./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_37_unsafe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_37_unsafe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5913eacf592f380c71fbb49e1b92670d76b4ee863c598c37a25e00fe96b9a008 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 23:02:20,317 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 23:02:20,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 23:02:20,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 23:02:20,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 23:02:20,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 23:02:20,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 23:02:20,428 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 23:02:20,429 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 23:02:20,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 23:02:20,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 23:02:20,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 23:02:20,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 23:02:20,432 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 23:02:20,433 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 23:02:20,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 23:02:20,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 23:02:20,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 23:02:20,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 23:02:20,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 23:02:20,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 23:02:20,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 23:02:20,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 23:02:20,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 23:02:20,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 23:02:20,439 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 23:02:20,439 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 23:02:20,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 23:02:20,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 23:02:20,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 23:02:20,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 23:02:20,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 23:02:20,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:02:20,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 23:02:20,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 23:02:20,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 23:02:20,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 23:02:20,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 23:02:20,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 23:02:20,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 23:02:20,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 23:02:20,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 23:02:20,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5913eacf592f380c71fbb49e1b92670d76b4ee863c598c37a25e00fe96b9a008 [2024-10-23 23:02:20,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 23:02:20,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 23:02:20,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 23:02:20,747 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 23:02:20,748 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 23:02:20,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_37_unsafe.c-amalgamation.i [2024-10-23 23:02:22,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 23:02:22,657 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 23:02:22,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_37_unsafe.c-amalgamation.i [2024-10-23 23:02:22,693 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c89b605/8c726b1eb0c74c80b61ed547f9689f50/FLAG01c586259 [2024-10-23 23:02:22,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07c89b605/8c726b1eb0c74c80b61ed547f9689f50 [2024-10-23 23:02:22,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 23:02:22,716 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 23:02:22,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 23:02:22,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 23:02:22,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 23:02:22,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:02:22" (1/1) ... [2024-10-23 23:02:22,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74db2841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:22, skipping insertion in model container [2024-10-23 23:02:22,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:02:22" (1/1) ... [2024-10-23 23:02:22,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 23:02:23,535 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_37_unsafe.c-amalgamation.i[64323,64336] [2024-10-23 23:02:23,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:02:23,867 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 23:02:23,921 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/lunarlander_37_unsafe.c-amalgamation.i[64323,64336] [2024-10-23 23:02:24,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 23:02:24,426 INFO L204 MainTranslator]: Completed translation [2024-10-23 23:02:24,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24 WrapperNode [2024-10-23 23:02:24,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 23:02:24,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 23:02:24,428 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 23:02:24,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 23:02:24,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:24,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:24,816 INFO L138 Inliner]: procedures = 620, calls = 5148, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5468 [2024-10-23 23:02:24,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 23:02:24,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 23:02:24,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 23:02:24,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 23:02:24,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:24,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:24,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:24,967 INFO L175 MemorySlicer]: Split 5123 memory accesses to 12 slices as follows [2, 7, 513, 25, 65, 4097, 65, 257, 3, 5, 14, 70]. 80 percent of accesses are in the largest equivalence class. The 5077 initializations are split as follows [2, 7, 512, 0, 64, 4096, 64, 256, 0, 4, 8, 64]. The 14 writes are split as follows [0, 0, 0, 8, 0, 0, 0, 0, 1, 0, 3, 2]. [2024-10-23 23:02:24,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:24,968 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:25,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:25,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:25,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:25,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:25,213 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 23:02:25,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 23:02:25,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 23:02:25,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 23:02:25,216 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (1/1) ... [2024-10-23 23:02:25,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 23:02:25,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:25,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 23:02:25,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 23:02:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 23:02:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 23:02:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 23:02:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 23:02:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-23 23:02:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-23 23:02:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-23 23:02:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-23 23:02:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-23 23:02:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-23 23:02:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-23 23:02:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-23 23:02:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 23:02:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-23 23:02:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-23 23:02:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-23 23:02:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-23 23:02:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-23 23:02:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-23 23:02:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 23:02:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 23:02:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 23:02:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 23:02:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-23 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-23 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-23 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-23 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-23 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-23 23:02:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-23 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-23 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 23:02:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 23:02:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-23 23:02:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-23 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-23 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-23 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-23 23:02:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-23 23:02:25,641 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 23:02:25,643 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 23:02:31,875 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-10-23 23:02:31,875 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 23:02:32,193 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 23:02:32,194 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-23 23:02:32,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:02:32 BoogieIcfgContainer [2024-10-23 23:02:32,194 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 23:02:32,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 23:02:32,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 23:02:32,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 23:02:32,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:02:22" (1/3) ... [2024-10-23 23:02:32,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694d9577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:02:32, skipping insertion in model container [2024-10-23 23:02:32,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:02:24" (2/3) ... [2024-10-23 23:02:32,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694d9577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:02:32, skipping insertion in model container [2024-10-23 23:02:32,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:02:32" (3/3) ... [2024-10-23 23:02:32,204 INFO L112 eAbstractionObserver]: Analyzing ICFG lunarlander_37_unsafe.c-amalgamation.i [2024-10-23 23:02:32,220 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 23:02:32,221 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 23:02:32,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 23:02:32,295 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;@471426c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 23:02:32,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 23:02:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:02:32,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:32,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:32,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:32,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:32,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1219428462, now seen corresponding path program 1 times [2024-10-23 23:02:32,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:32,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532909450] [2024-10-23 23:02:32,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:32,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:02:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532909450] [2024-10-23 23:02:33,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532909450] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:02:33,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:02:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 23:02:33,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349911962] [2024-10-23 23:02:33,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:33,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 23:02:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:33,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 23:02:33,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:02:33,522 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.7857142857142858) internal successors, (100), 57 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:33,802 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2024-10-23 23:02:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 23:02:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:02:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:33,812 INFO L225 Difference]: With dead ends: 113 [2024-10-23 23:02:33,812 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:02:33,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 23:02:33,818 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:33,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:02:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:02:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.4) internal successors, (77), 55 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-10-23 23:02:33,857 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 39 [2024-10-23 23:02:33,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:33,857 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-10-23 23:02:33,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-10-23 23:02:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:02:33,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:33,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:33,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 23:02:33,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:33,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:33,861 INFO L85 PathProgramCache]: Analyzing trace with hash -481557306, now seen corresponding path program 1 times [2024-10-23 23:02:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580076700] [2024-10-23 23:02:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:02:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580076700] [2024-10-23 23:02:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580076700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:02:34,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:02:34,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:02:34,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632588814] [2024-10-23 23:02:34,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:34,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:02:34,779 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:35,182 INFO L93 Difference]: Finished difference Result 104 states and 143 transitions. [2024-10-23 23:02:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:02:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:35,185 INFO L225 Difference]: With dead ends: 104 [2024-10-23 23:02:35,186 INFO L226 Difference]: Without dead ends: 56 [2024-10-23 23:02:35,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:02:35,188 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:35,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:02:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-23 23:02:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-23 23:02:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-10-23 23:02:35,200 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 39 [2024-10-23 23:02:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:35,201 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-10-23 23:02:35,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-10-23 23:02:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-23 23:02:35,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:35,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:35,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 23:02:35,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:35,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash -756316920, now seen corresponding path program 1 times [2024-10-23 23:02:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:35,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490145384] [2024-10-23 23:02:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:35,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:02:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490145384] [2024-10-23 23:02:36,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490145384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 23:02:36,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 23:02:36,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 23:02:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833546211] [2024-10-23 23:02:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:36,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:36,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:02:36,409 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:36,834 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2024-10-23 23:02:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:36,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-23 23:02:36,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:36,837 INFO L225 Difference]: With dead ends: 87 [2024-10-23 23:02:36,837 INFO L226 Difference]: Without dead ends: 57 [2024-10-23 23:02:36,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 23:02:36,838 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:36,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:02:36,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-10-23 23:02:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-10-23 23:02:36,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.375) internal successors, (77), 56 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-10-23 23:02:36,851 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 39 [2024-10-23 23:02:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:36,852 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-10-23 23:02:36,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-10-23 23:02:36,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-23 23:02:36,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:36,855 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:36,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 23:02:36,855 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:36,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1790905389, now seen corresponding path program 1 times [2024-10-23 23:02:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091193704] [2024-10-23 23:02:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:36,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:38,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:02:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:38,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091193704] [2024-10-23 23:02:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091193704] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390651758] [2024-10-23 23:02:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:38,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:38,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:38,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 23:02:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:39,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 5933 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 23:02:39,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 23:02:39,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:02:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390651758] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:02:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:02:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486867459] [2024-10-23 