./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_78_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_78_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 782c347c3c04902c8bf1dd304b7422e58bfbfb606e5f7d1dfade6531968aae72 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:42:41,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:42:41,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:42:41,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:42:41,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:42:41,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:42:41,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:42:41,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:42:41,172 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:42:41,173 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:42:41,174 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:42:41,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:42:41,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:42:41,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:42:41,176 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:42:41,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:42:41,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:42:41,177 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:42:41,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:42:41,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:42:41,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:42:41,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:42:41,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:42:41,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:42:41,180 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:42:41,180 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:42:41,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:42:41,180 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:42:41,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:42:41,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:42:41,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:42:41,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:42:41,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:42:41,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:42:41,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:42:41,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:42:41,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:42:41,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:42:41,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:42:41,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:42:41,182 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:42:41,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:42:41,184 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782c347c3c04902c8bf1dd304b7422e58bfbfb606e5f7d1dfade6531968aae72 [2024-10-23 22:42:41,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:42:41,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:42:41,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:42:41,420 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:42:41,421 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:42:41,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_78_safe.c-amalgamation.i [2024-10-23 22:42:42,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:42:42,955 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:42:42,956 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_78_safe.c-amalgamation.i [2024-10-23 22:42:42,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184d617a3/f2dcc5ad5c164da9b72647f67fbe8860/FLAGea99796f0 [2024-10-23 22:42:42,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184d617a3/f2dcc5ad5c164da9b72647f67fbe8860 [2024-10-23 22:42:43,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:42:43,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:42:43,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:42:43,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:42:43,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:42:43,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:42:42" (1/1) ... [2024-10-23 22:42:43,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e232bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:43, skipping insertion in model container [2024-10-23 22:42:43,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:42:42" (1/1) ... [2024-10-23 22:42:43,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:42:43,582 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_78_safe.c-amalgamation.i[63707,63720] [2024-10-23 22:42:43,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:42:43,894 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:42:43,928 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_78_safe.c-amalgamation.i[63707,63720] [2024-10-23 22:42:44,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:42:44,220 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:42:44,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44 WrapperNode [2024-10-23 22:42:44,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:42:44,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:42:44,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:42:44,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:42:44,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,497 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-23 22:42:44,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:42:44,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:42:44,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:42:44,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:42:44,507 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,586 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [13, 2, 7, 257, 3, 65, 4097, 65, 129, 3, 10, 70]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [0, 2, 7, 256, 0, 64, 4096, 64, 128, 2, 4, 64]. The 10 writes are split as follows [4, 0, 0, 0, 1, 0, 0, 0, 0, 0, 3, 2]. [2024-10-23 22:42:44,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:42:44,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:42:44,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:42:44,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:42:44,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (1/1) ... [2024-10-23 22:42:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:42:44,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:42:44,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 22:42:44,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 22:42:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:42:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:42:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 22:42:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 22:42:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 22:42:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:42:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:42:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 22:42:44,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 22:42:44,944 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:42:44,945 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:42:49,342 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-23 22:42:49,343 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:42:49,655 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:42:49,655 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 22:42:49,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:42:49 BoogieIcfgContainer [2024-10-23 22:42:49,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:42:49,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:42:49,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:42:49,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:42:49,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:42:42" (1/3) ... [2024-10-23 22:42:49,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0302dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:42:49, skipping insertion in model container [2024-10-23 22:42:49,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:42:44" (2/3) ... [2024-10-23 22:42:49,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0302dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:42:49, skipping insertion in model container [2024-10-23 22:42:49,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:42:49" (3/3) ... [2024-10-23 22:42:49,661 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_78_safe.c-amalgamation.i [2024-10-23 22:42:49,673 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:42:49,673 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:42:49,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:42:49,741 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;@3f14de1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:42:49,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:42:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:42:49,749 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:49,750 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:49,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:49,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:49,754 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-23 22:42:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633639892] [2024-10-23 22:42:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:42:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633639892] [2024-10-23 22:42:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633639892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:42:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:42:50,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:42:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780603090] [2024-10-23 22:42:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:50,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:42:50,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:50,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:42:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:42:50,494 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:50,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:42:50,721 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-23 22:42:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:42:50,724 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-23 22:42:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:42:50,729 INFO L225 Difference]: With dead ends: 89 [2024-10-23 22:42:50,729 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:42:50,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:42:50,733 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 [2024-10-23 22:42:50,734 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] [2024-10-23 