./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_24_safe.c-amalgamation.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_24_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 7355b63333ffdde1894e09cf3af01cb69006a1cd84670c980642a30bce29f453 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 01:01:13,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 01:01:13,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 01:01:13,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 01:01:13,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 01:01:13,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 01:01:13,604 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 01:01:13,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 01:01:13,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 01:01:13,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 01:01:13,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 01:01:13,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 01:01:13,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 01:01:13,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 01:01:13,610 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 01:01:13,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 01:01:13,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 01:01:13,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 01:01:13,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 01:01:13,613 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 01:01:13,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 01:01:13,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 01:01:13,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 01:01:13,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 01:01:13,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 01:01:13,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 01:01:13,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 01:01:13,615 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 01:01:13,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 01:01:13,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 01:01:13,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 01:01:13,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 01:01:13,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:01:13,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 01:01:13,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 01:01:13,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 01:01:13,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 01:01:13,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 01:01:13,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 01:01:13,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 01:01:13,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 01:01:13,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 01:01:13,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7355b63333ffdde1894e09cf3af01cb69006a1cd84670c980642a30bce29f453 [2024-10-14 01:01:13,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 01:01:13,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 01:01:13,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 01:01:13,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 01:01:13,902 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 01:01:13,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_24_safe.c-amalgamation.i [2024-10-14 01:01:15,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 01:01:15,802 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 01:01:15,803 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_24_safe.c-amalgamation.i [2024-10-14 01:01:15,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02687a9bc/73f0e93503f34eefb314099dea6f825a/FLAGaf9ba82f1 [2024-10-14 01:01:15,852 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02687a9bc/73f0e93503f34eefb314099dea6f825a [2024-10-14 01:01:15,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 01:01:15,857 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 01:01:15,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 01:01:15,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 01:01:15,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 01:01:15,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:01:15" (1/1) ... [2024-10-14 01:01:15,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42147b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:15, skipping insertion in model container [2024-10-14 01:01:15,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:01:15" (1/1) ... [2024-10-14 01:01:15,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 01:01:16,622 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_24_safe.c-amalgamation.i[63698,63711] [2024-10-14 01:01:16,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:01:16,953 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 01:01:17,062 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/neural-networks/cartpole_24_safe.c-amalgamation.i[63698,63711] [2024-10-14 01:01:17,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 01:01:17,497 INFO L204 MainTranslator]: Completed translation [2024-10-14 01:01:17,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17 WrapperNode [2024-10-14 01:01:17,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 01:01:17,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 01:01:17,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 01:01:17,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 01:01:17,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:17,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:17,811 INFO L138 Inliner]: procedures = 620, calls = 4746, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 5014 [2024-10-14 01:01:17,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 01:01:17,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 01:01:17,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 01:01:17,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 01:01:17,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:17,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:17,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,009 INFO L175 MemorySlicer]: Split 4721 memory accesses to 12 slices as follows [2, 7, 257, 65, 4097, 65, 129, 3, 10, 13, 70, 3]. 87 percent of accesses are in the largest equivalence class. The 4687 initializations are split as follows [2, 7, 256, 64, 4096, 64, 128, 2, 4, 0, 64, 0]. The 10 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 3, 4, 2, 1]. [2024-10-14 01:01:18,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 01:01:18,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 01:01:18,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 01:01:18,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 01:01:18,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (1/1) ... [2024-10-14 01:01:18,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 01:01:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:18,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 01:01:18,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 01:01:18,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 01:01:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 01:01:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 01:01:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 01:01:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 01:01:18,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-10-14 01:01:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-10-14 01:01:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-10-14 01:01:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-10-14 01:01:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2024-10-14 01:01:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2024-10-14 01:01:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2024-10-14 01:01:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 01:01:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 01:01:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 01:01:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 01:01:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 01:01:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 01:01:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2024-10-14 01:01:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2024-10-14 01:01:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2024-10-14 01:01:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2024-10-14 01:01:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2024-10-14 01:01:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2024-10-14 01:01:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2024-10-14 01:01:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-14 01:01:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-14 01:01:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-14 01:01:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-14 01:01:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2024-10-14 01:01:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 01:01:18,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 01:01:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 01:01:18,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 01:01:18,631 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 01:01:18,634 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 01:01:24,519 INFO L? ?]: Removed 134 outVars from TransFormulas that were not future-live. [2024-10-14 01:01:24,519 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 01:01:24,839 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 01:01:24,840 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-14 01:01:24,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:01:24 BoogieIcfgContainer [2024-10-14 01:01:24,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 01:01:24,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 01:01:24,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 01:01:24,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 01:01:24,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:01:15" (1/3) ... [2024-10-14 