./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/gcas_10_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/gcas_10_safe.c-amalgamation.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6735ae9e1ccddbe6f18319f9a34a2643278156bd78b294dfc3f0746585993fa3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 17:55:24,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 17:55:24,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 17:55:24,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 17:55:24,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 17:55:24,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 17:55:24,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 17:55:24,288 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 17:55:24,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 17:55:24,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 17:55:24,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 17:55:24,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 17:55:24,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 17:55:24,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 17:55:24,290 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 17:55:24,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 17:55:24,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 17:55:24,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 17:55:24,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 17:55:24,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 17:55:24,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 17:55:24,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 17:55:24,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 17:55:24,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 17:55:24,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 17:55:24,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 17:55:24,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 17:55:24,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 17:55:24,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 17:55:24,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 17:55:24,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 17:55:24,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 17:55:24,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:55:24,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 17:55:24,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 17:55:24,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 17:55:24,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 17:55:24,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 17:55:24,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 17:55:24,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 17:55:24,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 17:55:24,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 17:55:24,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6735ae9e1ccddbe6f18319f9a34a2643278156bd78b294dfc3f0746585993fa3 [2024-10-12 17:55:24,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 17:55:24,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 17:55:24,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 17:55:24,571 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 17:55:24,572 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 17:55:24,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i [2024-10-12 17:55:26,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 17:55:26,353 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 17:55:26,353 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/gcas_10_safe.c-amalgamation.i [2024-10-12 17:55:26,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9424ab456/25678bb2b17d4b19a7fcc87e95b61a6f/FLAG064deda3e [2024-10-12 17:55:26,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9424ab456/25678bb2b17d4b19a7fcc87e95b61a6f [2024-10-12 17:55:26,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 17:55:26,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 17:55:26,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 17:55:26,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 17:55:26,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 17:55:26,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:55:26" (1/1) ... [2024-10-12 17:55:26,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c522ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:26, skipping insertion in model container [2024-10-12 17:55:26,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 05:55:26" (1/1) ... [2024-10-12 17:55:26,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 17:55:27,113 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/gcas_10_safe.c-amalgamation.i[65239,65252] [2024-10-12 17:55:27,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:55:27,326 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 17:55:27,381 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/gcas_10_safe.c-amalgamation.i[65239,65252] [2024-10-12 17:55:27,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 17:55:27,718 INFO L204 MainTranslator]: Completed translation [2024-10-12 17:55:27,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27 WrapperNode [2024-10-12 17:55:27,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 17:55:27,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 17:55:27,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 17:55:27,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 17:55:27,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:27,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:27,918 INFO L138 Inliner]: procedures = 619, calls = 2157, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 2547 [2024-10-12 17:55:27,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 17:55:27,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 17:55:27,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 17:55:27,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 17:55:27,933 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:27,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:27,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,015 INFO L175 MemorySlicer]: Split 2133 memory accesses to 12 slices as follows [2, 7, 449, 43, 33, 1025, 33, 449, 15, 38, 36, 3]. 48 percent of accesses are in the largest equivalence class. The 2071 initializations are split as follows [2, 7, 448, 0, 32, 1024, 32, 448, 14, 32, 32, 0]. The 19 writes are split as follows [0, 0, 0, 14, 0, 0, 0, 0, 0, 2, 2, 1]. [2024-10-12 17:55:28,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,111 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 17:55:28,112 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 17:55:28,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 17:55:28,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 17:55:28,116 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (1/1) ... [2024-10-12 17:55:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 17:55:28,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:28,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 17:55:28,158 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 [2024-10-12 17:55:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-12 17:55:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-12 17:55:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-12 17:55:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-12 17:55:28,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-12 17:55:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-12 17:55:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-12 17:55:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-12 17:55:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-12 17:55:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 17:55:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 17:55:28,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 17:55:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-12 17:55:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 17:55:28,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 17:55:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 17:55:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 17:55:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 17:55:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 17:55:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 17:55:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 17:55:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 17:55:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 17:55:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 17:55:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 17:55:28,440 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 17:55:28,442 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 17:55:30,652 INFO L? ?]: Removed 144 outVars from TransFormulas that were not future-live. [2024-10-12 17:55:30,652 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 17:55:30,796 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 17:55:30,797 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-12 17:55:30,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:55:30 BoogieIcfgContainer [2024-10-12 17:55:30,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 17:55:30,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 17:55:30,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 17:55:30,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 17:55:30,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 05:55:26" (1/3) ... [2024-10-12 17:55:30,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b85439c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:55:30, skipping insertion in model container [2024-10-12 17:55:30,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 05:55:27" (2/3) ... [2024-10-12 17:55:30,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b85439c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 05:55:30, skipping insertion in model container [2024-10-12 17:55:30,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:55:30" (3/3) ... [2024-10-12 17:55:30,806 INFO L112 eAbstractionObserver]: Analyzing ICFG gcas_10_safe.c-amalgamation.i [2024-10-12 17:55:30,821 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 17:55:30,822 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 17:55:30,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 17:55:30,895 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;@5a180066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 17:55:30,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 17:55:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 17:55:30,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:30,910 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:30,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:30,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash -781333683, now seen corresponding path program 1 times [2024-10-12 17:55:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:30,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415419854] [2024-10-12 