23:02:39,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:39,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:02:39,618 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:39,893 INFO L93 Difference]: Finished difference Result 78 states and 106 transitions. [2024-10-23 23:02:39,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:39,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-23 23:02:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:39,894 INFO L225 Difference]: With dead ends: 78 [2024-10-23 23:02:39,894 INFO L226 Difference]: Without dead ends: 58 [2024-10-23 23:02:39,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:02:39,896 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:39,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-23 23:02:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-23 23:02:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-10-23 23:02:39,903 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 40 [2024-10-23 23:02:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:39,903 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-10-23 23:02:39,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-10-23 23:02:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-23 23:02:39,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:39,905 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:39,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 23:02:40,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:40,106 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:40,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash -793809956, now seen corresponding path program 1 times [2024-10-23 23:02:40,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:40,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136638005] [2024-10-23 23:02:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:02:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136638005] [2024-10-23 23:02:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136638005] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:41,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543304612] [2024-10-23 23:02:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:41,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:41,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:41,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 23:02:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:42,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 5951 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-23 23:02:42,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-23 23:02:42,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:02:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543304612] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:02:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:02:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123557773] [2024-10-23 23:02:42,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:42,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:02:42,836 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:43,167 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2024-10-23 23:02:43,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-23 23:02:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:43,169 INFO L225 Difference]: With dead ends: 69 [2024-10-23 23:02:43,169 INFO L226 Difference]: Without dead ends: 59 [2024-10-23 23:02:43,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:02:43,170 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:43,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-23 23:02:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-10-23 23:02:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2024-10-23 23:02:43,176 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 79 transitions. Word has length 43 [2024-10-23 23:02:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:43,176 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 79 transitions. [2024-10-23 23:02:43,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 79 transitions. [2024-10-23 23:02:43,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-23 23:02:43,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:43,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:43,207 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 23:02:43,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:43,379 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:43,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:43,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1367907231, now seen corresponding path program 1 times [2024-10-23 23:02:43,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:43,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677857358] [2024-10-23 23:02:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:02:44,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:44,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677857358] [2024-10-23 23:02:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677857358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658022598] [2024-10-23 23:02:44,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:44,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:44,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:44,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:44,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 23:02:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:45,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 5969 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 23:02:45,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-23 23:02:45,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:02:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658022598] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:02:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-23 23:02:45,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356364723] [2024-10-23 23:02:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:45,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:45,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:45,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:45,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:02:45,867 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:46,123 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2024-10-23 23:02:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-23 23:02:46,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:46,124 INFO L225 Difference]: With dead ends: 86 [2024-10-23 23:02:46,124 INFO L226 Difference]: Without dead ends: 60 [2024-10-23 23:02:46,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 23:02:46,125 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:46,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-23 23:02:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-23 23:02:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:46,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2024-10-23 23:02:46,130 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 46 [2024-10-23 23:02:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:46,130 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2024-10-23 23:02:46,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2024-10-23 23:02:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-23 23:02:46,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:46,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:46,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 23:02:46,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:46,332 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:46,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1170803542, now seen corresponding path program 1 times [2024-10-23 23:02:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480059442] [2024-10-23 23:02:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:46,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:02:47,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:47,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480059442] [2024-10-23 23:02:47,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480059442] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:47,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423063350] [2024-10-23 23:02:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:47,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:47,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:47,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 23:02:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:48,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 5975 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:02:48,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-23 23:02:48,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:02:48,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423063350] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:48,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:02:48,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:02:48,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871924072] [2024-10-23 23:02:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:48,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:48,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:48,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:02:48,897 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:49,217 INFO L93 Difference]: Finished difference Result 76 states and 101 transitions. [2024-10-23 23:02:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:49,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-10-23 23:02:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:49,219 INFO L225 Difference]: With dead ends: 76 [2024-10-23 23:02:49,219 INFO L226 Difference]: Without dead ends: 61 [2024-10-23 23:02:49,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:02:49,220 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:49,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-23 23:02:49,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-23 23:02:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.35) internal successors, (81), 