15,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:08:15,945 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) [2024-10-14 01:08:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:16,112 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-14 01:08:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:16,112 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 [2024-10-14 01:08:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:16,113 INFO L225 Difference]: With dead ends: 64 [2024-10-14 01:08:16,113 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 01:08:16,113 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 [2024-10-14 01:08:16,113 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:16,114 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] [2024-10-14 01:08:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 01:08:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-14 01:08:16,117 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) [2024-10-14 01:08:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-14 01:08:16,117 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-14 01:08:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:16,117 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-14 01:08:16,118 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) [2024-10-14 01:08:16,118 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-14 01:08:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 01:08:16,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:16,118 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] [2024-10-14 01:08:16,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 01:08:16,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:16,319 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:16,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-14 01:08:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411137707] [2024-10-14 01:08:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:08:17,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:17,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411137707] [2024-10-14 01:08:17,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411137707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:17,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572404210] [2024-10-14 01:08:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:17,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:17,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:17,147 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:17,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 01:08:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:18,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:08:18,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:08:18,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:08:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572404210] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:08:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222051353] [2024-10-14 01:08:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:18,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:08:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:08:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:08:18,227 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) [2024-10-14 01:08:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:18,395 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-14 01:08:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:08:18,396 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 [2024-10-14 01:08:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:18,399 INFO L225 Difference]: With dead ends: 54 [2024-10-14 01:08:18,399 INFO L226 Difference]: Without dead ends: 50 [2024-10-14 01:08:18,399 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 [2024-10-14 01:08:18,400 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:18,400 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] [2024-10-14 01:08:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-14 01:08:18,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-14 01:08:18,407 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) [2024-10-14 01:08:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-14 01:08:18,407 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-14 01:08:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:18,407 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-14 01:08:18,407 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) [2024-10-14 01:08:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-14 01:08:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 01:08:18,408 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:18,412 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] [2024-10-14 01:08:18,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 01:08:18,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:18,614 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:18,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-14 01:08:18,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:18,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785828420] [2024-10-14 01:08:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:18,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:08:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785828420] [2024-10-14 01:08:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785828420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:19,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546491610] [2024-10-14 01:08:19,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:19,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:19,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:19,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:19,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 01:08:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:20,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-14 01:08:20,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:08:20,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:08:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546491610] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:20,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-14 01:08:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72039335] [2024-10-14 01:08:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:20,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:08:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:08:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:08:20,385 INFO L87 Difference]: Start difference. First operand 50 states and 66 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) [2024-10-14 01:08:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:20,557 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-10-14 01:08:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:08:20,557 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 43 [2024-10-14 01:08:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:20,558 INFO L225 Difference]: With dead ends: 84 [2024-10-14 01:08:20,558 INFO L226 Difference]: Without dead ends: 51 [2024-10-14 01:08:20,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:08:20,561 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-14 01:08:20,562 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] [2024-10-14 01:08:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-14 01:08:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-14 01:08:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:20,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-14 01:08:20,565 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 43 [2024-10-14 01:08:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:20,565 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-14 01:08:20,565 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) [2024-10-14 01:08:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-14 01:08:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 01:08:20,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:20,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:20,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 01:08:20,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:20,768 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:20,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1912228973, now seen corresponding path program 1 times [2024-10-14 01:08:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450599116] [2024-10-14 01:08:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:08:21,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:21,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450599116] [2024-10-14 01:08:21,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450599116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:21,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254315432] [2024-10-14 01:08:21,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:21,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:21,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:21,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:21,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 01:08:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:22,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 5307 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:08:22,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:08:22,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:08:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254315432] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:22,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-14 01:08:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573409215] [2024-10-14 01:08:22,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:22,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:08:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:08:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:08:22,337 INFO L87 Difference]: Start difference. First operand 51 states and 67 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) [2024-10-14 01:08:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:22,531 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2024-10-14 01:08:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:08:22,531 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 46 [2024-10-14 01:08:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:22,532 INFO L225 Difference]: With dead ends: 73 [2024-10-14 01:08:22,532 INFO L226 Difference]: Without dead ends: 52 [2024-10-14 01:08:22,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:08:22,533 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 [2024-10-14 01:08:22,533 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] [2024-10-14 01:08:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-14 01:08:22,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-10-14 01:08:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 68 transitions. [2024-10-14 01:08:22,536 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 68 transitions. Word has length 46 [2024-10-14 01:08:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:22,537 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 68 transitions. [2024-10-14 01:08:22,537 