22:42:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:42:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:42:50,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-23 22:42:50,756 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-23 22:42:50,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:42:50,757 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-23 22:42:50,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-23 22:42:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:42:50,758 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:50,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:50,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:42:50,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:50,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-23 22:42:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:50,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151082426] [2024-10-23 22:42:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:42:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151082426] [2024-10-23 22:42:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151082426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:42:51,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:42:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:42:51,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270450262] [2024-10-23 22:42:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:51,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:42:51,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:51,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:42:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:42:51,299 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:42:51,504 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-23 22:42:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:42:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-23 22:42:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:42:51,506 INFO L225 Difference]: With dead ends: 80 [2024-10-23 22:42:51,507 INFO L226 Difference]: Without dead ends: 44 [2024-10-23 22:42:51,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:42:51,508 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 [2024-10-23 22:42:51,509 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] [2024-10-23 22:42:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-23 22:42:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-23 22:42:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-23 22:42:51,516 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-23 22:42:51,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:42:51,516 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-23 22:42:51,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-23 22:42:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-23 22:42:51,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:51,519 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:51,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:42:51,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:51,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-23 22:42:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:51,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097834374] [2024-10-23 22:42:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:42:52,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:52,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097834374] [2024-10-23 22:42:52,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097834374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:42:52,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:42:52,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 22:42:52,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278990628] [2024-10-23 22:42:52,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:52,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:42:52,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:52,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:42:52,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:42:52,150 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:52,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:42:52,321 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-23 22:42:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:42:52,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-23 22:42:52,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:42:52,322 INFO L225 Difference]: With dead ends: 75 [2024-10-23 22:42:52,322 INFO L226 Difference]: Without dead ends: 45 [2024-10-23 22:42:52,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:42:52,323 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-10-23 22:42:52,323 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] [2024-10-23 22:42:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-23 22:42:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-23 22:42:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-23 22:42:52,331 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-23 22:42:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:42:52,332 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-23 22:42:52,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:52,332 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-23 22:42:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-23 22:42:52,332 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:52,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:52,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 22:42:52,333 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:52,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-23 22:42:52,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:52,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712168019] [2024-10-23 22:42:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:52,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:42:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712168019] [2024-10-23 22:42:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712168019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499193392] [2024-10-23 22:42:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:53,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:53,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:42:53,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:42:53,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 22:42:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:54,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:42:54,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:42:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:42:54,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:42:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:42:54,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499193392] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:54,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:42:54,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:42:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395778339] [2024-10-23 22:42:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:54,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:42:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:42:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:42:54,161 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:54,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:42:54,353 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-23 22:42:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:42:54,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-23 22:42:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:42:54,354 INFO L225 Difference]: With dead ends: 66 [2024-10-23 22:42:54,354 INFO L226 Difference]: Without dead ends: 46 [2024-10-23 22:42:54,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:42:54,355 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:42:54,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:42:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-23 22:42:54,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-23 22:42:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-23 22:42:54,360 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-23 22:42:54,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:42:54,360 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-23 22:42:54,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-23 22:42:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-23 22:42:54,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:54,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:54,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 22:42:54,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:54,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:54,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:54,563 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-23 22:42:54,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:54,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978554637] [2024-10-23 22:42:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:54,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:42:55,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978554637] [2024-10-23 22:42:55,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978554637] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:55,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104045078] [2024-10-23 22:42:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:55,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:55,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:42:55,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:42:55,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 22:42:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:56,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 22:42:56,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:42:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 22:42:56,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:42:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:42:56,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104045078] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:56,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:42:56,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:42:56,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993512172] [2024-10-23 22:42:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:56,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:42:56,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:56,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:42:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:42:56,209 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:56,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:42:56,381 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-23 