17:55:30,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:30,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415419854] [2024-10-12 17:55:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415419854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:31,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:55:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 17:55:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474471493] [2024-10-12 17:55:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:31,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 17:55:31,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 17:55:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 17:55:31,741 INFO L87 Difference]: Start difference. First operand has 75 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 74 states have internal predecessors, (128), 0 states have call successors, (0), 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 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:31,985 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2024-10-12 17:55:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 17:55:31,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 17:55:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:31,995 INFO L225 Difference]: With dead ends: 147 [2024-10-12 17:55:31,995 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 17:55:31,998 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 [2024-10-12 17:55:32,002 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:32,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:55:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 17:55:32,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 17:55:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 72 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) [2024-10-12 17:55:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2024-10-12 17:55:32,047 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 100 transitions. Word has length 56 [2024-10-12 17:55:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:32,048 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 100 transitions. [2024-10-12 17:55:32,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 100 transitions. [2024-10-12 17:55:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 17:55:32,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:32,051 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:32,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 17:55:32,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:32,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2129147117, now seen corresponding path program 1 times [2024-10-12 17:55:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:32,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030781709] [2024-10-12 17:55:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030781709] [2024-10-12 17:55:32,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030781709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:32,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:55:32,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 17:55:32,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428351181] [2024-10-12 17:55:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:32,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:32,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:55:32,487 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:32,769 INFO L93 Difference]: Finished difference Result 138 states and 189 transitions. [2024-10-12 17:55:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:32,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 17:55:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:32,771 INFO L225 Difference]: With dead ends: 138 [2024-10-12 17:55:32,771 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 17:55:32,772 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 [2024-10-12 17:55:32,773 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:32,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:32,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 17:55:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 17:55:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2024-10-12 17:55:32,784 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 56 [2024-10-12 17:55:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:32,785 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2024-10-12 17:55:32,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2024-10-12 17:55:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 17:55:32,788 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:32,788 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:32,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 17:55:32,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:32,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2113628399, now seen corresponding path program 1 times [2024-10-12 17:55:32,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:32,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981252085] [2024-10-12 17:55:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:32,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:33,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:33,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981252085] [2024-10-12 17:55:33,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981252085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:33,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:55:33,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 17:55:33,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525853495] [2024-10-12 17:55:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:33,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:55:33,251 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:33,523 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2024-10-12 17:55:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 17:55:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:33,525 INFO L225 Difference]: With dead ends: 105 [2024-10-12 17:55:33,525 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 17:55:33,525 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 [2024-10-12 17:55:33,526 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:33,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:33,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 17:55:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 17:55:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3611111111111112) internal successors, (98), 72 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2024-10-12 17:55:33,537 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 98 transitions. Word has length 56 [2024-10-12 17:55:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:33,537 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 98 transitions. [2024-10-12 17:55:33,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 98 transitions. [2024-10-12 17:55:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 17:55:33,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:33,542 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:33,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 17:55:33,542 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:33,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1092560045, now seen corresponding path program 1 times [2024-10-12 17:55:33,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406935947] [2024-10-12 17:55:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:33,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406935947] [2024-10-12 17:55:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406935947] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:33,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:55:33,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 17:55:33,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326052633] [2024-10-12 17:55:33,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:33,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:33,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:55:33,945 INFO L87 Difference]: Start difference. First operand 73 states and 98 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:34,308 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2024-10-12 17:55:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:34,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 17:55:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:34,311 INFO L225 Difference]: With dead ends: 76 [2024-10-12 17:55:34,311 INFO L226 Difference]: Without dead ends: 73 [2024-10-12 17:55:34,311 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 [2024-10-12 17:55:34,312 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:34,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 17:55:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-12 17:55:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-12 17:55:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2024-10-12 17:55:34,324 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 56 [2024-10-12 17:55:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:34,324 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2024-10-12 17:55:34,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2024-10-12 17:55:34,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 17:55:34,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:34,325 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:34,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 17:55:34,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:34,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1092561967, now seen corresponding path program 1 times [2024-10-12 17:55:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789111052] [2024-10-12 17:55:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:34,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789111052] [2024-10-12 17:55:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789111052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:34,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 17:55:34,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 17:55:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430528565] [2024-10-12 17:55:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:34,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:34,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 17:55:34,939 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:35,178 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2024-10-12 17:55:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-12 17:55:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:35,180 INFO L225 Difference]: With dead ends: 97 [2024-10-12 17:55:35,181 INFO L226 Difference]: Without dead ends: 76 [2024-10-12 17:55:35,181 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 [2024-10-12 17:55:35,182 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:35,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 155 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:55:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-10-12 