60 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:49,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2024-10-23 23:02:49,232 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 49 [2024-10-23 23:02:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:49,232 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2024-10-23 23:02:49,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2024-10-23 23:02:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-23 23:02:49,233 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:49,233 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:49,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 23:02:49,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:49,434 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:49,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash 559835403, now seen corresponding path program 1 times [2024-10-23 23:02:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:49,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055941713] [2024-10-23 23:02:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:49,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:02:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055941713] [2024-10-23 23:02:50,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055941713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043224840] [2024-10-23 23:02:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:50,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:50,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:50,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:50,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 23:02:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:51,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 5981 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:02:51,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:02:51,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:02:51,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043224840] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:51,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:02:51,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-23 23:02:51,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023379021] [2024-10-23 23:02:51,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:51,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 23:02:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 23:02:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:02:51,624 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:51,909 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2024-10-23 23:02:51,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 23:02:51,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-23 23:02:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:51,910 INFO L225 Difference]: With dead ends: 66 [2024-10-23 23:02:51,910 INFO L226 Difference]: Without dead ends: 62 [2024-10-23 23:02:51,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 23:02:51,911 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:51,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:51,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-23 23:02:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-23 23:02:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-10-23 23:02:51,916 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 52 [2024-10-23 23:02:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:51,916 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-10-23 23:02:51,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-10-23 23:02:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-23 23:02:51,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:51,917 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:51,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-23 23:02:52,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:52,118 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:52,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash 948688438, now seen corresponding path program 1 times [2024-10-23 23:02:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804446205] [2024-10-23 23:02:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:02:53,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804446205] [2024-10-23 23:02:53,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804446205] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:53,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535774693] [2024-10-23 23:02:53,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:53,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:53,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:53,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:53,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-23 23:02:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:54,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 5987 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-23 23:02:54,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-23 23:02:54,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:02:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535774693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:02:54,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:02:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-23 23:02:54,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090937568] [2024-10-23 23:02:54,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:02:54,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-23 23:02:54,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-23 23:02:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 23:02:54,455 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:54,981 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2024-10-23 23:02:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-23 23:02:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-10-23 23:02:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:54,982 INFO L225 Difference]: With dead ends: 107 [2024-10-23 23:02:54,982 INFO L226 Difference]: Without dead ends: 72 [2024-10-23 23:02:54,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 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 23:02:54,983 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 13 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:54,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 273 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-23 23:02:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-23 23:02:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-23 23:02:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 71 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 23:02:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-10-23 23:02:55,000 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 55 [2024-10-23 23:02:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:55,000 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-10-23 23:02:55,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-10-23 23:02:55,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-23 23:02:55,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:55,003 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:55,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-23 23:02:55,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:55,204 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:55,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1849547982, now seen corresponding path program 2 times [2024-10-23 23:02:55,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:55,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25741799] [2024-10-23 23:02:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:55,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:02:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25741799] [2024-10-23 23:02:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25741799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254564661] [2024-10-23 23:02:56,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:02:56,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:56,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:56,297 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:56,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-23 23:02:57,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:02:57,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:02:57,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 6052 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-23 23:02:57,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:02:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-23 23:02:57,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:02:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-23 23:02:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254564661] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:57,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:02:57,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 8] total 12 [2024-10-23 23:02:57,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351753523] [2024-10-23 23:02:57,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:02:57,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:02:57,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:02:57,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:02:57,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:02:57,720 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:02:58,010 INFO L93 Difference]: Finished difference Result 82 states and 108 transitions. [2024-10-23 23:02:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:02:58,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-23 23:02:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:02:58,011 INFO L225 Difference]: With dead ends: 82 [2024-10-23 23:02:58,012 INFO L226 Difference]: Without dead ends: 73 [2024-10-23 23:02:58,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:02:58,013 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:02:58,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:02:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-23 23:02:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-23 