22:42:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:42:56,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-23 22:42:56,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:42:56,382 INFO L225 Difference]: With dead ends: 57 [2024-10-23 22:42:56,382 INFO L226 Difference]: Without dead ends: 47 [2024-10-23 22:42:56,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:42:56,383 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:42:56,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:42:56,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-23 22:42:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-23 22:42:56,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:56,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-23 22:42:56,387 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-23 22:42:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:42:56,387 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-23 22:42:56,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-23 22:42:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-23 22:42:56,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:56,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:56,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 22:42:56,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:56,592 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:56,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-23 22:42:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108425918] [2024-10-23 22:42:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:42:57,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108425918] [2024-10-23 22:42:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108425918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:57,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553597939] [2024-10-23 22:42:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:57,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:57,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:42:57,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:42:57,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 22:42:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:58,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:42:58,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:42:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 22:42:58,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:42:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:42:58,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553597939] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:58,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:42:58,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 22:42:58,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053834536] [2024-10-23 22:42:58,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:58,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:42:58,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:42:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:42:58,080 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:58,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:42:58,271 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-23 22:42:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:42:58,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-23 22:42:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:42:58,272 INFO L225 Difference]: With dead ends: 74 [2024-10-23 22:42:58,273 INFO L226 Difference]: Without dead ends: 48 [2024-10-23 22:42:58,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:42:58,274 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:42:58,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:42:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-23 22:42:58,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-23 22:42:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-23 22:42:58,284 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-23 22:42:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:42:58,284 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-23 22:42:58,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:42:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-23 22:42:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-23 22:42:58,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:42:58,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:42:58,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-23 22:42:58,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:58,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:42:58,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:42:58,486 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-23 22:42:58,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:42:58,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31370651] [2024-10-23 22:42:58,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:58,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:42:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:42:59,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:42:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31370651] [2024-10-23 22:42:59,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31370651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:59,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867834292] [2024-10-23 22:42:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:42:59,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:42:59,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:42:59,063 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) [2024-10-23 22:42:59,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 22:42:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:42:59,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:42:59,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:42:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 22:42:59,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:42:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:42:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867834292] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:42:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:42:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:42:59,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363467003] [2024-10-23 22:42:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:42:59,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:42:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:42:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:42:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:42:59,951 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:00,124 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-23 22:43:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:43:00,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-23 22:43:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:00,125 INFO L225 Difference]: With dead ends: 64 [2024-10-23 22:43:00,125 INFO L226 Difference]: Without dead ends: 49 [2024-10-23 22:43:00,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:43:00,125 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:00,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:43:00,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-23 22:43:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-23 22:43:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:00,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-23 22:43:00,129 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-23 22:43:00,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:00,129 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-23 22:43:00,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:00,130 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-23 22:43:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 22:43:00,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:00,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:00,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 22:43:00,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:00,331 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:00,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:00,332 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-23 22:43:00,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:00,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240716258] [2024-10-23 22:43:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:43:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240716258] [2024-10-23 22:43:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240716258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966303747] [2024-10-23 22:43:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:01,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:01,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:01,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 22:43:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:02,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:43:02,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:43:02,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:02,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:43:02,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966303747] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:02,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:43:02,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 22:43:02,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277242805] [2024-10-23 22:43:02,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:43:02,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:43:02,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:43:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:43:02,215 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:02,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:02,393 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-23 22:43:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:43:02,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-23 22:43:02,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:02,396 INFO L225 Difference]: With dead ends: 54 [2024-10-23 22:43:02,396 INFO L226 Difference]: Without dead ends: 50 [2024-10-23 22:43:02,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:43:02,397 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:02,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:43:02,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-23 22:43:02,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-23 22:43:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-23 22:43:02,404 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-23 22:43:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:02,404 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-23 