17:55:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2024-10-12 17:55:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 73 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 98 transitions. [2024-10-12 17:55:35,195 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 98 transitions. Word has length 56 [2024-10-12 17:55:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:35,195 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 98 transitions. [2024-10-12 17:55:35,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 98 transitions. [2024-10-12 17:55:35,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 17:55:35,196 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:35,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:35,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 17:55:35,196 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:35,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:35,197 INFO L85 PathProgramCache]: Analyzing trace with hash 986750680, now seen corresponding path program 1 times [2024-10-12 17:55:35,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:35,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300680450] [2024-10-12 17:55:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300680450] [2024-10-12 17:55:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300680450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922100938] [2024-10-12 17:55:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:35,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:35,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:35,829 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) [2024-10-12 17:55:35,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 17:55:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:36,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 17:55:36,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 17:55:36,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 17:55:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922100938] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:36,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:55:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-12 17:55:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659873201] [2024-10-12 17:55:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:36,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:55:36,672 INFO L87 Difference]: Start difference. First operand 74 states and 98 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:37,061 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-10-12 17:55:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:37,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-10-12 17:55:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:37,063 INFO L225 Difference]: With dead ends: 86 [2024-10-12 17:55:37,063 INFO L226 Difference]: Without dead ends: 75 [2024-10-12 17:55:37,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 17:55:37,064 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:37,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 17:55:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-12 17:55:37,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-12 17:55:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.337837837837838) internal successors, (99), 74 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2024-10-12 17:55:37,069 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 59 [2024-10-12 17:55:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:37,070 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2024-10-12 17:55:37,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:37,070 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2024-10-12 17:55:37,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-12 17:55:37,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:37,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:37,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 17:55:37,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-12 17:55:37,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:37,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -985336725, now seen corresponding path program 1 times [2024-10-12 17:55:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:37,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667546617] [2024-10-12 17:55:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 17:55:37,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667546617] [2024-10-12 17:55:37,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667546617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:37,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689900035] [2024-10-12 17:55:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:37,806 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) [2024-10-12 17:55:37,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 17:55:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:38,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 17:55:38,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 17:55:38,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:55:38,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689900035] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:38,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 17:55:38,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 17:55:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167876372] [2024-10-12 17:55:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:38,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:38,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 17:55:38,535 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:38,857 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2024-10-12 17:55:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-12 17:55:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:38,858 INFO L225 Difference]: With dead ends: 107 [2024-10-12 17:55:38,858 INFO L226 Difference]: Without dead ends: 80 [2024-10-12 17:55:38,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 17:55:38,859 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:38,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-12 17:55:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-10-12 17:55:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.3333333333333333) internal successors, (100), 75 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) [2024-10-12 17:55:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2024-10-12 17:55:38,864 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 62 [2024-10-12 17:55:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:38,865 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2024-10-12 17:55:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2024-10-12 17:55:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-12 17:55:38,866 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:38,866 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:38,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 17:55:39,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-12 17:55:39,068 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:39,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:39,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1664813890, now seen corresponding path program 1 times [2024-10-12 17:55:39,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:39,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212493633] [2024-10-12 17:55:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:39,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 17:55:39,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:39,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212493633] [2024-10-12 17:55:39,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212493633] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:39,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463289884] [2024-10-12 17:55:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:39,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:39,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:39,539 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) [2024-10-12 17:55:39,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 17:55:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:40,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 17:55:40,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 17:55:40,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 17:55:40,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463289884] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:40,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:55:40,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 17:55:40,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846851305] [2024-10-12 17:55:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:40,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:40,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:55:40,309 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:40,512 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2024-10-12 17:55:40,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:40,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-12 17:55:40,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:40,514 INFO L225 Difference]: With dead ends: 93 [2024-10-12 17:55:40,514 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 17:55:40,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:55:40,515 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:40,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:55:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 17:55:40,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-10-12 17:55:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 76 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2024-10-12 17:55:40,525 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 65 [2024-10-12 17:55:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:40,525 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2024-10-12 17:55:40,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2024-10-12 17:55:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-12 17:55:40,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:40,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:40,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 17:55:40,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:40,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:40,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1900472348, now seen corresponding path program 1 times [2024-10-12 17:55:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:40,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505763432] [2024-10-12 17:55:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:40,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 17:55:41,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505763432] [2024-10-12 