01:01:24,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e004d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:01:24, skipping insertion in model container [2024-10-14 01:01:24,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:01:17" (2/3) ... [2024-10-14 01:01:24,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e004d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:01:24, skipping insertion in model container [2024-10-14 01:01:24,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:01:24" (3/3) ... [2024-10-14 01:01:24,850 INFO L112 eAbstractionObserver]: Analyzing ICFG cartpole_24_safe.c-amalgamation.i [2024-10-14 01:01:24,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 01:01:24,869 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 01:01:24,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 01:01:24,949 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;@4ab039a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 01:01:24,950 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 01:01:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:01:24,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:24,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:24,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:24,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -531373804, now seen corresponding path program 1 times [2024-10-14 01:01:24,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:24,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246262788] [2024-10-14 01:01:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:01:26,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246262788] [2024-10-14 01:01:26,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246262788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:01:26,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:01:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 01:01:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149528471] [2024-10-14 01:01:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:26,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 01:01:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 01:01:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:01:26,062 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.8181818181818181) internal successors, (80), 45 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:26,348 INFO L93 Difference]: Finished difference Result 89 states and 155 transitions. [2024-10-14 01:01:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 01:01:26,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-14 01:01:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:26,358 INFO L225 Difference]: With dead ends: 89 [2024-10-14 01:01:26,358 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 01:01:26,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 01:01:26,366 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:26,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 01:01:26,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-14 01:01:26,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 43 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:26,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2024-10-14 01:01:26,397 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 27 [2024-10-14 01:01:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:26,397 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2024-10-14 01:01:26,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2024-10-14 01:01:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:01:26,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:26,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:26,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 01:01:26,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:26,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:26,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1087110762, now seen corresponding path program 1 times [2024-10-14 01:01:26,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:26,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050462631] [2024-10-14 01:01:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:26,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:01:27,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050462631] [2024-10-14 01:01:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050462631] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:01:27,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:01:27,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:01:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110448427] [2024-10-14 01:01:27,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:27,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:01:27,140 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:27,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:27,431 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2024-10-14 01:01:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:27,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-14 01:01:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:27,433 INFO L225 Difference]: With dead ends: 80 [2024-10-14 01:01:27,433 INFO L226 Difference]: Without dead ends: 44 [2024-10-14 01:01:27,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:01:27,435 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:27,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-10-14 01:01:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-10-14 01:01:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 43 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2024-10-14 01:01:27,441 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2024-10-14 01:01:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:27,441 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2024-10-14 01:01:27,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2024-10-14 01:01:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 01:01:27,443 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:27,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:27,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 01:01:27,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:27,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash -269462312, now seen corresponding path program 1 times [2024-10-14 01:01:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852959007] [2024-10-14 01:01:27,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:01:28,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852959007] [2024-10-14 01:01:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852959007] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:01:28,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 01:01:28,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 01:01:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509745587] [2024-10-14 01:01:28,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:28,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:28,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:28,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:01:28,487 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:28,767 INFO L93 Difference]: Finished difference Result 75 states and 104 transitions. [2024-10-14 01:01:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:28,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-10-14 01:01:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:28,768 INFO L225 Difference]: With dead ends: 75 [2024-10-14 01:01:28,769 INFO L226 Difference]: Without dead ends: 45 [2024-10-14 01:01:28,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 01:01:28,772 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:28,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-14 01:01:28,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-10-14 01:01:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2024-10-14 01:01:28,783 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 27 [2024-10-14 01:01:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:28,784 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2024-10-14 01:01:28,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2024-10-14 01:01:28,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-14 01:01:28,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:28,785 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:28,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 01:01:28,785 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:28,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1144208086, now seen corresponding path program 1 times [2024-10-14 01:01:28,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:28,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457511140] [2024-10-14 01:01:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:01:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457511140] [2024-10-14 01:01:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457511140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170065591] [2024-10-14 01:01:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:29,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:29,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:29,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:29,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 01:01:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:31,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 5239 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:01:31,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 01:01:31,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:01:31,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170065591] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:31,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:01:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523351923] [2024-10-14 01:01:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:31,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:01:31,306 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:31,634 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-10-14 