22:43:02,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:02,406 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-23 22:43:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 22:43:02,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:02,407 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:02,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-23 22:43:02,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:02,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:02,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-23 22:43:02,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:02,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094733284] [2024-10-23 22:43:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:43:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094733284] [2024-10-23 22:43:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094733284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104959873] [2024-10-23 22:43:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:03,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:03,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:03,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:03,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 22:43:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:04,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-23 22:43:04,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 22:43:04,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:43:04,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104959873] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:04,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:43:04,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2024-10-23 22:43:04,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338151607] [2024-10-23 22:43:04,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:43:04,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:43:04,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:43:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:43:04,634 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) [2024-10-23 22:43:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:04,825 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2024-10-23 22:43:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:43:04,825 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 [2024-10-23 22:43:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:04,826 INFO L225 Difference]: With dead ends: 60 [2024-10-23 22:43:04,826 INFO L226 Difference]: Without dead ends: 51 [2024-10-23 22:43:04,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:43:04,827 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 [2024-10-23 22:43:04,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:43:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-23 22:43:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-23 22:43:04,830 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) [2024-10-23 22:43:04,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-23 22:43:04,831 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 43 [2024-10-23 22:43:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:04,831 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-23 22:43:04,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-23 22:43:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 22:43:04,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:04,832 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:04,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 22:43:05,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:05,036 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:05,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1175858717, now seen corresponding path program 1 times [2024-10-23 22:43:05,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:05,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087675006] [2024-10-23 22:43:05,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:05,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 22:43:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087675006] [2024-10-23 22:43:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087675006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:05,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344506789] [2024-10-23 22:43:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:05,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:05,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:05,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:05,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 22:43:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:06,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 5307 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 22:43:06,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 22:43:06,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-23 22:43:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344506789] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:06,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:06,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 22:43:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122037422] [2024-10-23 22:43:06,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:06,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 22:43:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:06,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 22:43:06,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:43:06,512 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:06,798 INFO L93 Difference]: Finished difference Result 97 states and 132 transitions. [2024-10-23 22:43:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 22:43:06,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) Word has length 46 [2024-10-23 22:43:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:06,799 INFO L225 Difference]: With dead ends: 97 [2024-10-23 22:43:06,799 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 22:43:06,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:43:06,800 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:06,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:43:06,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 22:43:06,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 22:43:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-23 22:43:06,804 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 46 [2024-10-23 22:43:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:06,805 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-23 22:43:06,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-23 22:43:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-23 22:43:06,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:06,806 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:06,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-23 22:43:07,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:07,011 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:07,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 2 times [2024-10-23 22:43:07,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:07,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224824829] [2024-10-23 22:43:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:07,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 22:43:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224824829] [2024-10-23 22:43:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224824829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:07,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123513575] [2024-10-23 22:43:07,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:43:07,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:07,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:07,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 22:43:08,491 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:43:08,491 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:43:08,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:43:08,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 22:43:08,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-23 22:43:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123513575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:08,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:08,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 22:43:08,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685438036] [2024-10-23 22:43:08,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:08,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 22:43:08,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 22:43:08,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:43:08,587 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:09,003 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-23 22:43:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 22:43:09,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-23 22:43:09,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:09,004 INFO L225 Difference]: With dead ends: 116 [2024-10-23 22:43:09,004 INFO L226 Difference]: Without dead ends: 71 [2024-10-23 22:43:09,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-23 22:43:09,005 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:09,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 230 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:43:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-23 22:43:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-23 22:43:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-23 22:43:09,013 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-23 22:43:09,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:09,015 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-23 22:43:09,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-23 22:43:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-23 22:43:09,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:09,016 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:09,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 22:43:09,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 22:43:09,219 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:09,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:09,220 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 3 times [2024-10-23 22:43:09,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:09,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110750495] [2024-10-23 22:43:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:09,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-23 22:43:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110750495] [2024-10-23 22:43:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110750495] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907338831] [2024-10-23 