23:02:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 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 23:02:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-23 23:02:58,018 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 65 [2024-10-23 23:02:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:02:58,018 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-23 23:02:58,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:02:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-23 23:02:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-23 23:02:58,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:02:58,019 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:02:58,048 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 23:02:58,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:58,220 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:02:58,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:02:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 938461958, now seen corresponding path program 1 times [2024-10-23 23:02:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:02:58,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595676345] [2024-10-23 23:02:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:02:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:02:59,112 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 23:02:59,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:02:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595676345] [2024-10-23 23:02:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595676345] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:02:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883019529] [2024-10-23 23:02:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:02:59,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:02:59,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:02:59,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:02:59,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-23 23:03:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:00,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 6066 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:03:00,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:00,476 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 23:03:00,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:00,502 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 23:03:00,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883019529] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:03:00,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:03:00,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-23 23:03:00,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423353505] [2024-10-23 23:03:00,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:03:00,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 23:03:00,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 23:03:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-23 23:03:00,505 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:00,924 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2024-10-23 23:03:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 23:03:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 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 68 [2024-10-23 23:03:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:00,926 INFO L225 Difference]: With dead ends: 128 [2024-10-23 23:03:00,926 INFO L226 Difference]: Without dead ends: 83 [2024-10-23 23:03:00,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 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 23:03:00,927 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 15 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:00,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 219 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:03:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-23 23:03:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-10-23 23:03:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2024-10-23 23:03:00,933 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 68 [2024-10-23 23:03:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:00,933 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2024-10-23 23:03:00,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2024-10-23 23:03:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-23 23:03:00,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:00,935 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, 1, 1, 1, 1] [2024-10-23 23:03:00,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-23 23:03:01,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-23 23:03:01,136 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:01,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:01,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1365987656, now seen corresponding path program 2 times [2024-10-23 23:03:01,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:01,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513580582] [2024-10-23 23:03:01,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:01,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:02,232 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 23:03:02,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:02,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513580582] [2024-10-23 23:03:02,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513580582] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:02,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085471939] [2024-10-23 23:03:02,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:03:02,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:02,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:02,235 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:03:02,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-23 23:03:03,511 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:03:03,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:03:03,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 6131 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-23 23:03:03,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-23 23:03:03,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-23 23:03:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085471939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:03:03,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:03:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 5] total 14 [2024-10-23 23:03:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790861033] [2024-10-23 23:03:03,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:03:03,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-23 23:03:03,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-23 23:03:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-10-23 23:03:03,673 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:04,498 INFO L93 Difference]: Finished difference Result 146 states and 196 transitions. [2024-10-23 23:03:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-23 23:03:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 78 [2024-10-23 23:03:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:04,500 INFO L225 Difference]: With dead ends: 146 [2024-10-23 23:03:04,500 INFO L226 Difference]: Without dead ends: 92 [2024-10-23 23:03:04,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-23 23:03:04,501 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:04,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 552 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 23:03:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-23 23:03:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2024-10-23 23:03:04,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 89 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:04,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 118 transitions. [2024-10-23 23:03:04,510 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 118 transitions. Word has length 78 [2024-10-23 23:03:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:04,510 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 118 transitions. [2024-10-23 23:03:04,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 118 transitions. [2024-10-23 23:03:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-23 23:03:04,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:04,512 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:04,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-23 23:03:04,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:04,713 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:04,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1427743436, now seen corresponding path program 3 times [2024-10-23 23:03:04,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:04,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486334411] [2024-10-23 23:03:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-23 23:03:05,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:05,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486334411] [2024-10-23 23:03:05,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486334411] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:05,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388285432] [2024-10-23 23:03:05,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:03:05,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:05,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:03:05,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-23 23:03:07,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-23 23:03:07,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:03:07,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 5998 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 23:03:07,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 23:03:07,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:03:07,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388285432] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:07,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:03:07,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2024-10-23 23:03:07,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659623326] [2024-10-23 