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) [2024-10-14 01:08:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 68 transitions. [2024-10-14 01:08:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-14 01:08:22,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:22,537 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:22,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 01:08:22,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:22,742 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:22,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1455903148, now seen corresponding path program 1 times [2024-10-14 01:08:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:22,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184172542] [2024-10-14 01:08:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 01:08:23,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184172542] [2024-10-14 01:08:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184172542] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843330457] [2024-10-14 01:08:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:23,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:23,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:23,313 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:23,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 01:08:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:24,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 5321 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:08:24,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:08:24,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:08:24,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843330457] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:24,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:24,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 6] total 10 [2024-10-14 01:08:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516427830] [2024-10-14 01:08:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:24,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:08:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:08:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:08:24,232 INFO L87 Difference]: Start difference. First operand 52 states and 68 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) [2024-10-14 01:08:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:24,420 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2024-10-14 01:08:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:08:24,420 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 49 [2024-10-14 01:08:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:24,421 INFO L225 Difference]: With dead ends: 75 [2024-10-14 01:08:24,421 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 01:08:24,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:08:24,425 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:24,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:08:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 01:08:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-14 01:08:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2024-10-14 01:08:24,432 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 49 [2024-10-14 01:08:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:24,433 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2024-10-14 01:08:24,433 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) [2024-10-14 01:08:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2024-10-14 01:08:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 01:08:24,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:24,433 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:24,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-14 01:08:24,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 01:08:24,634 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:24,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash -281320841, now seen corresponding path program 1 times [2024-10-14 01:08:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:24,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679705547] [2024-10-14 01:08:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:24,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 01:08:25,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:25,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679705547] [2024-10-14 01:08:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679705547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34947705] [2024-10-14 01:08:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:25,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:25,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:25,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 01:08:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:26,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 5324 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:08:26,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-14 01:08:26,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-14 01:08:26,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34947705] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:08:26,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:08:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-14 01:08:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745101814] [2024-10-14 01:08:26,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:08:26,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 01:08:26,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 01:08:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:08:26,170 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:26,623 INFO L93 Difference]: Finished difference Result 101 states and 136 transitions. [2024-10-14 01:08:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 01:08:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-14 01:08:26,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:26,624 INFO L225 Difference]: With dead ends: 101 [2024-10-14 01:08:26,624 INFO L226 Difference]: Without dead ends: 63 [2024-10-14 01:08:26,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 01:08:26,625 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:26,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:08:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-14 01:08:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-14 01:08:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-10-14 01:08:26,630 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 50 [2024-10-14 01:08:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:26,630 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-10-14 01:08:26,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-10-14 01:08:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-14 01:08:26,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:26,631 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, 1, 1, 1, 1] [2024-10-14 01:08:26,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 01:08:26,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:26,832 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:26,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash 446001259, now seen corresponding path program 2 times [2024-10-14 01:08:26,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:26,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584306478] [2024-10-14 01:08:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:08:27,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584306478] [2024-10-14 01:08:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584306478] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613559077] [2024-10-14 01:08:27,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:08:27,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:27,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:27,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:27,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 01:08:28,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:08:28,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:08:28,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 5389 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 01:08:28,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:08:28,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 01:08:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613559077] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-10-14 01:08:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903606479] [2024-10-14 01:08:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:28,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:08:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:08:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:08:28,416 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:28,620 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2024-10-14 01:08:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:08:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-10-14 01:08:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:28,621 INFO L225 Difference]: With dead ends: 73 [2024-10-14 01:08:28,621 INFO L226 Difference]: Without dead ends: 64 [2024-10-14 01:08:28,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:08:28,621 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-10-14 01:08:28,621 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] [2024-10-14 01:08:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-14 01:08:28,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-14 01:08:28,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 83 transitions. [2024-10-14 01:08:28,634 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 83 transitions. Word has length 60 [2024-10-14 01:08:28,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:28,635 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 83 transitions. [2024-10-14 01:08:28,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 83 transitions. [2024-10-14 01:08:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 01:08:28,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:28,635 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:28,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 01:08:28,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 01:08:28,836 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:28,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:28,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1995370305, now seen corresponding path program 1 times [2024-10-14 01:08:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:28,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572346473] [2024-10-14 01:08:28,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:28,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 01:08:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572346473] [2024-10-14 01:08:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572346473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410493803] [2024-10-14 01:08:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:29,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:29,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:29,442 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:08:29,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 