17:55:41,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505763432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:41,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204565413] [2024-10-12 17:55:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:41,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:41,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:41,202 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) [2024-10-12 17:55:41,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 17:55:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:41,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 17:55:41,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 17:55:41,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:42,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 17:55:42,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204565413] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:42,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:55:42,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-12 17:55:42,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601326261] [2024-10-12 17:55:42,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:42,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 17:55:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:42,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 17:55:42,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:55:42,012 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:42,313 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-10-12 17:55:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 17:55:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-10-12 17:55:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:42,315 INFO L225 Difference]: With dead ends: 83 [2024-10-12 17:55:42,315 INFO L226 Difference]: Without dead ends: 78 [2024-10-12 17:55:42,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:55:42,316 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:42,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 154 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-12 17:55:42,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-12 17:55:42,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2024-10-12 17:55:42,323 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 68 [2024-10-12 17:55:42,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:42,328 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2024-10-12 17:55:42,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2024-10-12 17:55:42,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-12 17:55:42,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:42,330 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:42,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 17:55:42,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:42,530 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:42,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1506015068, now seen corresponding path program 1 times [2024-10-12 17:55:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:42,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390714049] [2024-10-12 17:55:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 17:55:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390714049] [2024-10-12 17:55:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390714049] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531550728] [2024-10-12 17:55:43,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:43,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:43,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:43,016 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) [2024-10-12 17:55:43,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 17:55:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:43,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 17:55:43,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 17:55:43,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 17:55:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531550728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:55:43,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:55:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-12 17:55:43,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666792670] [2024-10-12 17:55:43,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:55:43,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 17:55:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:43,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 17:55:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-12 17:55:43,702 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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) [2024-10-12 17:55:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:44,000 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2024-10-12 17:55:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 17:55:44,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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) Word has length 71 [2024-10-12 17:55:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:44,002 INFO L225 Difference]: With dead ends: 111 [2024-10-12 17:55:44,002 INFO L226 Difference]: Without dead ends: 87 [2024-10-12 17:55:44,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-12 17:55:44,003 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 19 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:44,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 235 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-12 17:55:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-10-12 17:55:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2024-10-12 17:55:44,011 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 71 [2024-10-12 17:55:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:44,011 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2024-10-12 17:55:44,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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) [2024-10-12 17:55:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2024-10-12 17:55:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-12 17:55:44,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:44,012 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:44,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 17:55:44,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-12 17:55:44,213 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:44,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1738722315, now seen corresponding path program 2 times [2024-10-12 17:55:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533564193] [2024-10-12 17:55:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 17:55:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:44,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533564193] [2024-10-12 17:55:44,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533564193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:44,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621002779] [2024-10-12 17:55:44,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:55:44,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:44,775 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) [2024-10-12 17:55:44,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 17:55:45,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:55:45,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:55:45,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:55:45,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-12 17:55:45,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 17:55:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621002779] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:55:45,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:55:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 11 [2024-10-12 17:55:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650466795] [2024-10-12 17:55:45,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:55:45,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 17:55:45,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 17:55:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 17:55:45,609 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:46,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:46,360 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2024-10-12 17:55:46,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 17:55:46,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-10-12 17:55:46,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:46,362 INFO L225 Difference]: With dead ends: 125 [2024-10-12 17:55:46,362 INFO L226 Difference]: Without dead ends: 101 [2024-10-12 17:55:46,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-12 17:55:46,363 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 20 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:46,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 629 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 17:55:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-12 17:55:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2024-10-12 17:55:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-10-12 17:55:46,369 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 80 [2024-10-12 17:55:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:46,369 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-10-12 17:55:46,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.181818181818182) internal successors, (101), 11 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-10-12 17:55:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 17:55:46,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:46,374 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:46,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 17:55:46,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:46,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:46,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1779525407, now seen corresponding path program 3 times [2024-10-12 17:55:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:46,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765329547] [2024-10-12 17:55:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:46,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 17:55:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:47,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765329547] [2024-10-12 17:55:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765329547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:47,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592487447] [2024-10-12 17:55:47,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 17:55:47,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:47,253 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) [2024-10-12 17:55:47,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 17:55:47,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 17:55:47,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:55:48,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 