01:01:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:31,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-14 01:01:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:31,636 INFO L225 Difference]: With dead ends: 66 [2024-10-14 01:01:31,636 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 01:01:31,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:01:31,637 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:31,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 01:01:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 01:01:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2024-10-14 01:01:31,650 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 28 [2024-10-14 01:01:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:31,650 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2024-10-14 01:01:31,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2024-10-14 01:01:31,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-14 01:01:31,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:31,653 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:31,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 01:01:31,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:31,854 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:31,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash -372313272, now seen corresponding path program 1 times [2024-10-14 01:01:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359933395] [2024-10-14 01:01:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:01:32,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:32,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359933395] [2024-10-14 01:01:32,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359933395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:32,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374705849] [2024-10-14 01:01:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:32,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:32,887 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:32,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 01:01:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:34,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 5257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 01:01:34,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 01:01:34,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:01:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374705849] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:34,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:34,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:01:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963096249] [2024-10-14 01:01:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:34,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:34,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:01:34,111 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:34,337 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2024-10-14 01:01:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-10-14 01:01:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:34,339 INFO L225 Difference]: With dead ends: 57 [2024-10-14 01:01:34,339 INFO L226 Difference]: Without dead ends: 47 [2024-10-14 01:01:34,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:01:34,340 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:34,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-14 01:01:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-14 01:01:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2024-10-14 01:01:34,345 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2024-10-14 01:01:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:34,345 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2024-10-14 01:01:34,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2024-10-14 01:01:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-14 01:01:34,347 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:34,347 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:34,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 01:01:34,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:34,548 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:34,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:34,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2044304526, now seen corresponding path program 1 times [2024-10-14 01:01:34,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009521134] [2024-10-14 01:01:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:34,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:01:35,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009521134] [2024-10-14 01:01:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009521134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742233628] [2024-10-14 01:01:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:35,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:35,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:35,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:35,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 01:01:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:36,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 5275 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:01:36,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 01:01:36,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:01:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742233628] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:36,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:36,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-10-14 01:01:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578962331] [2024-10-14 01:01:36,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:36,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:36,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:01:36,609 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:36,811 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2024-10-14 01:01:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-14 01:01:36,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:36,812 INFO L225 Difference]: With dead ends: 74 [2024-10-14 01:01:36,812 INFO L226 Difference]: Without dead ends: 48 [2024-10-14 01:01:36,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 01:01:36,813 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:36,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-14 01:01:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-14 01:01:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 47 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2024-10-14 01:01:36,818 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 34 [2024-10-14 01:01:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:36,818 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2024-10-14 01:01:36,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2024-10-14 01:01:36,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 01:01:36,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:36,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:36,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 01:01:37,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:37,021 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:37,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash -359810836, now seen corresponding path program 1 times [2024-10-14 01:01:37,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:37,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833756272] [2024-10-14 01:01:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:01:37,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:37,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833756272] [2024-10-14 01:01:37,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833756272] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:37,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462534904] [2024-10-14 01:01:37,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:37,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:37,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:37,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:37,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 01:01:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:38,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 5281 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:01:38,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:01:38,922 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:01:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462534904] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:38,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:38,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:01:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75794182] [2024-10-14 01:01:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:38,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:38,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:01:38,948 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:39,208 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2024-10-14 01:01:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:39,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-14 01:01:39,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:39,210 INFO L225 Difference]: With dead ends: 64 [2024-10-14 01:01:39,210 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 01:01:39,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:01:39,211 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:39,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 01:01:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-14 01:01:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2024-10-14 01:01:39,222 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 37 [2024-10-14 01:01:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:39,223 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2024-10-14 01:01:39,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2024-10-14 01:01:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-14 