23:03:07,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:03:07,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 23:03:07,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 23:03:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:03:07,381 INFO L87 Difference]: Start difference. First operand 90 states and 118 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:07,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:07,774 INFO L93 Difference]: Finished difference Result 149 states and 198 transitions. [2024-10-23 23:03:07,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:03:07,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 85 [2024-10-23 23:03:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:07,776 INFO L225 Difference]: With dead ends: 149 [2024-10-23 23:03:07,776 INFO L226 Difference]: Without dead ends: 91 [2024-10-23 23:03:07,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-23 23:03:07,777 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:07,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 213 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-23 23:03:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-23 23:03:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-10-23 23:03:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 90 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2024-10-23 23:03:07,783 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 85 [2024-10-23 23:03:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:07,783 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2024-10-23 23:03:07,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2024-10-23 23:03:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-23 23:03:07,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:07,784 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:07,827 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 23:03:07,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-23 23:03:07,985 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:07,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -254940994, now seen corresponding path program 1 times [2024-10-23 23:03:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:07,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686698956] [2024-10-23 23:03:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-23 23:03:09,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686698956] [2024-10-23 23:03:09,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686698956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372336556] [2024-10-23 23:03:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:09,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:09,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:09,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 23:03:09,069 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 23:03:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:10,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 6188 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:03:10,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:03:10,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 23:03:10,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372336556] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:10,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:03:10,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 23:03:10,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579582161] [2024-10-23 23:03:10,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:03:10,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:03:10,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:10,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:03:10,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:03:10,369 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 23:03:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:10,719 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2024-10-23 23:03:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:03:10,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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) Word has length 88 [2024-10-23 23:03:10,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:10,720 INFO L225 Difference]: With dead ends: 126 [2024-10-23 23:03:10,720 INFO L226 Difference]: Without dead ends: 92 [2024-10-23 23:03:10,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:03:10,721 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:10,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:03:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-23 23:03:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-23 23:03:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3186813186813187) internal successors, (120), 91 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2024-10-23 23:03:10,729 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 88 [2024-10-23 23:03:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:10,730 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2024-10-23 23:03:10,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 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 23:03:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2024-10-23 23:03:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-23 23:03:10,730 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:10,731 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:10,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-23 23:03:10,931 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 23:03:10,931 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:10,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1646108218, now seen corresponding path program 1 times [2024-10-23 23:03:10,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:10,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988435459] [2024-10-23 23:03:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-23 23:03:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988435459] [2024-10-23 23:03:12,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988435459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:12,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133734302] [2024-10-23 23:03:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:12,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:12,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:12,217 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 23:03:12,217 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 23:03:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:13,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 6202 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:03:13,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:03:13,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-23 23:03:13,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133734302] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:13,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:03:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 23:03:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662463136] [2024-10-23 23:03:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:03:13,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:03:13,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:13,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:03:13,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:03:13,541 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 23:03:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:13,883 INFO L93 Difference]: Finished difference Result 128 states and 168 transitions. [2024-10-23 23:03:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:03:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) Word has length 91 [2024-10-23 23:03:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:13,885 INFO L225 Difference]: With dead ends: 128 [2024-10-23 23:03:13,885 INFO L226 Difference]: Without dead ends: 93 [2024-10-23 23:03:13,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:03:13,886 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 163 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 23:03:13,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-23 23:03:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-23 23:03:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-23 23:03:13,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.315217391304348) internal successors, (121), 92 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:13,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 121 transitions. [2024-10-23 23:03:13,891 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 121 transitions. Word has length 91 [2024-10-23 23:03:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:13,892 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 121 transitions. [2024-10-23 23:03:13,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 23:03:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 121 transitions. [2024-10-23 23:03:13,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-23 23:03:13,892 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:13,893 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:13,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-23 23:03:14,093 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 23:03:14,093 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:14,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:14,094 INFO L85 PathProgramCache]: Analyzing trace with hash -613875054, now seen corresponding path program 1 times [2024-10-23 23:03:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:14,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843004111] [2024-10-23 23:03:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:14,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 23:03:15,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:15,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843004111] [2024-10-23 23:03:15,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843004111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:15,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351431499] [2024-10-23 23:03:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:15,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:15,069 