22:43:09,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:43:09,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:09,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:09,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:09,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 22:43:10,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 22:43:10,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:43:11,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-23 22:43:11,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 22:43:11,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 22:43:11,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907338831] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:11,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:43:11,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 10 [2024-10-23 22:43:11,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523481497] [2024-10-23 22:43:11,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:43:11,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:43:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:11,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:43:11,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-23 22:43:11,078 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:11,258 INFO L93 Difference]: Finished difference Result 103 states and 136 transitions. [2024-10-23 22:43:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:43:11,259 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 66 [2024-10-23 22:43:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:11,259 INFO L225 Difference]: With dead ends: 103 [2024-10-23 22:43:11,259 INFO L226 Difference]: Without dead ends: 72 [2024-10-23 22:43:11,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-23 22:43:11,260 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 [2024-10-23 22:43:11,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:43:11,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-23 22:43:11,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-23 22:43:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 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) [2024-10-23 22:43:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-10-23 22:43:11,264 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 66 [2024-10-23 22:43:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:11,265 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-10-23 22:43:11,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-10-23 22:43:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-23 22:43:11,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:11,266 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:11,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-23 22:43:11,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:11,469 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:11,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash 52370250, now seen corresponding path program 1 times [2024-10-23 22:43:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688194723] [2024-10-23 22:43:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 22:43:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688194723] [2024-10-23 22:43:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688194723] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869463464] [2024-10-23 22:43:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:12,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:12,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:12,557 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:12,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 22:43:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:13,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:43:13,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-23 22:43:13,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:43:13,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869463464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:43:13,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 22:43:13,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-23 22:43:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163258330] [2024-10-23 22:43:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:43:13,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:43:13,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:43:13,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:43:13,494 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:13,665 INFO L93 Difference]: Finished difference Result 128 states and 170 transitions. [2024-10-23 22:43:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:43:13,665 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 69 [2024-10-23 22:43:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:13,666 INFO L225 Difference]: With dead ends: 128 [2024-10-23 22:43:13,666 INFO L226 Difference]: Without dead ends: 75 [2024-10-23 22:43:13,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:43:13,666 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:13,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:43:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-23 22:43:13,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-10-23 22:43:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2024-10-23 22:43:13,671 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 69 [2024-10-23 22:43:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:13,671 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2024-10-23 22:43:13,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2024-10-23 22:43:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-23 22:43:13,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:13,672 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:13,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-23 22:43:13,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 22:43:13,872 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:13,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -997341362, now seen corresponding path program 1 times [2024-10-23 22:43:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:13,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365569142] [2024-10-23 22:43:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-23 22:43:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365569142] [2024-10-23 22:43:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365569142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159783413] [2024-10-23 22:43:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:14,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:14,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:14,533 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:14,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-23 22:43:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:15,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 5465 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:43:15,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 22:43:15,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-23 22:43:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159783413] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:15,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:43:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-10-23 22:43:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011779655] [2024-10-23 22:43:15,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:43:15,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:43:15,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:43:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 22:43:15,532 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:15,792 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2024-10-23 22:43:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:43:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-23 22:43:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:15,793 INFO L225 Difference]: With dead ends: 106 [2024-10-23 22:43:15,793 INFO L226 Difference]: Without dead ends: 74 [2024-10-23 22:43:15,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 22:43:15,794 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:15,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 22:43:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-23 22:43:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-10-23 22:43:15,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 73 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2024-10-23 22:43:15,798 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 72 [2024-10-23 22:43:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:15,798 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2024-10-23 22:43:15,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2024-10-23 22:43:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-23 22:43:15,799 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:15,799 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:15,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-23 22:43:15,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 22:43:16,000 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:16,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:16,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1345682845, now seen corresponding path program 1 times [2024-10-23 22:43:16,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:16,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315707270] [2024-10-23 22:43:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:16,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-23 22:43:16,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315707270] [2024-10-23 22:43:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315707270] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516427772] [2024-10-23 22:43:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:16,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:16,617 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:16,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-23 22:43:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:17,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 5468 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:43:17,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 22:43:17,635 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-23 22:43:17,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516427772] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:17,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 22:43:17,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-10-23 22:43:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698783551] [2024-10-23 