01:08:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:30,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 5403 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:08:30,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:08:30,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 01:08:30,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410493803] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:30,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:08:30,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 11 [2024-10-14 01:08:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787480593] [2024-10-14 01:08:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:08:30,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:08:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:08:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:08:30,579 INFO L87 Difference]: Start difference. First operand 64 states and 83 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:30,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:30,818 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2024-10-14 01:08:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:08:30,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 63 [2024-10-14 01:08:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:30,820 INFO L225 Difference]: With dead ends: 75 [2024-10-14 01:08:30,820 INFO L226 Difference]: Without dead ends: 65 [2024-10-14 01:08:30,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:08:30,821 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:30,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:08:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-14 01:08:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-14 01:08:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2024-10-14 01:08:30,827 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 63 [2024-10-14 01:08:30,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:30,828 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2024-10-14 01:08:30,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2024-10-14 01:08:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-14 01:08:30,829 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:30,829 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:30,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 01:08:31,030 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 [2024-10-14 01:08:31,030 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:31,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash -917582850, now seen corresponding path program 1 times [2024-10-14 01:08:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357432612] [2024-10-14 01:08:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:31,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 01:08:31,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357432612] [2024-10-14 01:08:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357432612] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789871427] [2024-10-14 01:08:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:31,826 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) [2024-10-14 01:08:31,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 01:08:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:32,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 5406 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 01:08:32,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 01:08:32,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-14 01:08:32,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789871427] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:08:32,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:08:32,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 12 [2024-10-14 01:08:32,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104016633] [2024-10-14 01:08:32,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:08:32,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 01:08:32,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:32,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 01:08:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:08:32,825 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:33,256 INFO L93 Difference]: Finished difference Result 119 states and 157 transitions. [2024-10-14 01:08:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 01:08:33,257 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 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 64 [2024-10-14 01:08:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:33,257 INFO L225 Difference]: With dead ends: 119 [2024-10-14 01:08:33,257 INFO L226 Difference]: Without dead ends: 70 [2024-10-14 01:08:33,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-10-14 01:08:33,258 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:33,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 367 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:08:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-14 01:08:33,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-10-14 01:08:33,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 69 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2024-10-14 01:08:33,262 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 64 [2024-10-14 01:08:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:33,262 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2024-10-14 01:08:33,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2024-10-14 01:08:33,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 01:08:33,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:33,263 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:33,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 01:08:33,463 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 [2024-10-14 01:08:33,464 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:33,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1396747903, now seen corresponding path program 1 times [2024-10-14 01:08:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079592091] [2024-10-14 01:08:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:33,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 01:08:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079592091] [2024-10-14 01:08:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079592091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45469670] [2024-10-14 01:08:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:34,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:34,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:34,116 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) [2024-10-14 01:08:34,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 01:08:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:35,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 5438 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:08:35,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-14 01:08:35,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 01:08:35,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45469670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:08:35,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:08:35,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2024-10-14 01:08:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101853090] [2024-10-14 01:08:35,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:08:35,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 01:08:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 01:08:35,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:08:35,084 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:35,461 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2024-10-14 01:08:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 01:08:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-14 01:08:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:35,461 INFO L225 Difference]: With dead ends: 133 [2024-10-14 01:08:35,461 INFO L226 Difference]: Without dead ends: 80 [2024-10-14 01:08:35,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-14 01:08:35,462 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:35,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 306 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 01:08:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-14 01:08:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-14 01:08:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2024-10-14 01:08:35,469 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 69 [2024-10-14 01:08:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:35,470 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2024-10-14 01:08:35,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2024-10-14 01:08:35,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-14 01:08:35,471 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:35,472 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:35,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 01:08:35,676 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 [2024-10-14 01:08:35,676 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:35,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash 297711965, now seen corresponding path program 2 times [2024-10-14 01:08:35,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:35,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826710310] [2024-10-14 01:08:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:35,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 01:08:36,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:36,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826710310] [2024-10-14 01:08:36,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826710310] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:36,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819641411] [2024-10-14 01:08:36,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:08:36,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:36,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:36,538 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) [2024-10-14 01:08:36,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 01:08:37,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:08:37,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:08:37,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 5503 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 01:08:37,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 01:08:37,571 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 01:08:37,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819641411] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:08:37,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:08:37,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-14 01:08:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899195793] [2024-10-14 01:08:37,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:08:37,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 01:08:37,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:37,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 01:08:37,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:08:37,670 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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) [2024-10-14 