01:01:39,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:39,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:39,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 01:01:39,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:39,426 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:39,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:39,427 INFO L85 PathProgramCache]: Analyzing trace with hash 242160194, now seen corresponding path program 1 times [2024-10-14 01:01:39,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:39,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533049352] [2024-10-14 01:01:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:39,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:01:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533049352] [2024-10-14 01:01:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533049352] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108718209] [2024-10-14 01:01:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:40,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:40,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:40,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:40,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 01:01:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:41,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 5287 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:01:41,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 01:01:41,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:01:41,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108718209] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:41,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:41,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2024-10-14 01:01:41,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365747091] [2024-10-14 01:01:41,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:41,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 01:01:41,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 01:01:41,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:01:41,444 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:41,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:41,628 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2024-10-14 01:01:41,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 01:01:41,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-14 01:01:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:41,631 INFO L225 Difference]: With dead ends: 54 [2024-10-14 01:01:41,631 INFO L226 Difference]: Without dead ends: 50 [2024-10-14 01:01:41,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 01:01:41,632 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:41,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:41,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-14 01:01:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-14 01:01:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2024-10-14 01:01:41,639 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 40 [2024-10-14 01:01:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:41,640 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2024-10-14 01:01:41,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2024-10-14 01:01:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-14 01:01:41,641 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:41,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:41,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 01:01:41,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:41,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:41,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1371144433, now seen corresponding path program 1 times [2024-10-14 01:01:41,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:41,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391504511] [2024-10-14 01:01:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:41,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:01:42,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391504511] [2024-10-14 01:01:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391504511] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006795077] [2024-10-14 01:01:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:42,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:42,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:42,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 01:01:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:43,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-14 01:01:43,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 01:01:43,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:01:43,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006795077] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:43,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:43,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 8] total 12 [2024-10-14 01:01:43,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360475919] [2024-10-14 01:01:43,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:43,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:01:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:01:43,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:01:43,655 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:43,871 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2024-10-14 01:01:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:01:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-14 01:01:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:43,872 INFO L225 Difference]: With dead ends: 60 [2024-10-14 01:01:43,872 INFO L226 Difference]: Without dead ends: 51 [2024-10-14 01:01:43,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:01:43,873 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:43,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-14 01:01:43,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-14 01:01:43,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:43,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-10-14 01:01:43,878 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 43 [2024-10-14 01:01:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:43,879 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-10-14 01:01:43,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-10-14 01:01:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-14 01:01:43,880 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:43,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:43,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 01:01:44,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:44,081 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:44,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:44,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1175858717, now seen corresponding path program 1 times [2024-10-14 01:01:44,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:44,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979901426] [2024-10-14 01:01:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:01:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979901426] [2024-10-14 01:01:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979901426] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102079845] [2024-10-14 01:01:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:44,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:44,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:44,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:44,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 01:01:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:45,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 5307 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 01:01:45,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 01:01:45,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 01:01:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102079845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:01:45,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:01:45,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-14 01:01:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456942852] [2024-10-14 01:01:45,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:01:45,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 01:01:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:45,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 01:01:45,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:01:45,675 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:45,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:45,995 INFO L93 Difference]: Finished difference Result 97 states and 132 transitions. [2024-10-14 01:01:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 01:01:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-10-14 01:01:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:45,995 INFO L225 Difference]: With dead ends: 97 [2024-10-14 01:01:45,996 INFO L226 Difference]: Without dead ends: 61 [2024-10-14 01:01:45,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 01:01:45,996 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:45,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 230 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-10-14 01:01:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-10-14 01:01:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 60 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2024-10-14 01:01:46,002 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 46 [2024-10-14 01:01:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:46,002 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2024-10-14 01:01:46,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2024-10-14 01:01:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 01:01:46,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:46,008 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:46,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 