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 23:03:15,070 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 23:03:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:16,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 6205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 23:03:16,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-23 23:03:16,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-23 23:03:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351431499] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:16,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 23:03:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 13 [2024-10-23 23:03:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783251518] [2024-10-23 23:03:16,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 23:03:16,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 23:03:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 23:03:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:03:16,402 INFO L87 Difference]: Start difference. First operand 93 states and 121 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 23:03:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:16,644 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2024-10-23 23:03:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 23:03:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) Word has length 92 [2024-10-23 23:03:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:16,645 INFO L225 Difference]: With dead ends: 108 [2024-10-23 23:03:16,645 INFO L226 Difference]: Without dead ends: 95 [2024-10-23 23:03:16,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-23 23:03:16,646 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 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 23:03:16,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 23:03:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-23 23:03:16,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-23 23:03:16,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 94 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 123 transitions. [2024-10-23 23:03:16,653 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 123 transitions. Word has length 92 [2024-10-23 23:03:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:16,653 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 123 transitions. [2024-10-23 23:03:16,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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 23:03:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 123 transitions. [2024-10-23 23:03:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-23 23:03:16,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:16,654 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:16,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-23 23:03:16,855 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 23:03:16,855 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:16,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1906087440, now seen corresponding path program 1 times [2024-10-23 23:03:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:16,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676647067] [2024-10-23 23:03:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:16,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 23:03:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676647067] [2024-10-23 23:03:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676647067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449250809] [2024-10-23 23:03:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:17,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:17,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:17,924 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 23:03:17,925 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 23:03:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:19,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 6211 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-23 23:03:19,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-23 23:03:19,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 23:03:19,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449250809] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:03:19,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:03:19,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 7] total 22 [2024-10-23 23:03:19,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416496743] [2024-10-23 23:03:19,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:03:19,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-23 23:03:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-23 23:03:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-10-23 23:03:19,429 INFO L87 Difference]: Start difference. First operand 95 states and 123 transitions. Second operand has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:20,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:20,751 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2024-10-23 23:03:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-23 23:03:20,752 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 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 94 [2024-10-23 23:03:20,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:20,753 INFO L225 Difference]: With dead ends: 181 [2024-10-23 23:03:20,753 INFO L226 Difference]: Without dead ends: 116 [2024-10-23 23:03:20,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-10-23 23:03:20,754 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:20,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 946 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 23:03:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-10-23 23:03:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-10-23 23:03:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.3097345132743363) internal successors, (148), 113 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 148 transitions. [2024-10-23 23:03:20,761 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 148 transitions. Word has length 94 [2024-10-23 23:03:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:20,761 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 148 transitions. [2024-10-23 23:03:20,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.181818181818182) internal successors, (136), 22 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 148 transitions. [2024-10-23 23:03:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-23 23:03:20,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:20,762 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:20,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-23 23:03:20,963 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 23:03:20,964 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:20,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:20,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1649604661, now seen corresponding path program 2 times [2024-10-23 23:03:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:20,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173846236] [2024-10-23 23:03:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-23 23:03:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173846236] [2024-10-23 23:03:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173846236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582804845] [2024-10-23 23:03:22,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-23 23:03:22,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:22,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:22,266 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 23:03:22,268 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 23:03:23,576 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-23 23:03:23,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:03:23,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 6330 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-23 23:03:23,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 23:03:23,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 70 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-23 23:03:23,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582804845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:03:23,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:03:23,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 26 [2024-10-23 23:03:23,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214505262] [2024-10-23 23:03:23,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:03:23,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-23 23:03:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:23,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-23 23:03:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-10-23 23:03:23,949 INFO L87 Difference]: Start difference. First operand 114 states and 148 transitions. Second operand has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:25,319 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2024-10-23 23:03:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-23 23:03:25,320 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 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 113 [2024-10-23 23:03:25,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:25,320 INFO L225 Difference]: With dead ends: 219 [2024-10-23 23:03:25,321 INFO L226 Difference]: Without dead ends: 136 [2024-10-23 23:03:25,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2024-10-23 23:03:25,321 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 64 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:25,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 929 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 23:03:25,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-23 23:03:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-10-23 23:03:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 135 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:25,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 177 transitions. [2024-10-23 23:03:25,329 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 177 transitions. Word has length 113 [2024-10-23 23:03:25,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:25,329 