01:08:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:38,300 INFO L93 Difference]: Finished difference Result 139 states and 187 transitions. [2024-10-14 01:08:38,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:08:38,300 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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) Word has length 79 [2024-10-14 01:08:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:38,301 INFO L225 Difference]: With dead ends: 139 [2024-10-14 01:08:38,301 INFO L226 Difference]: Without dead ends: 103 [2024-10-14 01:08:38,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:08:38,301 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:38,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 519 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 01:08:38,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-14 01:08:38,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-14 01:08:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.31) internal successors, (131), 100 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) [2024-10-14 01:08:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2024-10-14 01:08:38,306 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 79 [2024-10-14 01:08:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:38,307 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2024-10-14 01:08:38,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 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) [2024-10-14 01:08:38,307 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2024-10-14 01:08:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-14 01:08:38,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:38,307 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:08:38,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-14 01:08:38,511 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 [2024-10-14 01:08:38,511 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:38,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash -152255511, now seen corresponding path program 3 times [2024-10-14 01:08:38,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330509952] [2024-10-14 01:08:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-14 01:08:39,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330509952] [2024-10-14 01:08:39,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330509952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:39,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868770650] [2024-10-14 01:08:39,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:08:39,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:39,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:39,553 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) [2024-10-14 01:08:39,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 01:08:40,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 01:08:40,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:08:40,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 01:08:40,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-10-14 01:08:40,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-10-14 01:08:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868770650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:08:40,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:08:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 20 [2024-10-14 01:08:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009719392] [2024-10-14 01:08:40,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:08:40,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 01:08:40,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 01:08:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-10-14 01:08:40,957 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 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) [2024-10-14 01:08:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:41,552 INFO L93 Difference]: Finished difference Result 178 states and 235 transitions. [2024-10-14 01:08:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 01:08:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-14 01:08:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:41,554 INFO L225 Difference]: With dead ends: 178 [2024-10-14 01:08:41,554 INFO L226 Difference]: Without dead ends: 124 [2024-10-14 01:08:41,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-10-14 01:08:41,555 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 40 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:41,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 533 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 01:08:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-14 01:08:41,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2024-10-14 01:08:41,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 115 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:41,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 151 transitions. [2024-10-14 01:08:41,562 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 151 transitions. Word has length 100 [2024-10-14 01:08:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:41,562 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 151 transitions. [2024-10-14 01:08:41,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 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) [2024-10-14 01:08:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 151 transitions. [2024-10-14 01:08:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-14 01:08:41,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:41,564 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 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] [2024-10-14 01:08:41,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 01:08:41,764 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 [2024-10-14 01:08:41,765 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:41,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 439354096, now seen corresponding path program 4 times [2024-10-14 01:08:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:41,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703884201] [2024-10-14 01:08:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:08:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703884201] [2024-10-14 01:08:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703884201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883004107] [2024-10-14 01:08:42,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 01:08:42,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:42,693 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) [2024-10-14 01:08:42,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 01:08:43,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 01:08:43,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:08:43,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-14 01:08:43,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:08:43,752 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:08:43,752 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:08:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 66 proven. 140 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 01:08:44,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883004107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:08:44,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:08:44,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 18] total 27 [2024-10-14 01:08:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791443175] [2024-10-14 01:08:44,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:08:44,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-14 01:08:44,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:08:44,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-14 01:08:44,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-10-14 01:08:44,123 INFO L87 Difference]: Start difference. First operand 116 states and 151 transitions. Second operand has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:08:45,352 INFO L93 Difference]: Finished difference Result 209 states and 282 transitions. [2024-10-14 01:08:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:08:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-10-14 01:08:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:08:45,353 INFO L225 Difference]: With dead ends: 209 [2024-10-14 01:08:45,353 INFO L226 Difference]: Without dead ends: 143 [2024-10-14 01:08:45,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 01:08:45,354 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 84 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:08:45,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 787 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 01:08:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-14 01:08:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-10-14 01:08:45,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3169014084507042) internal successors, (187), 142 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 187 transitions. [2024-10-14 01:08:45,363 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 187 transitions. Word has length 107 [2024-10-14 01:08:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:08:45,363 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 187 transitions. [2024-10-14 01:08:45,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.481481481481482) internal successors, (121), 27 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:08:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 187 transitions. [2024-10-14 01:08:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-10-14 01:08:45,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:08:45,364 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 10, 10, 10, 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] [2024-10-14 01:08:45,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-14 01:08:45,565 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 [2024-10-14 01:08:45,565 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:08:45,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:08:45,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1202936316, now seen corresponding path program 5 times [2024-10-14 01:08:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:08:45,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91962372] [2024-10-14 01:08:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:08:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:08:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:08:47,082 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:08:47,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:08:47,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91962372] [2024-10-14 01:08:47,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91962372] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:08:47,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872537105] [2024-10-14 01:08:47,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 01:08:47,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:08:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:08:47,087 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) [2024-10-14 01:08:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process