17:55:48,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-10-12 17:55:48,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:55:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592487447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 17:55:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 17:55:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771040097] [2024-10-12 17:55:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:48,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:55:48,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:48,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:55:48,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 17:55:48,044 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:48,303 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2024-10-12 17:55:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:55:48,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 [2024-10-12 17:55:48,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:48,304 INFO L225 Difference]: With dead ends: 133 [2024-10-12 17:55:48,304 INFO L226 Difference]: Without dead ends: 102 [2024-10-12 17:55:48,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 17:55:48,305 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:48,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 230 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-12 17:55:48,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-10-12 17:55:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2024-10-12 17:55:48,310 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 92 [2024-10-12 17:55:48,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:48,310 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2024-10-12 17:55:48,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:48,310 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2024-10-12 17:55:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 17:55:48,311 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:48,311 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:48,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 17:55:48,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:48,512 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:48,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1876763282, now seen corresponding path program 1 times [2024-10-12 17:55:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:48,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439987272] [2024-10-12 17:55:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:48,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 17:55:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439987272] [2024-10-12 17:55:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439987272] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:49,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486518184] [2024-10-12 17:55:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:49,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:49,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:49,244 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) [2024-10-12 17:55:49,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 17:55:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:49,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:55:49,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 17:55:49,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:55:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486518184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:55:49,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 17:55:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-10-12 17:55:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325711554] [2024-10-12 17:55:49,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:49,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:55:49,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:55:49,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 17:55:49,927 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2024-10-12 17:55:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:50,233 INFO L93 Difference]: Finished difference Result 159 states and 211 transitions. [2024-10-12 17:55:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:55:50,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 95 [2024-10-12 17:55:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:50,234 INFO L225 Difference]: With dead ends: 159 [2024-10-12 17:55:50,234 INFO L226 Difference]: Without dead ends: 103 [2024-10-12 17:55:50,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 17:55:50,235 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:50,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 228 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-12 17:55:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-12 17:55:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.32) internal successors, (132), 100 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2024-10-12 17:55:50,240 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 95 [2024-10-12 17:55:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:50,240 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2024-10-12 17:55:50,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2024-10-12 17:55:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2024-10-12 17:55:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-12 17:55:50,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:50,241 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:50,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 17:55:50,442 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,SelfDestructingSolverStorable12 [2024-10-12 17:55:50,442 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:50,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1271339392, now seen corresponding path program 1 times [2024-10-12 17:55:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640736115] [2024-10-12 17:55:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-12 17:55:51,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:51,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640736115] [2024-10-12 17:55:51,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640736115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112317824] [2024-10-12 17:55:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:51,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:51,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:51,087 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) [2024-10-12 17:55:51,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 17:55:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:51,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:55:51,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-12 17:55:51,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-12 17:55:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112317824] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:51,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:55:51,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2024-10-12 17:55:51,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162713223] [2024-10-12 17:55:51,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:55:51,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:55:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:55:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 17:55:51,934 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-10-12 17:55:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:52,219 INFO L93 Difference]: Finished difference Result 134 states and 176 transitions. [2024-10-12 17:55:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:55:52,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) Word has length 98 [2024-10-12 17:55:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:52,220 INFO L225 Difference]: With dead ends: 134 [2024-10-12 17:55:52,220 INFO L226 Difference]: Without dead ends: 102 [2024-10-12 17:55:52,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-12 17:55:52,221 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:52,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:55:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-12 17:55:52,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-10-12 17:55:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.316831683168317) internal successors, (133), 101 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) [2024-10-12 17:55:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 133 transitions. [2024-10-12 17:55:52,226 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 133 transitions. Word has length 98 [2024-10-12 17:55:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:52,226 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 133 transitions. [2024-10-12 17:55:52,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 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) [2024-10-12 17:55:52,227 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 133 transitions. [2024-10-12 17:55:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-12 17:55:52,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:52,227 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:52,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 17:55:52,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-12 17:55:52,428 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:52,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1169731075, now seen corresponding path program 1 times [2024-10-12 17:55:52,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:52,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438003580] [2024-10-12 17:55:52,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:52,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-12 17:55:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438003580] [2024-10-12 17:55:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438003580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:53,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847181243] [2024-10-12 17:55:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:53,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:53,054 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) [2024-10-12 17:55:53,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 17:55:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:53,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-12 17:55:53,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 17:55:53,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-12 17:55:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847181243] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:55:54,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:55:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-12 17:55:54,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655479473] [2024-10-12 17:55:54,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:55:54,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 17:55:54,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:54,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 