01:01:46,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:46,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:46,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:46,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1861807109, now seen corresponding path program 2 times [2024-10-14 01:01:46,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:46,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330188501] [2024-10-14 01:01:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:46,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 01:01:46,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:46,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330188501] [2024-10-14 01:01:46,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330188501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:46,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003151598] [2024-10-14 01:01:46,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:01:46,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:46,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:46,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:46,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 01:01:47,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:01:47,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:01:47,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 5372 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:01:47,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 01:01:47,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 01:01:47,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003151598] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:01:47,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:01:47,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2024-10-14 01:01:47,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54336769] [2024-10-14 01:01:47,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:01:47,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 01:01:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:47,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 01:01:47,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 01:01:47,973 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:48,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:48,267 INFO L93 Difference]: Finished difference Result 116 states and 157 transitions. [2024-10-14 01:01:48,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 01:01:48,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-14 01:01:48,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:48,269 INFO L225 Difference]: With dead ends: 116 [2024-10-14 01:01:48,269 INFO L226 Difference]: Without dead ends: 71 [2024-10-14 01:01:48,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:01:48,270 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:48,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 193 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 01:01:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-14 01:01:48,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-14 01:01:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2024-10-14 01:01:48,279 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 56 [2024-10-14 01:01:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:48,280 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2024-10-14 01:01:48,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2024-10-14 01:01:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 01:01:48,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:48,281 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:48,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 01:01:48,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 01:01:48,482 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:48,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:48,483 INFO L85 PathProgramCache]: Analyzing trace with hash -78359747, now seen corresponding path program 3 times [2024-10-14 01:01:48,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:48,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854561103] [2024-10-14 01:01:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 01:01:49,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:49,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854561103] [2024-10-14 01:01:49,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854561103] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:49,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110924298] [2024-10-14 01:01:49,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:01:49,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:49,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:49,507 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:49,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 01:01:50,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 01:01:50,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:01:50,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 5304 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 01:01:50,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 01:01:50,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 01:01:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110924298] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:50,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 10 [2024-10-14 01:01:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890836477] [2024-10-14 01:01:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:50,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:01:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:50,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:01:50,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:01:50,736 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:50,939 INFO L93 Difference]: Finished difference Result 103 states and 136 transitions. [2024-10-14 01:01:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:01:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-14 01:01:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:50,940 INFO L225 Difference]: With dead ends: 103 [2024-10-14 01:01:50,940 INFO L226 Difference]: Without dead ends: 72 [2024-10-14 01:01:50,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-14 01:01:50,941 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:50,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-14 01:01:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-14 01:01:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.323943661971831) internal successors, (94), 71 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2024-10-14 01:01:50,947 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 66 [2024-10-14 01:01:50,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:50,947 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2024-10-14 01:01:50,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2024-10-14 01:01:50,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-14 01:01:50,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:50,949 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:50,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 01:01:51,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:51,149 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:51,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 52370250, now seen corresponding path program 1 times [2024-10-14 01:01:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:51,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316623012] [2024-10-14 01:01:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:51,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-14 01:01:51,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316623012] [2024-10-14 01:01:51,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316623012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:51,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616031271] [2024-10-14 01:01:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:51,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:52,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:52,001 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:52,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 01:01:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:52,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 5451 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:01:52,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 01:01:53,005 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 01:01:53,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616031271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 01:01:53,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 01:01:53,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-10-14 01:01:53,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517339910] [2024-10-14 01:01:53,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:53,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:01:53,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:53,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:01:53,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:01:53,006 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:53,185 INFO L93 Difference]: Finished difference Result 128 states and 170 transitions. [2024-10-14 01:01:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:01:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-14 01:01:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:53,186 INFO L225 Difference]: With dead ends: 128 [2024-10-14 01:01:53,186 INFO L226 Difference]: Without dead ends: 75 [2024-10-14 01:01:53,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 01:01:53,187 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:53,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-14 01:01:53,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2024-10-14 01:01:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 72 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2024-10-14 01:01:53,192 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 69 [2024-10-14 01:01:53,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:53,193 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2024-10-14 