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 177 transitions. [2024-10-23 23:03:25,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.115384615384615) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:25,329 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 177 transitions. [2024-10-23 23:03:25,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-23 23:03:25,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:25,331 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:25,366 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 23:03:25,531 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 23:03:25,532 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:25,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168043, now seen corresponding path program 3 times [2024-10-23 23:03:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030916296] [2024-10-23 23:03:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-10-23 23:03:26,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030916296] [2024-10-23 23:03:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030916296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:26,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208471203] [2024-10-23 23:03:26,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-23 23:03:26,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:26,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:26,687 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 23:03:26,688 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 23:03:28,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-23 23:03:28,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:03:28,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 6098 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-23 23:03:28,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-10-23 23:03:28,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-10-23 23:03:28,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208471203] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:03:28,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:03:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-10-23 23:03:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373580013] [2024-10-23 23:03:28,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:03:28,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-23 23:03:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-23 23:03:28,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-23 23:03:28,563 INFO L87 Difference]: Start difference. First operand 136 states and 177 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:29,634 INFO L93 Difference]: Finished difference Result 264 states and 352 transitions. [2024-10-23 23:03:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-23 23:03:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-10-23 23:03:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:29,636 INFO L225 Difference]: With dead ends: 264 [2024-10-23 23:03:29,636 INFO L226 Difference]: Without dead ends: 160 [2024-10-23 23:03:29,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-10-23 23:03:29,637 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 68 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:29,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 734 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 23:03:29,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-23 23:03:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2024-10-23 23:03:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.3181818181818181) internal successors, (203), 154 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 203 transitions. [2024-10-23 23:03:29,646 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 203 transitions. Word has length 135 [2024-10-23 23:03:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:29,646 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 203 transitions. [2024-10-23 23:03:29,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 203 transitions. [2024-10-23 23:03:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-23 23:03:29,647 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:29,648 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 7, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:29,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-23 23:03:29,848 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 23:03:29,848 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:29,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -599189374, now seen corresponding path program 4 times [2024-10-23 23:03:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:29,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789517229] [2024-10-23 23:03:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-10-23 23:03:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789517229] [2024-10-23 23:03:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789517229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882452492] [2024-10-23 23:03:31,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-23 23:03:31,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:31,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:31,036 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 23:03:31,037 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 23:03:32,389 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-23 23:03:32,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-23 23:03:32,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 6520 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-23 23:03:32,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 23:03:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-23 23:03:32,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 23:03:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-10-23 23:03:33,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882452492] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 23:03:33,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 23:03:33,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 13] total 43 [2024-10-23 23:03:33,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475947066] [2024-10-23 23:03:33,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 23:03:33,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-23 23:03:33,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 23:03:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-23 23:03:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1595, Unknown=0, NotChecked=0, Total=1806 [2024-10-23 23:03:33,207 INFO L87 Difference]: Start difference. First operand 155 states and 203 transitions. Second operand has 43 states, 43 states have (on average 4.488372093023256) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 23:03:38,166 INFO L93 Difference]: Finished difference Result 314 states and 427 transitions. [2024-10-23 23:03:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-23 23:03:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.488372093023256) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 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 145 [2024-10-23 23:03:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 23:03:38,167 INFO L225 Difference]: With dead ends: 314 [2024-10-23 23:03:38,167 INFO L226 Difference]: Without dead ends: 192 [2024-10-23 23:03:38,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=451, Invalid=2305, Unknown=0, NotChecked=0, Total=2756 [2024-10-23 23:03:38,169 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 158 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-23 23:03:38,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 2386 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-23 23:03:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-23 23:03:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-10-23 23:03:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.3193717277486912) internal successors, (252), 191 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 252 transitions. [2024-10-23 23:03:38,179 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 252 transitions. Word has length 145 [2024-10-23 23:03:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 23:03:38,179 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 252 transitions. [2024-10-23 23:03:38,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.488372093023256) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 23:03:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 252 transitions. [2024-10-23 23:03:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-10-23 23:03:38,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 23:03:38,181 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 12, 12, 12, 8, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 23:03:38,209 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 23:03:38,381 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 23:03:38,382 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 23:03:38,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 23:03:38,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1326676135, now seen corresponding path program 5 times [2024-10-23 23:03:38,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 23:03:38,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384082927] [2024-10-23 23:03:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 23:03:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 23:03:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 23:03:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2024-10-23 23:03:39,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 23:03:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384082927] [2024-10-23 23:03:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384082927] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 23:03:39,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69252840] [2024-10-23 23:03:39,986 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-23 23:03:39,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 23:03:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 23:03:39,987 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 23:03:39,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process