17:55:54,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-12 17:55:54,042 INFO L87 Difference]: Start difference. First operand 102 states and 133 transitions. Second operand has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 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) [2024-10-12 17:55:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:55,381 INFO L93 Difference]: Finished difference Result 160 states and 216 transitions. [2024-10-12 17:55:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-12 17:55:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 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 99 [2024-10-12 17:55:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:55,383 INFO L225 Difference]: With dead ends: 160 [2024-10-12 17:55:55,383 INFO L226 Difference]: Without dead ends: 125 [2024-10-12 17:55:55,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-12 17:55:55,384 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 58 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:55,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 987 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 17:55:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-12 17:55:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-10-12 17:55:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.319672131147541) internal successors, (161), 122 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 161 transitions. [2024-10-12 17:55:55,394 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 161 transitions. Word has length 99 [2024-10-12 17:55:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:55,394 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 161 transitions. [2024-10-12 17:55:55,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.388888888888889) internal successors, (133), 18 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) [2024-10-12 17:55:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 161 transitions. [2024-10-12 17:55:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-12 17:55:55,395 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:55,396 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:55,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 17:55:55,596 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,SelfDestructingSolverStorable14 [2024-10-12 17:55:55,597 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:55,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash 517779502, now seen corresponding path program 2 times [2024-10-12 17:55:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:55,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286528514] [2024-10-12 17:55:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:55:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-12 17:55:56,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:55:56,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286528514] [2024-10-12 17:55:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286528514] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:55:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840471146] [2024-10-12 17:55:56,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:55:56,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:55:56,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:55:56,436 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) [2024-10-12 17:55:56,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 17:55:57,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:55:57,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:55:57,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-12 17:55:57,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:55:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-12 17:55:57,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:55:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 17:55:57,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840471146] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:55:57,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:55:57,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-12 17:55:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227738225] [2024-10-12 17:55:57,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:55:57,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-12 17:55:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:55:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-12 17:55:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-12 17:55:57,567 INFO L87 Difference]: Start difference. First operand 123 states and 161 transitions. Second operand has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:55:59,329 INFO L93 Difference]: Finished difference Result 200 states and 270 transitions. [2024-10-12 17:55:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 17:55:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 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 120 [2024-10-12 17:55:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:55:59,330 INFO L225 Difference]: With dead ends: 200 [2024-10-12 17:55:59,330 INFO L226 Difference]: Without dead ends: 147 [2024-10-12 17:55:59,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-12 17:55:59,332 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 81 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 17:55:59,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1308 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 17:55:59,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-12 17:55:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-10-12 17:55:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.321917808219178) internal successors, (193), 146 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) [2024-10-12 17:55:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2024-10-12 17:55:59,338 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 120 [2024-10-12 17:55:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:55:59,339 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2024-10-12 17:55:59,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.625) internal successors, (135), 24 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:55:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2024-10-12 17:55:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-12 17:55:59,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:55:59,340 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:55:59,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 17:55:59,541 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,SelfDestructingSolverStorable15 [2024-10-12 17:55:59,541 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:55:59,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:55:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1934356562, now seen corresponding path program 3 times [2024-10-12 17:55:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:55:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185887350] [2024-10-12 17:55:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:55:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:55:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-10-12 17:56:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:56:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185887350] [2024-10-12 17:56:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185887350] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269064926] [2024-10-12 17:56:00,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 17:56:00,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:00,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:56:00,766 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) [2024-10-12 17:56:00,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 17:56:01,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 17:56:01,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:56:01,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 2574 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 17:56:01,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:56:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-10-12 17:56:01,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:56:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-12 17:56:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269064926] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:01,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:56:01,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 5] total 22 [2024-10-12 17:56:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92334715] [2024-10-12 17:56:01,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:56:01,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:56:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:56:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:56:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-12 17:56:01,660 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-10-12 17:56:01,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:56:01,885 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2024-10-12 17:56:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:56:01,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) Word has length 144 [2024-10-12 17:56:01,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:56:01,886 INFO L225 Difference]: With dead ends: 158 [2024-10-12 17:56:01,886 INFO L226 Difference]: Without dead ends: 148 [2024-10-12 17:56:01,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-10-12 17:56:01,890 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 11 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:56:01,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:56:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-12 17:56:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-10-12 17:56:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.3197278911564625) internal successors, (194), 147 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 194 transitions. [2024-10-12 17:56:01,897 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 194 transitions. Word has length 144 [2024-10-12 17:56:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:56:01,898 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 194 transitions. [2024-10-12 17:56:01,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2024-10-12 17:56:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 194 transitions. [2024-10-12 17:56:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-12 17:56:01,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:56:01,899 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:56:01,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-12 17:56:02,099 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,SelfDestructingSolverStorable16 [2024-10-12 17:56:02,099 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:56:02,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:56:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash -201194635, now seen corresponding