01:01:53,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2024-10-14 01:01:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-14 01:01:53,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:53,194 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:53,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 01:01:53,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-14 01:01:53,394 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:53,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:53,395 INFO L85 PathProgramCache]: Analyzing trace with hash -997341362, now seen corresponding path program 1 times [2024-10-14 01:01:53,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:53,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869187282] [2024-10-14 01:01:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:53,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 01:01:54,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:54,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869187282] [2024-10-14 01:01:54,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869187282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:54,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200603800] [2024-10-14 01:01:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:54,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:54,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:54,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:54,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 01:01:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:55,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 5465 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:01:55,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-14 01:01:55,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 01:01:55,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200603800] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:55,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:55,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-10-14 01:01:55,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973140465] [2024-10-14 01:01:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:55,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:01:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:55,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:01:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:01:55,369 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:55,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:55,579 INFO L93 Difference]: Finished difference Result 106 states and 139 transitions. [2024-10-14 01:01:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:01:55,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-10-14 01:01:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:55,581 INFO L225 Difference]: With dead ends: 106 [2024-10-14 01:01:55,581 INFO L226 Difference]: Without dead ends: 74 [2024-10-14 01:01:55,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:01:55,582 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:55,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-14 01:01:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-10-14 01:01:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 73 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2024-10-14 01:01:55,594 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 72 [2024-10-14 01:01:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:55,597 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2024-10-14 01:01:55,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2024-10-14 01:01:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-14 01:01:55,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:55,598 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:55,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 01:01:55,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 01:01:55,799 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:55,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:55,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1345682845, now seen corresponding path program 1 times [2024-10-14 01:01:55,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:55,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391399433] [2024-10-14 01:01:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:55,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-14 01:01:56,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:56,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391399433] [2024-10-14 01:01:56,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391399433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976715316] [2024-10-14 01:01:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:56,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:56,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:56,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 01:01:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:57,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 5468 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 01:01:57,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:01:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 01:01:57,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:01:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-14 01:01:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976715316] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:57,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 01:01:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2024-10-14 01:01:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548765612] [2024-10-14 01:01:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 01:01:57,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 01:01:57,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:01:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 01:01:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:01:57,801 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:57,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:01:57,988 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2024-10-14 01:01:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 01:01:57,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-14 01:01:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:01:57,989 INFO L225 Difference]: With dead ends: 85 [2024-10-14 01:01:57,990 INFO L226 Difference]: Without dead ends: 75 [2024-10-14 01:01:57,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 01:01:57,990 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 01:01:57,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 01:01:57,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-14 01:01:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-10-14 01:01:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 74 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2024-10-14 01:01:57,995 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 73 [2024-10-14 01:01:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:01:57,995 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2024-10-14 01:01:57,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:01:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2024-10-14 01:01:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-14 01:01:57,996 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:01:57,996 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:01:58,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-14 01:01:58,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 01:01:58,197 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:01:58,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:01:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash 416942370, now seen corresponding path program 1 times [2024-10-14 01:01:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:01:58,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256162644] [2024-10-14 01:01:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:01:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:01:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-14 01:01:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:01:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256162644] [2024-10-14 01:01:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256162644] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:01:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857361672] [2024-10-14 01:01:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:01:58,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:01:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:01:58,955 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:01:58,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 01:02:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:00,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 5471 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 01:02:00,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:02:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 01:02:00,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:02:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 01:02:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857361672] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:02:00,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:02:00,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 7] total 13 [2024-10-14 01:02:00,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446003536] [2024-10-14 01:02:00,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:02:00,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 01:02:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:02:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 01:02:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-14 01:02:00,325 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:00,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:02:00,886 INFO L93 Difference]: Finished difference Result 138 states and 182 transitions. [2024-10-14 01:02:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 