22:43:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:43:17,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 22:43:17,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 22:43:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 22:43:17,663 INFO L87 Difference]: Start difference. First operand 74 states and 96 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) [2024-10-23 22:43:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:17,838 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2024-10-23 22:43:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 22:43:17,839 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 73 [2024-10-23 22:43:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:17,839 INFO L225 Difference]: With dead ends: 85 [2024-10-23 22:43:17,839 INFO L226 Difference]: Without dead ends: 75 [2024-10-23 22:43:17,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 22:43:17,840 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:17,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:43:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-23 22:43:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-23 22:43:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-10-23 22:43:17,848 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 73 [2024-10-23 22:43:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:17,849 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-10-23 22:43:17,849 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) [2024-10-23 22:43:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-10-23 22:43:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-23 22:43:17,849 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:17,849 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:17,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-23 22:43:18,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-23 22:43:18,050 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:18,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash 416942370, now seen corresponding path program 1 times [2024-10-23 22:43:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846304642] [2024-10-23 22:43:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 22:43:18,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846304642] [2024-10-23 22:43:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846304642] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943977122] [2024-10-23 22:43:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:18,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:18,674 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:18,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-23 22:43:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:19,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 5471 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-23 22:43:19,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-23 22:43:19,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 22:43:19,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943977122] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:19,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:19,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 13 [2024-10-23 22:43:19,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475044420] [2024-10-23 22:43:19,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:19,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-23 22:43:19,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-23 22:43:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:43:19,724 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:20,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:20,200 INFO L93 Difference]: Finished difference Result 138 states and 182 transitions. [2024-10-23 22:43:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-23 22:43:20,201 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-23 22:43:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:20,201 INFO L225 Difference]: With dead ends: 138 [2024-10-23 22:43:20,201 INFO L226 Difference]: Without dead ends: 80 [2024-10-23 22:43:20,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-23 22:43:20,202 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:20,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 367 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 22:43:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-23 22:43:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-23 22:43:20,206 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) [2024-10-23 22:43:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2024-10-23 22:43:20,206 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 74 [2024-10-23 22:43:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:20,206 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2024-10-23 22:43:20,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2024-10-23 22:43:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-23 22:43:20,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:20,207 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] [2024-10-23 22:43:20,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-23 22:43:20,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-23 22:43:20,408 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:20,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash 297711965, now seen corresponding path program 1 times [2024-10-23 22:43:20,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:20,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050987614] [2024-10-23 22:43:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 22:43:21,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:21,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050987614] [2024-10-23 22:43:21,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050987614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:21,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29910466] [2024-10-23 22:43:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:21,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:21,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:21,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-23 22:43:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:22,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 5503 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 22:43:22,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-23 22:43:22,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-23 22:43:22,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29910466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:22,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:22,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-23 22:43:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412222555] [2024-10-23 22:43:22,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:22,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-23 22:43:22,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-23 22:43:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-23 22:43:22,387 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) [2024-10-23 22:43:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:23,075 INFO L93 Difference]: Finished difference Result 139 states and 187 transitions. [2024-10-23 22:43:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-23 22:43:23,076 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 [2024-10-23 22:43:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:23,077 INFO L225 Difference]: With dead ends: 139 [2024-10-23 22:43:23,077 INFO L226 Difference]: Without dead ends: 103 [2024-10-23 22:43:23,077 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 [2024-10-23 22:43:23,077 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 59 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 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, 0.6s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:23,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 519 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-23 22:43:23,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-23 22:43:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-23 22:43:23,082 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) [2024-10-23 22:43:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2024-10-23 22:43:23,082 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 79 [2024-10-23 22:43:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:23,083 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2024-10-23 22:43:23,083 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) [2024-10-23 22:43:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2024-10-23 22:43:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-23 22:43:23,084 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:23,084 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] [2024-10-23 22:43:23,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-23 22:43:23,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:23,285 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:23,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash -152255511, now seen corresponding path program 2 times [2024-10-23 22:43:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:23,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636670142] [2024-10-23 22:43:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-23 22:43:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636670142] [2024-10-23 22:43:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636670142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732679425] [2024-10-23 22:43:24,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 22:43:24,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:24,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:24,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:24,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-23 22:43:25,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 22:43:25,223 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:43:25,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 5629 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-23 22:43:25,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-23 22:43:25,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-23 22:43:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732679425] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:25,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-23 22:43:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764403895] [2024-10-23 22:43:25,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:25,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-23 22:43:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-23 22:43:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-23 22:43:25,627 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:26,651 