path program 1 times [2024-10-12 17:56:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:56:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887632244] [2024-10-12 17:56:02,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:02,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:56:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-10-12 17:56:03,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:56:03,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887632244] [2024-10-12 17:56:03,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887632244] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:03,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290821347] [2024-10-12 17:56:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:03,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:03,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:56:03,248 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) [2024-10-12 17:56:03,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 17:56:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:04,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:56:04,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:56:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-10-12 17:56:04,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:56:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-10-12 17:56:04,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290821347] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:04,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 17:56:04,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17, 6] total 23 [2024-10-12 17:56:04,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341031691] [2024-10-12 17:56:04,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:56:04,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:56:04,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:56:04,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:56:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-12 17:56:04,251 INFO L87 Difference]: Start difference. First operand 148 states and 194 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-10-12 17:56:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:56:04,499 INFO L93 Difference]: Finished difference Result 160 states and 209 transitions. [2024-10-12 17:56:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:56:04,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) Word has length 147 [2024-10-12 17:56:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:56:04,501 INFO L225 Difference]: With dead ends: 160 [2024-10-12 17:56:04,501 INFO L226 Difference]: Without dead ends: 149 [2024-10-12 17:56:04,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-10-12 17:56:04,502 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 17:56:04,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 232 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 17:56:04,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-10-12 17:56:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-10-12 17:56:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2024-10-12 17:56:04,511 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 147 [2024-10-12 17:56:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:56:04,512 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2024-10-12 17:56:04,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-10-12 17:56:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2024-10-12 17:56:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-12 17:56:04,513 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:56:04,513 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:56:04,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-12 17:56:04,713 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,SelfDestructingSolverStorable17 [2024-10-12 17:56:04,714 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:56:04,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:56:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1434118105, now seen corresponding path program 1 times [2024-10-12 17:56:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:56:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851822243] [2024-10-12 17:56:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:56:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-12 17:56:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:56:05,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851822243] [2024-10-12 17:56:05,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851822243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:05,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018457955] [2024-10-12 17:56:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:05,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:56:05,828 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) [2024-10-12 17:56:05,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 17:56:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:06,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 17:56:06,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:56:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 17:56:06,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:56:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-10-12 17:56:07,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018457955] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:56:07,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:56:07,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24, 13] total 39 [2024-10-12 17:56:07,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625654274] [2024-10-12 17:56:07,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:56:07,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-12 17:56:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:56:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-12 17:56:07,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2024-10-12 17:56:07,309 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:56:12,323 INFO L93 Difference]: Finished difference Result 245 states and 334 transitions. [2024-10-12 17:56:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-12 17:56:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 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 148 [2024-10-12 17:56:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:56:12,325 INFO L225 Difference]: With dead ends: 245 [2024-10-12 17:56:12,325 INFO L226 Difference]: Without dead ends: 190 [2024-10-12 17:56:12,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=450, Invalid=1902, Unknown=0, NotChecked=0, Total=2352 [2024-10-12 17:56:12,327 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 192 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1940 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 17:56:12,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1863 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1940 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 17:56:12,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-10-12 17:56:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2024-10-12 17:56:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.320855614973262) internal successors, (247), 187 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-10-12 17:56:12,334 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 148 [2024-10-12 17:56:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:56:12,335 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-10-12 17:56:12,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.128205128205129) internal successors, (200), 39 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-10-12 17:56:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-12 17:56:12,336 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:56:12,336 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:56:12,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-12 17:56:12,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:12,537 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:56:12,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:56:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1320323566, now seen corresponding path program 2 times [2024-10-12 17:56:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:56:12,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219690519] [2024-10-12 17:56:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:56:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-12 17:56:13,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:56:13,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219690519] [2024-10-12 17:56:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219690519] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318648597] [2024-10-12 17:56:13,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 17:56:13,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:13,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:56:13,751 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) [2024-10-12 17:56:13,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 17:56:14,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 17:56:14,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:56:14,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 3196 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-12 17:56:14,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:56:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2024-10-12 17:56:14,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:56:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 322 proven. 