01:02:00,887 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-14 01:02:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:02:00,887 INFO L225 Difference]: With dead ends: 138 [2024-10-14 01:02:00,887 INFO L226 Difference]: Without dead ends: 80 [2024-10-14 01:02:00,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-14 01:02:00,888 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 32 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:02:00,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 365 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 01:02:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-14 01:02:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-14 01:02:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2024-10-14 01:02:00,896 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 74 [2024-10-14 01:02:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:02:00,896 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2024-10-14 01:02:00,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2024-10-14 01:02:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-14 01:02:00,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:02:00,898 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:02:00,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 01:02:01,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 01:02:01,098 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:02:01,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:02:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash 297711965, now seen corresponding path program 1 times [2024-10-14 01:02:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:02:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699289092] [2024-10-14 01:02:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:02:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:02:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 01:02:02,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:02:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699289092] [2024-10-14 01:02:02,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699289092] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:02:02,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468647700] [2024-10-14 01:02:02,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:02:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:02,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:02:02,013 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:02:02,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 01:02:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:03,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 5503 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 01:02:03,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:02:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 01:02:03,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:02:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 01:02:03,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468647700] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:02:03,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:02:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 7] total 18 [2024-10-14 01:02:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550269077] [2024-10-14 01:02:03,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:02:03,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 01:02:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:02:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 01:02:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-10-14 01:02:03,311 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:02:03,935 INFO L93 Difference]: Finished difference Result 139 states and 187 transitions. [2024-10-14 01:02:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 01:02:03,936 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-10-14 01:02:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:02:03,937 INFO L225 Difference]: With dead ends: 139 [2024-10-14 01:02:03,937 INFO L226 Difference]: Without dead ends: 103 [2024-10-14 01:02:03,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-10-14 01:02:03,938 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 56 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 01:02:03,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 324 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 01:02:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-14 01:02:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2024-10-14 01:02:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.31) internal successors, (131), 100 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 131 transitions. [2024-10-14 01:02:03,947 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 131 transitions. Word has length 79 [2024-10-14 01:02:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:02:03,947 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 131 transitions. [2024-10-14 01:02:03,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 131 transitions. [2024-10-14 01:02:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-14 01:02:03,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:02:03,948 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:02:03,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 01:02:04,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:04,149 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:02:04,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:02:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash -152255511, now seen corresponding path program 2 times [2024-10-14 01:02:04,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:02:04,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598364933] [2024-10-14 01:02:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:02:04,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:02:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-14 01:02:05,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:02:05,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598364933] [2024-10-14 01:02:05,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598364933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:02:05,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318427252] [2024-10-14 01:02:05,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 01:02:05,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:05,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:02:05,154 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:02:05,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 01:02:06,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 01:02:06,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:02:06,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 5629 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-14 01:02:06,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:02:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-14 01:02:06,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:02:06,642 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 76 proven. 102 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-14 01:02:06,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318427252] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:02:06,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:02:06,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 16] total 24 [2024-10-14 01:02:06,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166626168] [2024-10-14 01:02:06,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:02:06,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 01:02:06,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:02:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 01:02:06,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-10-14 01:02:06,644 INFO L87 Difference]: Start difference. First operand 101 states and 131 transitions. Second operand has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:07,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:02:07,685 INFO L93 Difference]: Finished difference Result 179 states and 241 transitions. [2024-10-14 01:02:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-14 01:02:07,686 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-10-14 01:02:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:02:07,687 INFO L225 Difference]: With dead ends: 179 [2024-10-14 01:02:07,687 INFO L226 Difference]: Without dead ends: 125 [2024-10-14 01:02:07,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2024-10-14 01:02:07,688 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 67 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:02:07,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 758 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 01:02:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-14 01:02:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-10-14 01:02:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.314516129032258) internal successors, (163), 124 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2024-10-14 01:02:07,697 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 100 [2024-10-14 01:02:07,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:02:07,697 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2024-10-14 01:02:07,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2024-10-14 01:02:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-14 01:02:07,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:02:07,700 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 10, 10, 10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:02:07,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-14 01:02:07,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 01:02:07,900 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:02:07,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:02:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash -398331415, now seen corresponding path program 3 times [2024-10-14 01:02:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:02:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289222585] [2024-10-14 01:02:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:02:07,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:02:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-10-14 01:02:09,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:02:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289222585] [2024-10-14 01:02:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289222585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:02:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082828352] [2024-10-14 01:02:09,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 01:02:09,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:09,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:02:09,584 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:02:09,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 01:02:10,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-14 01:02:10,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:02:10,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 5404 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-14 01:02:10,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:02:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-10-14 01:02:11,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:02:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2024-10-14 01:02:11,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082828352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:02:11,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:02:11,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 6] total 28 [2024-10-14 01:02:11,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226681530] [2024-10-14 01:02:11,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:02:11,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-14 01:02:11,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:02:11,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-14 01:02:11,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-10-14 01:02:11,182 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:12,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:02:12,006 INFO L93 Difference]: Finished difference Result 202 states and 267 transitions. [2024-10-14 01:02:12,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 01:02:12,007 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-10-14 01:02:12,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:02:12,008 INFO L225 Difference]: With dead ends: 202 [2024-10-14 01:02:12,008 INFO L226 Difference]: Without dead ends: 148 [2024-10-14 01:02:12,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2024-10-14 01:02:12,009 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 73 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:02:12,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 605 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-14 01:02:12,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-10-14 01:02:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2024-10-14 01:02:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.316546762589928) internal successors, (183), 139 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2024-10-14 01:02:12,017 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 124 [2024-10-14 01:02:12,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:02:12,018 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2024-10-14 01:02:12,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.964285714285714) internal successors, (139), 28 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2024-10-14 01:02:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-14 01:02:12,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:02:12,019 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 10, 10, 10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:02:12,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 01:02:12,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:12,220 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:02:12,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:02:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1699419376, now seen corresponding path program 4 times [2024-10-14 01:02:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:02:12,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050432053] [2024-10-14 01:02:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:02:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:02:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-10-14 01:02:13,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:02:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050432053] [2024-10-14 01:02:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050432053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:02:13,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124141462] [2024-10-14 01:02:13,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 01:02:13,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:13,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:02:13,797 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:02:13,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 01:02:14,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 01:02:14,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 01:02:14,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 5808 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-14 01:02:14,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 01:02:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-10-14 01:02:15,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 01:02:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2024-10-14 01:02:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124141462] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 01:02:15,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 01:02:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 13] total 40 [2024-10-14 01:02:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568496643] [2024-10-14 01:02:15,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 01:02:15,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-14 01:02:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 01:02:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-14 01:02:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1347, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 01:02:15,590 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand has 40 states, 40 states have (on average 4.4) internal successors, (176), 40 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:19,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 01:02:19,645 INFO L93 Difference]: Finished difference Result 247 states and 337 transitions. [2024-10-14 01:02:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-14 01:02:19,646 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.4) internal successors, (176), 40 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-10-14 01:02:19,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 01:02:19,647 INFO L225 Difference]: With dead ends: 247 [2024-10-14 01:02:19,647 INFO L226 Difference]: Without dead ends: 181 [2024-10-14 01:02:19,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=453, Invalid=1997, Unknown=0, NotChecked=0, Total=2450 [2024-10-14 01:02:19,648 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 186 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 01:02:19,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1749 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 01:02:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-10-14 01:02:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2024-10-14 01:02:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.3202247191011236) internal successors, (235), 178 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 235 transitions. [2024-10-14 01:02:19,658 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 235 transitions. Word has length 131 [2024-10-14 01:02:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 01:02:19,658 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 235 transitions. [2024-10-14 01:02:19,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.4) internal successors, (176), 40 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 01:02:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 235 transitions. [2024-10-14 01:02:19,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-14 01:02:19,659 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 01:02:19,660 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 16, 16, 16, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 01:02:19,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 01:02:19,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:19,860 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 01:02:19,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 01:02:19,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1532647172, now seen corresponding path program 5 times [2024-10-14 01:02:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 01:02:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756185652] [2024-10-14 01:02:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 01:02:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 01:02:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 01:02:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1118 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2024-10-14 01:02:21,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 01:02:21,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756185652] [2024-10-14 01:02:21,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756185652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 01:02:21,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029021591] [2024-10-14 01:02:21,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 01:02:21,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 01:02:21,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 01:02:21,635 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 01:02:21,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process