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-10-23 22:43:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-23 22:43:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-23 22:43:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:26,653 INFO L225 Difference]: With dead ends: 179 [2024-10-23 22:43:26,653 INFO L226 Difference]: Without dead ends: 125 [2024-10-23 22:43:26,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-23 22:43:26,654 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 60 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:26,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 684 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 22:43:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-23 22:43:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-10-23 22:43:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.314516129032258) internal successors, (163), 124 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2024-10-23 22:43:26,660 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 100 [2024-10-23 22:43:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:26,660 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2024-10-23 22:43:26,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2024-10-23 22:43:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-23 22:43:26,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:26,663 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 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] [2024-10-23 22:43:26,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-23 22:43:26,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-23 22:43:26,867 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:26,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:26,868 INFO L85 PathProgramCache]: Analyzing trace with hash -398331415, now seen corresponding path program 3 times [2024-10-23 22:43:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851441517] [2024-10-23 22:43:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-23 22:43:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851441517] [2024-10-23 22:43:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851441517] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665304209] [2024-10-23 22:43:28,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 22:43:28,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:28,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:28,205 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:28,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-23 22:43:29,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 22:43:29,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:43:29,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-23 22:43:29,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-10-23 22:43:29,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2024-10-23 22:43:30,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665304209] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:30,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:30,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 6] total 29 [2024-10-23 22:43:30,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941545005] [2024-10-23 22:43:30,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:30,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-23 22:43:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-23 22:43:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2024-10-23 22:43:30,018 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:31,128 INFO L93 Difference]: Finished difference Result 196 states and 259 transitions. [2024-10-23 22:43:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-23 22:43:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-23 22:43:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:31,129 INFO L225 Difference]: With dead ends: 196 [2024-10-23 22:43:31,129 INFO L226 Difference]: Without dead ends: 142 [2024-10-23 22:43:31,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2024-10-23 22:43:31,130 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 52 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:31,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 925 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 22:43:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-23 22:43:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2024-10-23 22:43:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.3093525179856116) internal successors, (182), 139 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2024-10-23 22:43:31,138 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 124 [2024-10-23 22:43:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:31,138 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2024-10-23 22:43:31,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2024-10-23 22:43:31,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-23 22:43:31,139 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:31,139 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 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] [2024-10-23 22:43:31,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-23 22:43:31,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:31,341 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:31,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1699419376, now seen corresponding path program 4 times [2024-10-23 22:43:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471367872] [2024-10-23 22:43:31,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-23 22:43:32,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471367872] [2024-10-23 22:43:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471367872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:32,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755746426] [2024-10-23 22:43:32,821 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 22:43:32,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:32,823 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:32,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-23 22:43:33,908 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 22:43:33,908 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 22:43:33,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 5808 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-23 22:43:33,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:43:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-23 22:43:34,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 22:43:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-10-23 22:43:34,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755746426] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 22:43:34,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 22:43:34,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 13] total 40 [2024-10-23 22:43:34,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196663098] [2024-10-23 22:43:34,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 22:43:34,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-23 22:43:34,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:43:34,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-23 22:43:34,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2024-10-23 22:43:34,496 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 40 states, 40 states have (on average 4.4) internal successors, (176), 40 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:43:37,805 INFO L93 Difference]: Finished difference Result 247 states and 335 transitions. [2024-10-23 22:43:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-23 22:43:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.4) internal successors, (176), 40 states have internal predecessors, (176), 0 states have call successors, (0), 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 131 [2024-10-23 22:43:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:43:37,807 INFO L225 Difference]: With dead ends: 247 [2024-10-23 22:43:37,807 INFO L226 Difference]: Without dead ends: 181 [2024-10-23 22:43:37,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=453, Invalid=1997, Unknown=0, NotChecked=0, Total=2450 [2024-10-23 22:43:37,808 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 190 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:43:37,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1340 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 22:43:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-23 22:43:37,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2024-10-23 22:43:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.3146067415730338) internal successors, (234), 178 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2024-10-23 22:43:37,815 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 131 [2024-10-23 22:43:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:43:37,815 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2024-10-23 22:43:37,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.4) internal successors, (176), 40 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:43:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2024-10-23 22:43:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-23 22:43:37,816 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:43:37,816 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 16, 16, 16, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:43:37,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-23 22:43:38,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:38,021 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:43:38,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:43:38,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1532647172, now seen corresponding path program 5 times [2024-10-23 22:43:38,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:43:38,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597523641] [2024-10-23 22:43:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:43:38,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:43:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:43:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-10-23 22:43:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:43:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597523641] [2024-10-23 22:43:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597523641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 22:43:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303786919] [2024-10-23 22:43:39,688 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 22:43:39,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 22:43:39,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:43:39,690 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 22:43:39,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process