660 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 17:56:15,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318648597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:56:15,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:56:15,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 34] total 51 [2024-10-12 17:56:15,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82169245] [2024-10-12 17:56:15,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:56:15,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-12 17:56:15,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:56:15,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-12 17:56:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2163, Unknown=0, NotChecked=0, Total=2550 [2024-10-12 17:56:15,939 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:56:31,866 INFO L93 Difference]: Finished difference Result 330 states and 451 transitions. [2024-10-12 17:56:31,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-12 17:56:31,866 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 0 states have call successors, (0), 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 187 [2024-10-12 17:56:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:56:31,867 INFO L225 Difference]: With dead ends: 330 [2024-10-12 17:56:31,867 INFO L226 Difference]: Without dead ends: 239 [2024-10-12 17:56:31,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=912, Invalid=3378, Unknown=0, NotChecked=0, Total=4290 [2024-10-12 17:56:31,869 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 219 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:56:31,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 3005 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-12 17:56:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-12 17:56:31,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-10-12 17:56:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.3235294117647058) internal successors, (315), 238 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 315 transitions. [2024-10-12 17:56:31,879 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 315 transitions. Word has length 187 [2024-10-12 17:56:31,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:56:31,879 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 315 transitions. [2024-10-12 17:56:31,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.313725490196078) internal successors, (220), 51 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 315 transitions. [2024-10-12 17:56:31,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-12 17:56:31,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:56:31,881 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:56:31,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-12 17:56:32,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:32,081 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:56:32,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:56:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1558131463, now seen corresponding path program 3 times [2024-10-12 17:56:32,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:56:32,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674933584] [2024-10-12 17:56:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:32,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:56:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2024-10-12 17:56:33,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:56:33,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674933584] [2024-10-12 17:56:33,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674933584] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537687581] [2024-10-12 17:56:33,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 17:56:33,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:56:33,783 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) [2024-10-12 17:56:33,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 17:56:34,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-12 17:56:34,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 17:56:34,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 17:56:34,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:56:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2024-10-12 17:56:34,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 17:56:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537687581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 17:56:34,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 17:56:34,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [25] total 27 [2024-10-12 17:56:34,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193868217] [2024-10-12 17:56:34,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 17:56:34,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 17:56:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:56:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 17:56:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-10-12 17:56:34,822 INFO L87 Difference]: Start difference. First operand 239 states and 315 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2024-10-12 17:56:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:56:35,168 INFO L93 Difference]: Finished difference Result 435 states and 576 transitions. [2024-10-12 17:56:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 17:56:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) Word has length 238 [2024-10-12 17:56:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:56:35,170 INFO L225 Difference]: With dead ends: 435 [2024-10-12 17:56:35,170 INFO L226 Difference]: Without dead ends: 240 [2024-10-12 17:56:35,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2024-10-12 17:56:35,172 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 7 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 17:56:35,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 230 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 17:56:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-10-12 17:56:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-10-12 17:56:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3221757322175731) internal successors, (316), 239 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 316 transitions. [2024-10-12 17:56:35,181 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 316 transitions. Word has length 238 [2024-10-12 17:56:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:56:35,182 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 316 transitions. [2024-10-12 17:56:35,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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) [2024-10-12 17:56:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 316 transitions. [2024-10-12 17:56:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-10-12 17:56:35,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:56:35,183 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:56:35,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 17:56:35,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:35,384 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:56:35,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:56:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1112609847, now seen corresponding path program 1 times [2024-10-12 17:56:35,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:56:35,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521975230] [2024-10-12 17:56:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:35,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:56:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-12 17:56:37,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 17:56:37,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521975230] [2024-10-12 17:56:37,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521975230] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 17:56:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369232249] [2024-10-12 17:56:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:37,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:37,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 17:56:37,148 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) [2024-10-12 17:56:37,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 17:56:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 17:56:38,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 3437 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-10-12 17:56:38,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 17:56:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 2100 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-12 17:56:38,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 17:56:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 1529 trivial. 0 not checked. [2024-10-12 17:56:40,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369232249] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 17:56:40,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 17:56:40,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 48, 25] total 72 [2024-10-12 17:56:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393988427] [2024-10-12 17:56:40,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 17:56:40,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-12 17:56:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 17:56:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-12 17:56:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=4500, Unknown=0, NotChecked=0, Total=5112 [2024-10-12 17:56:40,094 INFO L87 Difference]: Start difference. First operand 240 states and 316 transitions. Second operand has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 17:56:47,532 INFO L93 Difference]: Finished difference Result 284 states and 382 transitions. [2024-10-12 17:56:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-12 17:56:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 0 states have call successors, (0), 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 239 [2024-10-12 17:56:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 17:56:47,534 INFO L225 Difference]: With dead ends: 284 [2024-10-12 17:56:47,534 INFO L226 Difference]: Without dead ends: 270 [2024-10-12 17:56:47,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=892, Invalid=5428, Unknown=0, NotChecked=0, Total=6320 [2024-10-12 17:56:47,536 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 407 mSDsluCounter, 5346 mSDsCounter, 0 mSdLazyCounter, 6846 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 6847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-10-12 17:56:47,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 5466 Invalid, 6847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6846 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-10-12 17:56:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-10-12 17:56:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2024-10-12 17:56:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.3234200743494424) internal successors, (356), 269 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 356 transitions. [2024-10-12 17:56:47,551 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 356 transitions. Word has length 239 [2024-10-12 17:56:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 17:56:47,551 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 356 transitions. [2024-10-12 17:56:47,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 3.9444444444444446) internal successors, (284), 72 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 17:56:47,552 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 356 transitions. [2024-10-12 17:56:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-12 17:56:47,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 17:56:47,554 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 17:56:47,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 17:56:47,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 17:56:47,755 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 17:56:47,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 17:56:47,755 INFO L85 PathProgramCache]: Analyzing trace with hash -350447209, now seen corresponding path program 2 times [2024-10-12 17:56:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 17:56:47,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067089212] [2024-10-12 17:56:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 17:56:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 17:56:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat