./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/memory-model/4SB.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/memory-model/4SB.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 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:35:13,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:35:13,979 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:35:13,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:35:13,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:35:14,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:35:14,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:35:14,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:35:14,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:35:14,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:35:14,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:35:14,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:35:14,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:35:14,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:35:14,015 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:35:14,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:35:14,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:35:14,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:35:14,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:35:14,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:35:14,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:35:14,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:35:14,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:35:14,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:35:14,018 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:35:14,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:35:14,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:35:14,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:35:14,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:35:14,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:35:14,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:35:14,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:35:14,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:35:14,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:35:14,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:35:14,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:35:14,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:35:14,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:35:14,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:35:14,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:35:14,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:35:14,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:35:14,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2024-11-18 09:35:14,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:35:14,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:35:14,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:35:14,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:35:14,307 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:35:14,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/4SB.i [2024-11-18 09:35:15,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:35:15,860 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:35:15,861 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i [2024-11-18 09:35:15,869 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c067774/bf9ac6f8cf204a388f1c900b78c358c4/FLAG3ee1b2cea [2024-11-18 09:35:15,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c067774/bf9ac6f8cf204a388f1c900b78c358c4 [2024-11-18 09:35:15,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:35:15,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:35:15,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:35:15,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:35:15,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:35:15,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:15" (1/1) ... [2024-11-18 09:35:15,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414aee6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:15, skipping insertion in model container [2024-11-18 09:35:15,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:35:15" (1/1) ... [2024-11-18 09:35:15,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:35:16,265 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i[21105,21118] [2024-11-18 09:35:16,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:35:16,280 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:35:16,374 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i[21105,21118] [2024-11-18 09:35:16,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:35:16,389 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:35:16,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16 WrapperNode [2024-11-18 09:35:16,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:35:16,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:35:16,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:35:16,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:35:16,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,505 INFO L138 Inliner]: procedures = 27, calls = 680, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1638 [2024-11-18 09:35:16,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:35:16,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:35:16,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:35:16,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:35:16,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,588 INFO L175 MemorySlicer]: Split 488 memory accesses to 16 slices as follows [13, 3, 60, 12, 10, 10, 12, 10, 96, 15, 13, 13, 13, 45, 152, 11]. 31 percent of accesses are in the largest equivalence class. The 36 initializations are split as follows [5, 0, 0, 5, 0, 1, 10, 0, 0, 0, 5, 5, 5, 0, 0, 0]. The 171 writes are split as follows [2, 2, 20, 2, 5, 3, 1, 5, 20, 5, 2, 2, 2, 15, 80, 5]. [2024-11-18 09:35:16,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:35:16,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:35:16,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:35:16,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:35:16,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (1/1) ... [2024-11-18 09:35:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:35:16,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:16,717 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) [2024-11-18 09:35:16,720 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 [2024-11-18 09:35:16,766 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2024-11-18 09:35:16,766 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2024-11-18 09:35:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-18 09:35:16,767 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-18 09:35:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-18 09:35:16,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-18 09:35:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-18 09:35:16,767 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-18 09:35:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-18 09:35:16,767 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-18 09:35:16,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-18 09:35:16,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-18 09:35:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-18 09:35:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:35:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 09:35:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 09:35:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-18 09:35:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-18 09:35:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-18 09:35:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-18 09:35:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:35:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:35:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:35:16,968 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:35:16,970 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:35:18,741 INFO L? ?]: Removed 214 outVars from TransFormulas that were not future-live. [2024-11-18 09:35:18,741 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:35:18,765 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:35:18,765 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-18 09:35:18,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:18 BoogieIcfgContainer [2024-11-18 09:35:18,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:35:18,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:35:18,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:35:18,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:35:18,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:35:15" (1/3) ... [2024-11-18 09:35:18,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73626414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:35:18, skipping insertion in model container [2024-11-18 09:35:18,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:35:16" (2/3) ... [2024-11-18 09:35:18,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73626414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:35:18, skipping insertion in model container [2024-11-18 09:35:18,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:35:18" (3/3) ... [2024-11-18 09:35:18,778 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2024-11-18 09:35:18,793 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:35:18,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:35:18,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:35:18,859 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;@56bd3023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:35:18,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:35:18,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 282 states, 247 states have (on average 1.5789473684210527) internal successors, (390), 252 states have internal predecessors, (390), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 09:35:18,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:18,878 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:18,878 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:18,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash -992657394, now seen corresponding path program 1 times [2024-11-18 09:35:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:18,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548467949] [2024-11-18 09:35:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:18,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 09:35:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548467949] [2024-11-18 09:35:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548467949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:19,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:19,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 09:35:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280191727] [2024-11-18 09:35:19,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:19,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:19,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 09:35:19,528 INFO L87 Difference]: Start difference. First operand has 282 states, 247 states have (on average 1.5789473684210527) internal successors, (390), 252 states have internal predecessors, (390), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:19,599 INFO L93 Difference]: Finished difference Result 562 states and 890 transitions. [2024-11-18 09:35:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-11-18 09:35:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:19,619 INFO L225 Difference]: With dead ends: 562 [2024-11-18 09:35:19,620 INFO L226 Difference]: Without dead ends: 269 [2024-11-18 09:35:19,627 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 [2024-11-18 09:35:19,629 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 1 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:19,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 764 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-18 09:35:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2024-11-18 09:35:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 234 states have (on average 1.311965811965812) internal successors, (307), 238 states have internal predecessors, (307), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 359 transitions. [2024-11-18 09:35:19,677 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 359 transitions. Word has length 74 [2024-11-18 09:35:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:19,677 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 359 transitions. [2024-11-18 09:35:19,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 359 transitions. [2024-11-18 09:35:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 09:35:19,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:19,681 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:19,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:35:19,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:19,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash 456113258, now seen corresponding path program 1 times [2024-11-18 09:35:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143618709] [2024-11-18 09:35:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 09:35:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143618709] [2024-11-18 09:35:20,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143618709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:20,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953685628] [2024-11-18 09:35:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:20,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:20,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:20,134 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) [2024-11-18 09:35:20,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:35:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:20,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:20,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 09:35:20,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953685628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:20,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164374199] [2024-11-18 09:35:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:20,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:20,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:20,649 INFO L87 Difference]: Start difference. First operand 268 states and 359 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:20,695 INFO L93 Difference]: Finished difference Result 530 states and 715 transitions. [2024-11-18 09:35:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-18 09:35:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:20,700 INFO L225 Difference]: With dead ends: 530 [2024-11-18 09:35:20,700 INFO L226 Difference]: Without dead ends: 270 [2024-11-18 09:35:20,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:20,702 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 1 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:20,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:20,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-18 09:35:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2024-11-18 09:35:20,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 235 states have (on average 1.3106382978723403) internal successors, (308), 239 states have internal predecessors, (308), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 360 transitions. [2024-11-18 09:35:20,723 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 360 transitions. Word has length 77 [2024-11-18 09:35:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:20,724 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 360 transitions. [2024-11-18 09:35:20,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:20,724 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 360 transitions. [2024-11-18 09:35:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-18 09:35:20,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:20,730 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:20,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:35:20,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:20,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:20,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1437341938, now seen corresponding path program 1 times [2024-11-18 09:35:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:20,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36273061] [2024-11-18 09:35:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 09:35:21,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36273061] [2024-11-18 09:35:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36273061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631611067] [2024-11-18 09:35:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:21,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:21,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:21,183 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) [2024-11-18 09:35:21,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:35:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:21,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:21,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-18 09:35:21,586 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:21,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631611067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:21,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:21,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322014676] [2024-11-18 09:35:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:21,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:21,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:21,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:21,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:21,588 INFO L87 Difference]: Start difference. First operand 269 states and 360 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:21,622 INFO L93 Difference]: Finished difference Result 517 states and 693 transitions. [2024-11-18 09:35:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 85 [2024-11-18 09:35:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:21,625 INFO L225 Difference]: With dead ends: 517 [2024-11-18 09:35:21,625 INFO L226 Difference]: Without dead ends: 276 [2024-11-18 09:35:21,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:21,626 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 6 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:21,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 702 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:21,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-18 09:35:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2024-11-18 09:35:21,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 236 states have (on average 1.3093220338983051) internal successors, (309), 240 states have internal predecessors, (309), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 361 transitions. [2024-11-18 09:35:21,641 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 361 transitions. Word has length 85 [2024-11-18 09:35:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:21,642 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 361 transitions. [2024-11-18 09:35:21,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 361 transitions. [2024-11-18 09:35:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 09:35:21,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:21,647 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:21,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:35:21,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-18 09:35:21,847 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:21,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1782099748, now seen corresponding path program 1 times [2024-11-18 09:35:21,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:21,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726921940] [2024-11-18 09:35:21,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:21,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 09:35:22,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:22,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726921940] [2024-11-18 09:35:22,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726921940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:22,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459288671] [2024-11-18 09:35:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:22,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:22,136 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) [2024-11-18 09:35:22,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:35:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:22,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:22,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-18 09:35:22,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459288671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:22,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48890] [2024-11-18 09:35:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:22,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:22,560 INFO L87 Difference]: Start difference. First operand 270 states and 361 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:22,586 INFO L93 Difference]: Finished difference Result 510 states and 683 transitions. [2024-11-18 09:35:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:22,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 88 [2024-11-18 09:35:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:22,588 INFO L225 Difference]: With dead ends: 510 [2024-11-18 09:35:22,588 INFO L226 Difference]: Without dead ends: 277 [2024-11-18 09:35:22,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:22,589 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:22,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 705 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-18 09:35:22,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2024-11-18 09:35:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 237 states have (on average 1.3080168776371308) internal successors, (310), 241 states have internal predecessors, (310), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2024-11-18 09:35:22,598 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 88 [2024-11-18 09:35:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:22,598 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2024-11-18 09:35:22,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2024-11-18 09:35:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 09:35:22,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:22,600 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:22,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:22,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:22,804 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2144473698, now seen corresponding path program 1 times [2024-11-18 09:35:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277946350] [2024-11-18 09:35:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:22,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 09:35:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277946350] [2024-11-18 09:35:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277946350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316053868] [2024-11-18 09:35:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:23,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:23,122 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) [2024-11-18 09:35:23,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:35:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:23,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:23,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-18 09:35:23,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:23,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316053868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:23,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:23,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:23,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314685484] [2024-11-18 09:35:23,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:23,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:23,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:23,538 INFO L87 Difference]: Start difference. First operand 271 states and 362 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:23,566 INFO L93 Difference]: Finished difference Result 503 states and 673 transitions. [2024-11-18 09:35:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:23,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 91 [2024-11-18 09:35:23,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:23,568 INFO L225 Difference]: With dead ends: 503 [2024-11-18 09:35:23,568 INFO L226 Difference]: Without dead ends: 278 [2024-11-18 09:35:23,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:23,569 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:23,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 705 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-18 09:35:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 272. [2024-11-18 09:35:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 238 states have (on average 1.3067226890756303) internal successors, (311), 242 states have internal predecessors, (311), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 363 transitions. [2024-11-18 09:35:23,578 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 363 transitions. Word has length 91 [2024-11-18 09:35:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:23,578 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 363 transitions. [2024-11-18 09:35:23,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 363 transitions. [2024-11-18 09:35:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 09:35:23,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:23,580 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:23,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 09:35:23,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:23,781 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:23,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash 686702796, now seen corresponding path program 1 times [2024-11-18 09:35:23,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:23,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850648834] [2024-11-18 09:35:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:23,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-18 09:35:24,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:24,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850648834] [2024-11-18 09:35:24,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850648834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:24,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968271055] [2024-11-18 09:35:24,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:24,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:24,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:24,031 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) [2024-11-18 09:35:24,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:35:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:24,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:24,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-18 09:35:24,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968271055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:24,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:24,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:24,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727763428] [2024-11-18 09:35:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:24,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:24,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:24,513 INFO L87 Difference]: Start difference. First operand 272 states and 363 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:24,540 INFO L93 Difference]: Finished difference Result 492 states and 660 transitions. [2024-11-18 09:35:24,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:24,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 94 [2024-11-18 09:35:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:24,544 INFO L225 Difference]: With dead ends: 492 [2024-11-18 09:35:24,546 INFO L226 Difference]: Without dead ends: 279 [2024-11-18 09:35:24,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:24,547 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:24,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 701 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-18 09:35:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2024-11-18 09:35:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 239 states have (on average 1.3054393305439331) internal successors, (312), 243 states have internal predecessors, (312), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 364 transitions. [2024-11-18 09:35:24,557 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 364 transitions. Word has length 94 [2024-11-18 09:35:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:24,557 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 364 transitions. [2024-11-18 09:35:24,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:35:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 364 transitions. [2024-11-18 09:35:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 09:35:24,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:24,558 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:24,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:24,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:24,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:24,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash -261696558, now seen corresponding path program 1 times [2024-11-18 09:35:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:24,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245228695] [2024-11-18 09:35:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-18 09:35:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245228695] [2024-11-18 09:35:24,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245228695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185444039] [2024-11-18 09:35:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:24,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:24,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:24,991 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) [2024-11-18 09:35:24,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:35:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:25,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:25,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:35:25,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:25,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185444039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:25,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:25,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:25,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046037586] [2024-11-18 09:35:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:25,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:25,409 INFO L87 Difference]: Start difference. First operand 273 states and 364 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:25,513 INFO L93 Difference]: Finished difference Result 341 states and 471 transitions. [2024-11-18 09:35:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 97 [2024-11-18 09:35:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:25,516 INFO L225 Difference]: With dead ends: 341 [2024-11-18 09:35:25,516 INFO L226 Difference]: Without dead ends: 331 [2024-11-18 09:35:25,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:25,517 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 93 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:25,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 623 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-18 09:35:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 274. [2024-11-18 09:35:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 240 states have (on average 1.3041666666666667) internal successors, (313), 244 states have internal predecessors, (313), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2024-11-18 09:35:25,525 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 97 [2024-11-18 09:35:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:25,526 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2024-11-18 09:35:25,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2024-11-18 09:35:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 09:35:25,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:25,527 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:25,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:35:25,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:25,728 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:25,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:25,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1945761786, now seen corresponding path program 1 times [2024-11-18 09:35:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560666655] [2024-11-18 09:35:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:35:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:25,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560666655] [2024-11-18 09:35:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560666655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:25,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465991434] [2024-11-18 09:35:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:25,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:25,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:25,934 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) [2024-11-18 09:35:25,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:35:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:26,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:26,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 09:35:26,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465991434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:26,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171557262] [2024-11-18 09:35:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:26,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:26,405 INFO L87 Difference]: Start difference. First operand 274 states and 365 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:26,416 INFO L93 Difference]: Finished difference Result 342 states and 472 transitions. [2024-11-18 09:35:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:26,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 107 [2024-11-18 09:35:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:26,418 INFO L225 Difference]: With dead ends: 342 [2024-11-18 09:35:26,419 INFO L226 Difference]: Without dead ends: 332 [2024-11-18 09:35:26,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:26,419 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 83 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:26,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-18 09:35:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2024-11-18 09:35:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 297 states have (on average 1.367003367003367) internal successors, (406), 301 states have internal predecessors, (406), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2024-11-18 09:35:26,427 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 107 [2024-11-18 09:35:26,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:26,427 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2024-11-18 09:35:26,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2024-11-18 09:35:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 09:35:26,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:26,428 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:26,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:26,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:26,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:26,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash -815947690, now seen corresponding path program 1 times [2024-11-18 09:35:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856513022] [2024-11-18 09:35:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 09:35:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856513022] [2024-11-18 09:35:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856513022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:26,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581014791] [2024-11-18 09:35:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:26,881 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) [2024-11-18 09:35:26,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:35:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:27,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:27,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 09:35:27,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:27,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581014791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:27,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:27,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:27,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490772414] [2024-11-18 09:35:27,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:27,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:27,413 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:27,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:27,429 INFO L93 Difference]: Finished difference Result 457 states and 659 transitions. [2024-11-18 09:35:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:27,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 113 [2024-11-18 09:35:27,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:27,432 INFO L225 Difference]: With dead ends: 457 [2024-11-18 09:35:27,432 INFO L226 Difference]: Without dead ends: 447 [2024-11-18 09:35:27,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:27,434 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 77 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:27,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-18 09:35:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2024-11-18 09:35:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 413 states have (on average 1.4382566585956416) internal successors, (594), 417 states have internal predecessors, (594), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 646 transitions. [2024-11-18 09:35:27,450 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 646 transitions. Word has length 113 [2024-11-18 09:35:27,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:27,450 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 646 transitions. [2024-11-18 09:35:27,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 646 transitions. [2024-11-18 09:35:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:27,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:27,452 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:27,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:27,653 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,SelfDestructingSolverStorable8 [2024-11-18 09:35:27,654 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:27,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash -449081176, now seen corresponding path program 1 times [2024-11-18 09:35:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793802306] [2024-11-18 09:35:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:27,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:27,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793802306] [2024-11-18 09:35:27,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793802306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:27,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410756707] [2024-11-18 09:35:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:27,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:27,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:27,884 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) [2024-11-18 09:35:27,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:35:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:28,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:28,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:28,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:28,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410756707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:28,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:28,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:28,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007031624] [2024-11-18 09:35:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:28,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:28,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:28,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:28,391 INFO L87 Difference]: Start difference. First operand 447 states and 646 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:28,424 INFO L93 Difference]: Finished difference Result 701 states and 1051 transitions. [2024-11-18 09:35:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:28,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:28,427 INFO L225 Difference]: With dead ends: 701 [2024-11-18 09:35:28,427 INFO L226 Difference]: Without dead ends: 459 [2024-11-18 09:35:28,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:28,428 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:28,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-18 09:35:28,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 455. [2024-11-18 09:35:28,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 421 states have (on average 1.4299287410926367) internal successors, (602), 425 states have internal predecessors, (602), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 654 transitions. [2024-11-18 09:35:28,437 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 654 transitions. Word has length 151 [2024-11-18 09:35:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:28,437 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 654 transitions. [2024-11-18 09:35:28,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 654 transitions. [2024-11-18 09:35:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:28,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:28,439 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:28,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:28,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 09:35:28,640 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:28,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 252518698, now seen corresponding path program 1 times [2024-11-18 09:35:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281355070] [2024-11-18 09:35:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:28,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:28,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281355070] [2024-11-18 09:35:28,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281355070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:28,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157742520] [2024-11-18 09:35:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:28,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:28,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:28,889 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) [2024-11-18 09:35:28,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:35:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:29,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:29,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:29,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157742520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:29,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:29,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359713201] [2024-11-18 09:35:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:29,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:29,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:29,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:29,572 INFO L87 Difference]: Start difference. First operand 455 states and 654 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:29,593 INFO L93 Difference]: Finished difference Result 717 states and 1067 transitions. [2024-11-18 09:35:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:29,598 INFO L225 Difference]: With dead ends: 717 [2024-11-18 09:35:29,598 INFO L226 Difference]: Without dead ends: 467 [2024-11-18 09:35:29,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:29,599 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:29,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-18 09:35:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 463. [2024-11-18 09:35:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 429 states have (on average 1.421911421911422) internal successors, (610), 433 states have internal predecessors, (610), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 662 transitions. [2024-11-18 09:35:29,612 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 662 transitions. Word has length 151 [2024-11-18 09:35:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:29,612 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 662 transitions. [2024-11-18 09:35:29,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 662 transitions. [2024-11-18 09:35:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:29,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:29,614 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:29,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:29,815 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,SelfDestructingSolverStorable10 [2024-11-18 09:35:29,815 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:29,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1638722092, now seen corresponding path program 1 times [2024-11-18 09:35:29,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:29,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602506740] [2024-11-18 09:35:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:30,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:30,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602506740] [2024-11-18 09:35:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602506740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430576080] [2024-11-18 09:35:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:30,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:30,103 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) [2024-11-18 09:35:30,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 09:35:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:30,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:30,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:30,583 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:30,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430576080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:30,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:30,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:30,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679350705] [2024-11-18 09:35:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:30,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:30,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:30,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:30,585 INFO L87 Difference]: Start difference. First operand 463 states and 662 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:30,606 INFO L93 Difference]: Finished difference Result 733 states and 1087 transitions. [2024-11-18 09:35:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:30,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:30,609 INFO L225 Difference]: With dead ends: 733 [2024-11-18 09:35:30,609 INFO L226 Difference]: Without dead ends: 475 [2024-11-18 09:35:30,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:30,611 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:30,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-18 09:35:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-11-18 09:35:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 441 states have (on average 1.4104308390022675) internal successors, (622), 445 states have internal predecessors, (622), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 674 transitions. [2024-11-18 09:35:30,621 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 674 transitions. Word has length 151 [2024-11-18 09:35:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:30,621 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 674 transitions. [2024-11-18 09:35:30,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 674 transitions. [2024-11-18 09:35:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:30,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:30,623 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:30,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 09:35:30,823 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,SelfDestructingSolverStorable11 [2024-11-18 09:35:30,824 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:30,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash -733017170, now seen corresponding path program 1 times [2024-11-18 09:35:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:30,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387976197] [2024-11-18 09:35:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:30,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:31,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387976197] [2024-11-18 09:35:31,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387976197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884367696] [2024-11-18 09:35:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:31,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:31,043 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) [2024-11-18 09:35:31,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 09:35:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:31,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:31,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:31,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:31,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884367696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:31,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:31,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777013525] [2024-11-18 09:35:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:31,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:31,734 INFO L87 Difference]: Start difference. First operand 475 states and 674 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:31,759 INFO L93 Difference]: Finished difference Result 757 states and 1107 transitions. [2024-11-18 09:35:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:31,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:31,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:31,762 INFO L225 Difference]: With dead ends: 757 [2024-11-18 09:35:31,762 INFO L226 Difference]: Without dead ends: 487 [2024-11-18 09:35:31,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:31,763 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:31,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:31,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-18 09:35:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2024-11-18 09:35:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 449 states have (on average 1.4031180400890868) internal successors, (630), 453 states have internal predecessors, (630), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 682 transitions. [2024-11-18 09:35:31,774 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 682 transitions. Word has length 151 [2024-11-18 09:35:31,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:31,774 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 682 transitions. [2024-11-18 09:35:31,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:31,775 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 682 transitions. [2024-11-18 09:35:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:31,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:31,776 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:31,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 09:35:31,977 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,SelfDestructingSolverStorable12 [2024-11-18 09:35:31,977 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:31,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1756511792, now seen corresponding path program 1 times [2024-11-18 09:35:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:31,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871851572] [2024-11-18 09:35:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:31,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871851572] [2024-11-18 09:35:32,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871851572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:32,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67759880] [2024-11-18 09:35:32,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:32,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:32,206 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) [2024-11-18 09:35:32,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 09:35:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:32,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:32,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:32,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67759880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:32,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274407665] [2024-11-18 09:35:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:32,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:32,748 INFO L87 Difference]: Start difference. First operand 483 states and 682 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:32,767 INFO L93 Difference]: Finished difference Result 773 states and 1127 transitions. [2024-11-18 09:35:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:32,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:32,769 INFO L225 Difference]: With dead ends: 773 [2024-11-18 09:35:32,769 INFO L226 Difference]: Without dead ends: 495 [2024-11-18 09:35:32,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:32,770 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:32,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:32,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-18 09:35:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-11-18 09:35:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 461 states have (on average 1.3926247288503253) internal successors, (642), 465 states have internal predecessors, (642), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 694 transitions. [2024-11-18 09:35:32,780 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 694 transitions. Word has length 151 [2024-11-18 09:35:32,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:32,780 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 694 transitions. [2024-11-18 09:35:32,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 694 transitions. [2024-11-18 09:35:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:32,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:32,782 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:32,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 09:35:32,982 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,SelfDestructingSolverStorable13 [2024-11-18 09:35:32,983 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:32,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:32,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2115753678, now seen corresponding path program 1 times [2024-11-18 09:35:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840340189] [2024-11-18 09:35:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:33,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:33,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840340189] [2024-11-18 09:35:33,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840340189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:33,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582595692] [2024-11-18 09:35:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:33,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:33,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:33,198 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) [2024-11-18 09:35:33,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 09:35:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:33,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:33,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:33,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:33,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582595692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:33,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:33,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538313086] [2024-11-18 09:35:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:33,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:33,701 INFO L87 Difference]: Start difference. First operand 495 states and 694 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:33,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:33,720 INFO L93 Difference]: Finished difference Result 797 states and 1147 transitions. [2024-11-18 09:35:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:33,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:33,722 INFO L225 Difference]: With dead ends: 797 [2024-11-18 09:35:33,722 INFO L226 Difference]: Without dead ends: 507 [2024-11-18 09:35:33,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:33,723 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:33,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-18 09:35:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 503. [2024-11-18 09:35:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 469 states have (on average 1.3859275053304905) internal successors, (650), 473 states have internal predecessors, (650), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 702 transitions. [2024-11-18 09:35:33,735 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 702 transitions. Word has length 151 [2024-11-18 09:35:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:33,735 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 702 transitions. [2024-11-18 09:35:33,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 702 transitions. [2024-11-18 09:35:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:33,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:33,737 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:33,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:33,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:33,938 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:33,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash 899349940, now seen corresponding path program 1 times [2024-11-18 09:35:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313620343] [2024-11-18 09:35:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313620343] [2024-11-18 09:35:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313620343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030729183] [2024-11-18 09:35:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:34,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:34,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:34,195 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) [2024-11-18 09:35:34,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 09:35:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:34,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:34,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-18 09:35:34,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:34,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030729183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467852509] [2024-11-18 09:35:34,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:34,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:34,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:34,737 INFO L87 Difference]: Start difference. First operand 503 states and 702 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:34,754 INFO L93 Difference]: Finished difference Result 813 states and 1167 transitions. [2024-11-18 09:35:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:34,757 INFO L225 Difference]: With dead ends: 813 [2024-11-18 09:35:34,757 INFO L226 Difference]: Without dead ends: 515 [2024-11-18 09:35:34,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:34,758 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:34,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-18 09:35:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-18 09:35:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 481 states have (on average 1.3762993762993763) internal successors, (662), 485 states have internal predecessors, (662), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 714 transitions. [2024-11-18 09:35:34,768 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 714 transitions. Word has length 151 [2024-11-18 09:35:34,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:34,768 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 714 transitions. [2024-11-18 09:35:34,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 714 transitions. [2024-11-18 09:35:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 09:35:34,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:34,770 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:34,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 09:35:34,970 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,SelfDestructingSolverStorable15 [2024-11-18 09:35:34,971 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:34,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:34,971 INFO L85 PathProgramCache]: Analyzing trace with hash -527405776, now seen corresponding path program 1 times [2024-11-18 09:35:34,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:34,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368809772] [2024-11-18 09:35:34,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:34,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-18 09:35:35,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:35,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368809772] [2024-11-18 09:35:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368809772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668601834] [2024-11-18 09:35:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:35,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:35,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:35,176 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) [2024-11-18 09:35:35,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 09:35:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:35,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:35,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 09:35:35,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:35,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668601834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:35,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:35,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66682587] [2024-11-18 09:35:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:35,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:35,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:35,763 INFO L87 Difference]: Start difference. First operand 515 states and 714 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:35,773 INFO L93 Difference]: Finished difference Result 825 states and 1171 transitions. [2024-11-18 09:35:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 151 [2024-11-18 09:35:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:35,776 INFO L225 Difference]: With dead ends: 825 [2024-11-18 09:35:35,776 INFO L226 Difference]: Without dead ends: 815 [2024-11-18 09:35:35,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:35,777 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 54 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:35,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 711 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-18 09:35:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2024-11-18 09:35:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 781 states have (on average 1.416133162612036) internal successors, (1106), 785 states have internal predecessors, (1106), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1158 transitions. [2024-11-18 09:35:35,788 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1158 transitions. Word has length 151 [2024-11-18 09:35:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:35,788 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1158 transitions. [2024-11-18 09:35:35,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1158 transitions. [2024-11-18 09:35:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 09:35:35,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:35,790 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:35,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 09:35:35,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 09:35:35,991 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:35,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1251872156, now seen corresponding path program 1 times [2024-11-18 09:35:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:35,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208627591] [2024-11-18 09:35:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-18 09:35:36,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:36,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208627591] [2024-11-18 09:35:36,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208627591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:36,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550997641] [2024-11-18 09:35:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:36,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:36,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:36,242 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) [2024-11-18 09:35:36,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 09:35:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:36,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:36,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-18 09:35:36,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:36,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550997641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:36,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:36,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159847025] [2024-11-18 09:35:36,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:36,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:36,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:36,870 INFO L87 Difference]: Start difference. First operand 815 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:36,890 INFO L93 Difference]: Finished difference Result 1425 states and 2059 transitions. [2024-11-18 09:35:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:36,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 161 [2024-11-18 09:35:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:36,895 INFO L225 Difference]: With dead ends: 1425 [2024-11-18 09:35:36,895 INFO L226 Difference]: Without dead ends: 1415 [2024-11-18 09:35:36,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:36,897 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 53 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:36,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2024-11-18 09:35:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1415. [2024-11-18 09:35:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1381 states have (on average 1.443881245474294) internal successors, (1994), 1385 states have internal predecessors, (1994), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2046 transitions. [2024-11-18 09:35:36,921 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2046 transitions. Word has length 161 [2024-11-18 09:35:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:36,921 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 2046 transitions. [2024-11-18 09:35:36,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2046 transitions. [2024-11-18 09:35:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 09:35:36,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:36,925 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:36,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 09:35:37,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 09:35:37,126 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:37,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1779724118, now seen corresponding path program 1 times [2024-11-18 09:35:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:37,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771251740] [2024-11-18 09:35:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-18 09:35:37,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771251740] [2024-11-18 09:35:37,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771251740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:37,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618714028] [2024-11-18 09:35:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:37,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:37,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:37,460 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) [2024-11-18 09:35:37,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 09:35:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:38,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:38,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-18 09:35:38,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618714028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:38,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:38,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167706961] [2024-11-18 09:35:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:38,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:38,055 INFO L87 Difference]: Start difference. First operand 1415 states and 2046 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:38,076 INFO L93 Difference]: Finished difference Result 2673 states and 3915 transitions. [2024-11-18 09:35:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 205 [2024-11-18 09:35:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:38,081 INFO L225 Difference]: With dead ends: 2673 [2024-11-18 09:35:38,081 INFO L226 Difference]: Without dead ends: 1463 [2024-11-18 09:35:38,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:38,083 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:38,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2024-11-18 09:35:38,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2024-11-18 09:35:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1429 states have (on average 1.4289713086074178) internal successors, (2042), 1433 states have internal predecessors, (2042), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2094 transitions. [2024-11-18 09:35:38,100 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2094 transitions. Word has length 205 [2024-11-18 09:35:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:38,100 INFO L471 AbstractCegarLoop]: Abstraction has 1463 states and 2094 transitions. [2024-11-18 09:35:38,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2094 transitions. [2024-11-18 09:35:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-18 09:35:38,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:38,103 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:38,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 09:35:38,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:38,304 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:38,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1335823444, now seen corresponding path program 1 times [2024-11-18 09:35:38,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:38,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44896263] [2024-11-18 09:35:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:38,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-18 09:35:38,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44896263] [2024-11-18 09:35:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44896263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:38,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818343265] [2024-11-18 09:35:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:38,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:38,520 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:38,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 09:35:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:39,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:39,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-18 09:35:39,269 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818343265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:39,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:39,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:39,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205462175] [2024-11-18 09:35:39,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:39,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:39,270 INFO L87 Difference]: Start difference. First operand 1463 states and 2094 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:39,285 INFO L93 Difference]: Finished difference Result 2721 states and 3931 transitions. [2024-11-18 09:35:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 205 [2024-11-18 09:35:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:39,292 INFO L225 Difference]: With dead ends: 2721 [2024-11-18 09:35:39,292 INFO L226 Difference]: Without dead ends: 2711 [2024-11-18 09:35:39,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:39,293 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 43 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:39,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:39,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2024-11-18 09:35:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2711. [2024-11-18 09:35:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2677 states have (on average 1.4441539036234592) internal successors, (3866), 2681 states have internal predecessors, (3866), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3918 transitions. [2024-11-18 09:35:39,322 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3918 transitions. Word has length 205 [2024-11-18 09:35:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:39,322 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3918 transitions. [2024-11-18 09:35:39,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3918 transitions. [2024-11-18 09:35:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-18 09:35:39,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:39,327 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:39,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:39,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:39,528 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:39,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:39,528 INFO L85 PathProgramCache]: Analyzing trace with hash 850952836, now seen corresponding path program 1 times [2024-11-18 09:35:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981227674] [2024-11-18 09:35:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-18 09:35:39,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:39,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981227674] [2024-11-18 09:35:39,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981227674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:39,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489196817] [2024-11-18 09:35:39,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:39,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:39,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:39,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:39,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 09:35:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:40,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:40,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-18 09:35:40,563 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:40,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489196817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:40,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:40,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:40,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636411731] [2024-11-18 09:35:40,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:40,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:40,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:40,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:40,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:40,565 INFO L87 Difference]: Start difference. First operand 2711 states and 3918 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:40,585 INFO L93 Difference]: Finished difference Result 5217 states and 7579 transitions. [2024-11-18 09:35:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 229 [2024-11-18 09:35:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:40,598 INFO L225 Difference]: With dead ends: 5217 [2024-11-18 09:35:40,598 INFO L226 Difference]: Without dead ends: 5207 [2024-11-18 09:35:40,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:40,600 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 38 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:40,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2024-11-18 09:35:40,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5207. [2024-11-18 09:35:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5173 states have (on average 1.4525420452348734) internal successors, (7514), 5177 states have internal predecessors, (7514), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7566 transitions. [2024-11-18 09:35:40,660 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7566 transitions. Word has length 229 [2024-11-18 09:35:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:40,661 INFO L471 AbstractCegarLoop]: Abstraction has 5207 states and 7566 transitions. [2024-11-18 09:35:40,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7566 transitions. [2024-11-18 09:35:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-18 09:35:40,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:40,668 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:40,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 09:35:40,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-18 09:35:40,869 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:40,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1195580372, now seen corresponding path program 1 times [2024-11-18 09:35:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:40,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822475667] [2024-11-18 09:35:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-18 09:35:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822475667] [2024-11-18 09:35:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822475667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063212337] [2024-11-18 09:35:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:41,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:41,092 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:41,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 09:35:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:41,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:41,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-18 09:35:41,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063212337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:41,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:41,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:41,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122293194] [2024-11-18 09:35:41,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:41,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:41,883 INFO L87 Difference]: Start difference. First operand 5207 states and 7566 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:41,916 INFO L93 Difference]: Finished difference Result 10209 states and 14875 transitions. [2024-11-18 09:35:41,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 259 [2024-11-18 09:35:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:41,951 INFO L225 Difference]: With dead ends: 10209 [2024-11-18 09:35:41,951 INFO L226 Difference]: Without dead ends: 10199 [2024-11-18 09:35:41,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:41,959 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 34 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:41,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 710 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2024-11-18 09:35:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 10199. [2024-11-18 09:35:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10199 states, 10165 states have (on average 1.456960157402853) internal successors, (14810), 10169 states have internal predecessors, (14810), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 14862 transitions. [2024-11-18 09:35:42,105 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 14862 transitions. Word has length 259 [2024-11-18 09:35:42,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:42,106 INFO L471 AbstractCegarLoop]: Abstraction has 10199 states and 14862 transitions. [2024-11-18 09:35:42,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:42,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 14862 transitions. [2024-11-18 09:35:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-18 09:35:42,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:42,120 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:42,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 09:35:42,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-18 09:35:42,325 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:42,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1898362062, now seen corresponding path program 1 times [2024-11-18 09:35:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139509571] [2024-11-18 09:35:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:42,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-18 09:35:42,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139509571] [2024-11-18 09:35:42,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139509571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379372627] [2024-11-18 09:35:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:42,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:42,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:42,640 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:42,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 09:35:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:43,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:43,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-18 09:35:43,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379372627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:43,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678776124] [2024-11-18 09:35:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:43,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:43,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:43,343 INFO L87 Difference]: Start difference. First operand 10199 states and 14862 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:43,399 INFO L93 Difference]: Finished difference Result 20577 states and 30107 transitions. [2024-11-18 09:35:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:43,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 311 [2024-11-18 09:35:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:43,415 INFO L225 Difference]: With dead ends: 20577 [2024-11-18 09:35:43,415 INFO L226 Difference]: Without dead ends: 10583 [2024-11-18 09:35:43,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:43,427 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:43,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2024-11-18 09:35:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 10583. [2024-11-18 09:35:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10583 states, 10549 states have (on average 1.4403260972604037) internal successors, (15194), 10553 states have internal predecessors, (15194), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10583 states to 10583 states and 15246 transitions. [2024-11-18 09:35:43,555 INFO L78 Accepts]: Start accepts. Automaton has 10583 states and 15246 transitions. Word has length 311 [2024-11-18 09:35:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:43,555 INFO L471 AbstractCegarLoop]: Abstraction has 10583 states and 15246 transitions. [2024-11-18 09:35:43,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10583 states and 15246 transitions. [2024-11-18 09:35:43,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-18 09:35:43,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:43,571 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:43,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:43,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:43,776 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:43,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash 451781196, now seen corresponding path program 1 times [2024-11-18 09:35:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352991380] [2024-11-18 09:35:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-18 09:35:44,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:44,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352991380] [2024-11-18 09:35:44,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352991380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:44,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981279061] [2024-11-18 09:35:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:44,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:44,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:44,220 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:44,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 09:35:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:44,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:44,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 09:35:45,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:45,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981279061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:45,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:45,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667369680] [2024-11-18 09:35:45,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:45,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:45,145 INFO L87 Difference]: Start difference. First operand 10583 states and 15246 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:45,204 INFO L93 Difference]: Finished difference Result 20961 states and 30235 transitions. [2024-11-18 09:35:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 311 [2024-11-18 09:35:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:45,234 INFO L225 Difference]: With dead ends: 20961 [2024-11-18 09:35:45,234 INFO L226 Difference]: Without dead ends: 20951 [2024-11-18 09:35:45,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:45,243 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 23 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:45,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20951 states. [2024-11-18 09:35:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20951 to 20951. [2024-11-18 09:35:45,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20951 states, 20917 states have (on average 1.4423674523115169) internal successors, (30170), 20921 states have internal predecessors, (30170), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 30222 transitions. [2024-11-18 09:35:45,469 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 30222 transitions. Word has length 311 [2024-11-18 09:35:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:45,469 INFO L471 AbstractCegarLoop]: Abstraction has 20951 states and 30222 transitions. [2024-11-18 09:35:45,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 30222 transitions. [2024-11-18 09:35:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-18 09:35:45,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:45,492 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:45,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:45,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:45,697 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:45,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 672270370, now seen corresponding path program 1 times [2024-11-18 09:35:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227764818] [2024-11-18 09:35:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 09:35:46,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:46,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227764818] [2024-11-18 09:35:46,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227764818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:46,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423632873] [2024-11-18 09:35:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:46,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:46,034 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:46,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 09:35:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:46,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 09:35:46,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-18 09:35:46,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423632873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:46,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 09:35:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537502983] [2024-11-18 09:35:46,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:46,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 09:35:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 09:35:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:46,788 INFO L87 Difference]: Start difference. First operand 20951 states and 30222 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:46,857 INFO L93 Difference]: Finished difference Result 31585 states and 45723 transitions. [2024-11-18 09:35:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 09:35:46,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 369 [2024-11-18 09:35:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:46,888 INFO L225 Difference]: With dead ends: 31585 [2024-11-18 09:35:46,889 INFO L226 Difference]: Without dead ends: 21207 [2024-11-18 09:35:46,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:46,907 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 0 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:46,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21207 states. [2024-11-18 09:35:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21207 to 21207. [2024-11-18 09:35:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21207 states, 21173 states have (on average 1.4370188447551127) internal successors, (30426), 21177 states have internal predecessors, (30426), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 30478 transitions. [2024-11-18 09:35:47,125 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 30478 transitions. Word has length 369 [2024-11-18 09:35:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:47,125 INFO L471 AbstractCegarLoop]: Abstraction has 21207 states and 30478 transitions. [2024-11-18 09:35:47,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 30478 transitions. [2024-11-18 09:35:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-18 09:35:47,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:47,145 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:47,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-18 09:35:47,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 09:35:47,350 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:47,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1654892000, now seen corresponding path program 1 times [2024-11-18 09:35:47,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:47,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489598107] [2024-11-18 09:35:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:47,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 09:35:47,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489598107] [2024-11-18 09:35:47,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489598107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136131250] [2024-11-18 09:35:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:47,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:47,779 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:47,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 09:35:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:48,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:48,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 09:35:48,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 09:35:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136131250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:48,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 09:35:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16209115] [2024-11-18 09:35:48,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:48,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:35:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:35:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:48,641 INFO L87 Difference]: Start difference. First operand 21207 states and 30478 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 09:35:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:48,787 INFO L93 Difference]: Finished difference Result 42415 states and 60959 transitions. [2024-11-18 09:35:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:48,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 369 [2024-11-18 09:35:48,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:48,815 INFO L225 Difference]: With dead ends: 42415 [2024-11-18 09:35:48,815 INFO L226 Difference]: Without dead ends: 21213 [2024-11-18 09:35:48,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 735 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:35:48,837 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:48,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1412 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21213 states. [2024-11-18 09:35:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21213 to 21213. [2024-11-18 09:35:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21213 states, 21179 states have (on average 1.436895037537183) internal successors, (30432), 21183 states have internal predecessors, (30432), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21213 states to 21213 states and 30484 transitions. [2024-11-18 09:35:49,054 INFO L78 Accepts]: Start accepts. Automaton has 21213 states and 30484 transitions. Word has length 369 [2024-11-18 09:35:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:49,054 INFO L471 AbstractCegarLoop]: Abstraction has 21213 states and 30484 transitions. [2024-11-18 09:35:49,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 09:35:49,054 INFO L276 IsEmpty]: Start isEmpty. Operand 21213 states and 30484 transitions. [2024-11-18 09:35:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-18 09:35:49,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:49,073 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:49,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:49,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 09:35:49,274 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:49,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 226629946, now seen corresponding path program 2 times [2024-11-18 09:35:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:49,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178892743] [2024-11-18 09:35:49,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:49,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:49,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-11-18 09:35:49,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:49,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178892743] [2024-11-18 09:35:49,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178892743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:49,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189788718] [2024-11-18 09:35:49,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:35:49,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:49,736 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:49,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 09:35:52,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:35:52,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:52,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:35:52,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 09:35:52,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:52,143 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-18 09:35:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189788718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:52,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:52,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-18 09:35:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169286282] [2024-11-18 09:35:52,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:52,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:35:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:35:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:35:52,145 INFO L87 Difference]: Start difference. First operand 21213 states and 30484 transitions. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 09:35:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:52,289 INFO L93 Difference]: Finished difference Result 42429 states and 60981 transitions. [2024-11-18 09:35:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:35:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 375 [2024-11-18 09:35:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:52,320 INFO L225 Difference]: With dead ends: 42429 [2024-11-18 09:35:52,321 INFO L226 Difference]: Without dead ends: 21227 [2024-11-18 09:35:52,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:35:52,344 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 3 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:52,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1405 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21227 states. [2024-11-18 09:35:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21227 to 21227. [2024-11-18 09:35:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21227 states, 21193 states have (on average 1.4366064266503091) internal successors, (30446), 21197 states have internal predecessors, (30446), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21227 states to 21227 states and 30498 transitions. [2024-11-18 09:35:52,574 INFO L78 Accepts]: Start accepts. Automaton has 21227 states and 30498 transitions. Word has length 375 [2024-11-18 09:35:52,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:52,574 INFO L471 AbstractCegarLoop]: Abstraction has 21227 states and 30498 transitions. [2024-11-18 09:35:52,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 09:35:52,575 INFO L276 IsEmpty]: Start isEmpty. Operand 21227 states and 30498 transitions. [2024-11-18 09:35:52,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:35:52,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:52,595 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:52,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-18 09:35:52,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 09:35:52,796 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:52,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1355133066, now seen corresponding path program 3 times [2024-11-18 09:35:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:52,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449985418] [2024-11-18 09:35:52,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:35:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:53,152 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:35:53,153 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:35:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2024-11-18 09:35:53,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:53,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449985418] [2024-11-18 09:35:53,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449985418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:53,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:35:53,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:35:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255552909] [2024-11-18 09:35:53,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:53,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:35:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:35:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:35:53,344 INFO L87 Difference]: Start difference. First operand 21227 states and 30498 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:53,709 INFO L93 Difference]: Finished difference Result 58869 states and 84015 transitions. [2024-11-18 09:35:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 09:35:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-18 09:35:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:53,765 INFO L225 Difference]: With dead ends: 58869 [2024-11-18 09:35:53,766 INFO L226 Difference]: Without dead ends: 37867 [2024-11-18 09:35:53,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:53,793 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 70 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:53,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1241 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:35:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37867 states. [2024-11-18 09:35:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37867 to 22763. [2024-11-18 09:35:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22763 states, 22729 states have (on average 1.4408904923225836) internal successors, (32750), 22733 states have internal predecessors, (32750), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22763 states to 22763 states and 32802 transitions. [2024-11-18 09:35:54,228 INFO L78 Accepts]: Start accepts. Automaton has 22763 states and 32802 transitions. Word has length 395 [2024-11-18 09:35:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:54,229 INFO L471 AbstractCegarLoop]: Abstraction has 22763 states and 32802 transitions. [2024-11-18 09:35:54,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 22763 states and 32802 transitions. [2024-11-18 09:35:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:35:54,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:54,259 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:54,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 09:35:54,260 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:54,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1214584456, now seen corresponding path program 1 times [2024-11-18 09:35:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040012392] [2024-11-18 09:35:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:54,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-18 09:35:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040012392] [2024-11-18 09:35:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040012392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253849522] [2024-11-18 09:35:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:54,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:54,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:54,658 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:54,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 09:35:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:55,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:55,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2024-11-18 09:35:55,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253849522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:55,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:55,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:55,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531491479] [2024-11-18 09:35:55,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:55,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:55,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:55,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:55,534 INFO L87 Difference]: Start difference. First operand 22763 states and 32802 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:55,631 INFO L93 Difference]: Finished difference Result 45557 states and 65583 transitions. [2024-11-18 09:35:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:55,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-18 09:35:55,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:55,660 INFO L225 Difference]: With dead ends: 45557 [2024-11-18 09:35:55,661 INFO L226 Difference]: Without dead ends: 23019 [2024-11-18 09:35:55,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:55,681 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:55,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23019 states. [2024-11-18 09:35:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23019 to 22763. [2024-11-18 09:35:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22763 states, 22729 states have (on average 1.4296273483215276) internal successors, (32494), 22733 states have internal predecessors, (32494), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22763 states to 22763 states and 32546 transitions. [2024-11-18 09:35:56,031 INFO L78 Accepts]: Start accepts. Automaton has 22763 states and 32546 transitions. Word has length 395 [2024-11-18 09:35:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:56,032 INFO L471 AbstractCegarLoop]: Abstraction has 22763 states and 32546 transitions. [2024-11-18 09:35:56,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand 22763 states and 32546 transitions. [2024-11-18 09:35:56,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:35:56,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:56,053 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:56,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:56,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-18 09:35:56,254 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:56,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1274944506, now seen corresponding path program 1 times [2024-11-18 09:35:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:56,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494687801] [2024-11-18 09:35:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-18 09:35:56,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:56,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494687801] [2024-11-18 09:35:56,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494687801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:56,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062425977] [2024-11-18 09:35:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:56,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:56,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:56,577 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:56,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-18 09:35:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:57,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:35:57,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2024-11-18 09:35:57,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:35:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062425977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:35:57,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:35:57,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:35:57,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354923918] [2024-11-18 09:35:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:35:57,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:35:57,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:35:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:57,462 INFO L87 Difference]: Start difference. First operand 22763 states and 32546 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:57,563 INFO L93 Difference]: Finished difference Result 46069 states and 66095 transitions. [2024-11-18 09:35:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:35:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 395 [2024-11-18 09:35:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:57,598 INFO L225 Difference]: With dead ends: 46069 [2024-11-18 09:35:57,598 INFO L226 Difference]: Without dead ends: 23531 [2024-11-18 09:35:57,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:35:57,619 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:57,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:35:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23531 states. [2024-11-18 09:35:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23531 to 23531. [2024-11-18 09:35:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23531 states, 23497 states have (on average 1.3937949525471336) internal successors, (32750), 23501 states have internal predecessors, (32750), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 09:35:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23531 states to 23531 states and 32802 transitions. [2024-11-18 09:35:57,860 INFO L78 Accepts]: Start accepts. Automaton has 23531 states and 32802 transitions. Word has length 395 [2024-11-18 09:35:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:35:57,860 INFO L471 AbstractCegarLoop]: Abstraction has 23531 states and 32802 transitions. [2024-11-18 09:35:57,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:35:57,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23531 states and 32802 transitions. [2024-11-18 09:35:57,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-18 09:35:57,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:35:57,881 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:35:57,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-18 09:35:58,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:58,082 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:35:58,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:35:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1697646332, now seen corresponding path program 1 times [2024-11-18 09:35:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:35:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956219100] [2024-11-18 09:35:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:35:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2024-11-18 09:35:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:35:58,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956219100] [2024-11-18 09:35:58,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956219100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:35:58,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735520717] [2024-11-18 09:35:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:35:58,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:35:58,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:35:58,466 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:35:58,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-18 09:35:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:35:59,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 09:35:59,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:35:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-18 09:35:59,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:35:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-18 09:35:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735520717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:35:59,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:35:59,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 18 [2024-11-18 09:35:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436554375] [2024-11-18 09:35:59,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:35:59,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 09:35:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:35:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 09:35:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:35:59,634 INFO L87 Difference]: Start difference. First operand 23531 states and 32802 transitions. Second operand has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 09:35:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:35:59,812 INFO L93 Difference]: Finished difference Result 47060 states and 65610 transitions. [2024-11-18 09:35:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 09:35:59,813 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 395 [2024-11-18 09:35:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:35:59,837 INFO L225 Difference]: With dead ends: 47060 [2024-11-18 09:35:59,838 INFO L226 Difference]: Without dead ends: 23552 [2024-11-18 09:35:59,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 768 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:35:59,858 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 15 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:35:59,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2435 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:35:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23552 states. [2024-11-18 09:36:00,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23552 to 23546. [2024-11-18 09:36:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23546 states, 23511 states have (on average 1.3936029943430734) internal successors, (32765), 23515 states have internal predecessors, (32765), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-18 09:36:00,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23546 states to 23546 states and 32819 transitions. [2024-11-18 09:36:00,084 INFO L78 Accepts]: Start accepts. Automaton has 23546 states and 32819 transitions. Word has length 395 [2024-11-18 09:36:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:00,084 INFO L471 AbstractCegarLoop]: Abstraction has 23546 states and 32819 transitions. [2024-11-18 09:36:00,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 09:36:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 23546 states and 32819 transitions. [2024-11-18 09:36:00,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-18 09:36:00,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:00,104 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:00,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-18 09:36:00,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:00,305 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:00,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:00,305 INFO L85 PathProgramCache]: Analyzing trace with hash -133336574, now seen corresponding path program 2 times [2024-11-18 09:36:00,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:00,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881599482] [2024-11-18 09:36:00,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:36:00,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:00,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:36:00,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2024-11-18 09:36:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881599482] [2024-11-18 09:36:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881599482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:36:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536197831] [2024-11-18 09:36:00,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:36:00,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:00,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:36:00,661 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:36:00,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-18 09:36:03,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:36:03,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:03,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:36:03,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:36:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2024-11-18 09:36:03,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:36:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2024-11-18 09:36:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536197831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:36:03,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:36:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-18 09:36:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428993301] [2024-11-18 09:36:03,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:36:03,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:36:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:36:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:36:03,105 INFO L87 Difference]: Start difference. First operand 23546 states and 32819 transitions. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:36:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:03,290 INFO L93 Difference]: Finished difference Result 47069 states and 65621 transitions. [2024-11-18 09:36:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:36:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 406 [2024-11-18 09:36:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:03,316 INFO L225 Difference]: With dead ends: 47069 [2024-11-18 09:36:03,316 INFO L226 Difference]: Without dead ends: 23587 [2024-11-18 09:36:03,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:36:03,343 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 52 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:03,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1727 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:36:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23587 states. [2024-11-18 09:36:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23587 to 23581. [2024-11-18 09:36:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23581 states, 23541 states have (on average 1.3933137929569688) internal successors, (32800), 23545 states have internal predecessors, (32800), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 09:36:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23581 states to 23581 states and 32864 transitions. [2024-11-18 09:36:03,578 INFO L78 Accepts]: Start accepts. Automaton has 23581 states and 32864 transitions. Word has length 406 [2024-11-18 09:36:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:03,578 INFO L471 AbstractCegarLoop]: Abstraction has 23581 states and 32864 transitions. [2024-11-18 09:36:03,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:36:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 23581 states and 32864 transitions. [2024-11-18 09:36:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 09:36:03,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:03,599 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:03,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-18 09:36:03,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-18 09:36:03,800 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:03,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash -729813116, now seen corresponding path program 3 times [2024-11-18 09:36:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739915118] [2024-11-18 09:36:03,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:36:03,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:04,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:36:04,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-11-18 09:36:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:04,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739915118] [2024-11-18 09:36:04,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739915118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:04,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:04,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:36:04,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826400777] [2024-11-18 09:36:04,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:04,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:36:04,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:36:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:36:04,356 INFO L87 Difference]: Start difference. First operand 23581 states and 32864 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:04,703 INFO L93 Difference]: Finished difference Result 67879 states and 94317 transitions. [2024-11-18 09:36:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:36:04,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 421 [2024-11-18 09:36:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:04,751 INFO L225 Difference]: With dead ends: 67879 [2024-11-18 09:36:04,751 INFO L226 Difference]: Without dead ends: 44573 [2024-11-18 09:36:04,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 09:36:04,778 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 219 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:04,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1527 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:36:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44573 states. [2024-11-18 09:36:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44573 to 26653. [2024-11-18 09:36:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26653 states, 26613 states have (on average 1.3960094690564762) internal successors, (37152), 26617 states have internal predecessors, (37152), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 09:36:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26653 states to 26653 states and 37216 transitions. [2024-11-18 09:36:05,466 INFO L78 Accepts]: Start accepts. Automaton has 26653 states and 37216 transitions. Word has length 421 [2024-11-18 09:36:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:05,466 INFO L471 AbstractCegarLoop]: Abstraction has 26653 states and 37216 transitions. [2024-11-18 09:36:05,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 26653 states and 37216 transitions. [2024-11-18 09:36:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 09:36:05,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:05,508 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:05,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-18 09:36:05,508 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:05,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash -28213242, now seen corresponding path program 1 times [2024-11-18 09:36:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773448838] [2024-11-18 09:36:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-18 09:36:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773448838] [2024-11-18 09:36:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773448838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:36:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267057516] [2024-11-18 09:36:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:06,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:06,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:36:06,261 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:36:06,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-18 09:36:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:07,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:36:07,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:36:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2024-11-18 09:36:07,613 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:36:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267057516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:07,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:36:07,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:36:07,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522296562] [2024-11-18 09:36:07,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:07,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:36:07,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:07,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:36:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:36:07,615 INFO L87 Difference]: Start difference. First operand 26653 states and 37216 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:07,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:07,778 INFO L93 Difference]: Finished difference Result 53287 states and 74349 transitions. [2024-11-18 09:36:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:36:07,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 421 [2024-11-18 09:36:07,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:07,841 INFO L225 Difference]: With dead ends: 53287 [2024-11-18 09:36:07,845 INFO L226 Difference]: Without dead ends: 26909 [2024-11-18 09:36:07,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:36:07,888 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:07,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1060 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:36:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26909 states. [2024-11-18 09:36:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26909 to 26653. [2024-11-18 09:36:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26653 states, 26613 states have (on average 1.3863901100965694) internal successors, (36896), 26617 states have internal predecessors, (36896), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 09:36:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26653 states to 26653 states and 36960 transitions. [2024-11-18 09:36:08,252 INFO L78 Accepts]: Start accepts. Automaton has 26653 states and 36960 transitions. Word has length 421 [2024-11-18 09:36:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:08,252 INFO L471 AbstractCegarLoop]: Abstraction has 26653 states and 36960 transitions. [2024-11-18 09:36:08,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 26653 states and 36960 transitions. [2024-11-18 09:36:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 09:36:08,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:08,277 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:08,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-18 09:36:08,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:08,477 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:08,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1357990152, now seen corresponding path program 1 times [2024-11-18 09:36:08,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:08,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844706738] [2024-11-18 09:36:08,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:08,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-18 09:36:08,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844706738] [2024-11-18 09:36:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844706738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:36:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628644302] [2024-11-18 09:36:08,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:08,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:36:08,879 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:36:08,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-18 09:36:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:09,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 09:36:09,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:36:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-11-18 09:36:09,918 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 09:36:09,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628644302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:09,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 09:36:09,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 09:36:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919396420] [2024-11-18 09:36:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:09,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:36:09,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:36:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:36:09,920 INFO L87 Difference]: Start difference. First operand 26653 states and 36960 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:10,100 INFO L93 Difference]: Finished difference Result 53799 states and 74861 transitions. [2024-11-18 09:36:10,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:36:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 421 [2024-11-18 09:36:10,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:10,130 INFO L225 Difference]: With dead ends: 53799 [2024-11-18 09:36:10,131 INFO L226 Difference]: Without dead ends: 27421 [2024-11-18 09:36:10,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:36:10,147 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:10,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1061 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:36:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27421 states. [2024-11-18 09:36:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27421 to 27421. [2024-11-18 09:36:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27421 states, 27381 states have (on average 1.3568532924290566) internal successors, (37152), 27385 states have internal predecessors, (37152), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-18 09:36:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27421 states to 27421 states and 37216 transitions. [2024-11-18 09:36:10,394 INFO L78 Accepts]: Start accepts. Automaton has 27421 states and 37216 transitions. Word has length 421 [2024-11-18 09:36:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:10,394 INFO L471 AbstractCegarLoop]: Abstraction has 27421 states and 37216 transitions. [2024-11-18 09:36:10,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-18 09:36:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 27421 states and 37216 transitions. [2024-11-18 09:36:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-11-18 09:36:10,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:10,418 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:10,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-18 09:36:10,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:10,619 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:10,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1013749110, now seen corresponding path program 1 times [2024-11-18 09:36:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706697557] [2024-11-18 09:36:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:10,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1042 trivial. 0 not checked. [2024-11-18 09:36:10,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706697557] [2024-11-18 09:36:10,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706697557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:36:10,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968258269] [2024-11-18 09:36:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:36:10,970 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:36:10,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-18 09:36:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:12,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:36:12,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:36:12,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 989 trivial. 0 not checked. [2024-11-18 09:36:12,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:36:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2024-11-18 09:36:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968258269] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:36:12,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:36:12,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2024-11-18 09:36:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446837342] [2024-11-18 09:36:12,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:36:12,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 09:36:12,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:12,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 09:36:12,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:36:12,529 INFO L87 Difference]: Start difference. First operand 27421 states and 37216 transitions. Second operand has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:36:12,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:12,904 INFO L93 Difference]: Finished difference Result 54819 states and 74419 transitions. [2024-11-18 09:36:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 09:36:12,905 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 421 [2024-11-18 09:36:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:12,943 INFO L225 Difference]: With dead ends: 54819 [2024-11-18 09:36:12,943 INFO L226 Difference]: Without dead ends: 27490 [2024-11-18 09:36:12,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2024-11-18 09:36:12,973 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 123 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:12,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1758 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:36:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27490 states. [2024-11-18 09:36:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27490 to 27484. [2024-11-18 09:36:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27484 states, 27435 states have (on average 1.3564789502460362) internal successors, (37215), 27439 states have internal predecessors, (37215), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (41), 38 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-18 09:36:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27484 states to 27484 states and 37297 transitions. [2024-11-18 09:36:13,367 INFO L78 Accepts]: Start accepts. Automaton has 27484 states and 37297 transitions. Word has length 421 [2024-11-18 09:36:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:13,367 INFO L471 AbstractCegarLoop]: Abstraction has 27484 states and 37297 transitions. [2024-11-18 09:36:13,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:36:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 27484 states and 37297 transitions. [2024-11-18 09:36:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-18 09:36:13,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:13,403 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:13,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-18 09:36:13,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-18 09:36:13,603 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:13,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1788942344, now seen corresponding path program 2 times [2024-11-18 09:36:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:13,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283227608] [2024-11-18 09:36:13,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:36:13,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:13,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:36:13,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1282 trivial. 0 not checked. [2024-11-18 09:36:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283227608] [2024-11-18 09:36:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283227608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:36:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791284199] [2024-11-18 09:36:14,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:36:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:36:14,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:36:14,325 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:36:14,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-18 09:36:16,789 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:36:16,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:16,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 09:36:16,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:36:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2024-11-18 09:36:16,826 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:36:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2024-11-18 09:36:16,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791284199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:36:16,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:36:16,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-18 09:36:16,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059923695] [2024-11-18 09:36:16,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:36:16,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 09:36:16,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 09:36:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:36:16,893 INFO L87 Difference]: Start difference. First operand 27484 states and 37297 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:36:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:17,156 INFO L93 Difference]: Finished difference Result 54845 states and 74448 transitions. [2024-11-18 09:36:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 09:36:17,156 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 448 [2024-11-18 09:36:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:17,193 INFO L225 Difference]: With dead ends: 54845 [2024-11-18 09:36:17,193 INFO L226 Difference]: Without dead ends: 27525 [2024-11-18 09:36:17,216 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:36:17,216 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 54 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:17,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1403 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:36:17,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27525 states. [2024-11-18 09:36:17,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27525 to 27519. [2024-11-18 09:36:17,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27519 states, 27465 states have (on average 1.356271618423448) internal successors, (37250), 27469 states have internal predecessors, (37250), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-18 09:36:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27519 states to 27519 states and 37342 transitions. [2024-11-18 09:36:17,519 INFO L78 Accepts]: Start accepts. Automaton has 27519 states and 37342 transitions. Word has length 448 [2024-11-18 09:36:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:17,519 INFO L471 AbstractCegarLoop]: Abstraction has 27519 states and 37342 transitions. [2024-11-18 09:36:17,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 10 states have internal predecessors, (178), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 09:36:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 27519 states and 37342 transitions. [2024-11-18 09:36:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-11-18 09:36:17,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:17,544 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:17,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-18 09:36:17,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 09:36:17,745 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:17,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 9248666, now seen corresponding path program 3 times [2024-11-18 09:36:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857238129] [2024-11-18 09:36:17,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:36:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:18,257 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-18 09:36:18,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:36:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1331 trivial. 0 not checked. [2024-11-18 09:36:19,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857238129] [2024-11-18 09:36:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857238129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:19,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:19,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 09:36:19,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59260911] [2024-11-18 09:36:19,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:19,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 09:36:19,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:19,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 09:36:19,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 09:36:19,171 INFO L87 Difference]: Start difference. First operand 27519 states and 37342 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:36:20,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 09:36:21,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 09:36:23,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 09:36:25,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-18 09:36:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:27,896 INFO L93 Difference]: Finished difference Result 54952 states and 74590 transitions. [2024-11-18 09:36:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:36:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 463 [2024-11-18 09:36:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:27,962 INFO L225 Difference]: With dead ends: 54952 [2024-11-18 09:36:27,988 INFO L226 Difference]: Without dead ends: 27793 [2024-11-18 09:36:28,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-18 09:36:28,003 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 344 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:28,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1620 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-18 09:36:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27793 states. [2024-11-18 09:36:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27793 to 27615. [2024-11-18 09:36:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27615 states, 27546 states have (on average 1.355804835547811) internal successors, (37347), 27554 states have internal predecessors, (37347), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 09:36:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27615 states to 27615 states and 37469 transitions. [2024-11-18 09:36:28,534 INFO L78 Accepts]: Start accepts. Automaton has 27615 states and 37469 transitions. Word has length 463 [2024-11-18 09:36:28,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:28,535 INFO L471 AbstractCegarLoop]: Abstraction has 27615 states and 37469 transitions. [2024-11-18 09:36:28,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-18 09:36:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 27615 states and 37469 transitions. [2024-11-18 09:36:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 09:36:28,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:28,614 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:28,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-18 09:36:28,614 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:28,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1536279133, now seen corresponding path program 1 times [2024-11-18 09:36:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:28,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519887275] [2024-11-18 09:36:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2024-11-18 09:36:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519887275] [2024-11-18 09:36:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519887275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 09:36:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640371134] [2024-11-18 09:36:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:29,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:36:29,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:36:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:36:29,846 INFO L87 Difference]: Start difference. First operand 27615 states and 37469 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:30,599 INFO L93 Difference]: Finished difference Result 130602 states and 177351 transitions. [2024-11-18 09:36:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:36:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-18 09:36:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:30,712 INFO L225 Difference]: With dead ends: 130602 [2024-11-18 09:36:30,712 INFO L226 Difference]: Without dead ends: 103456 [2024-11-18 09:36:30,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:36:30,730 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 564 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:30,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1905 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:36:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103456 states. [2024-11-18 09:36:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103456 to 31967. [2024-11-18 09:36:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31967 states, 31898 states have (on average 1.3393629694651703) internal successors, (42723), 31906 states have internal predecessors, (42723), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 09:36:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31967 states to 31967 states and 42845 transitions. [2024-11-18 09:36:31,507 INFO L78 Accepts]: Start accepts. Automaton has 31967 states and 42845 transitions. Word has length 487 [2024-11-18 09:36:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:31,507 INFO L471 AbstractCegarLoop]: Abstraction has 31967 states and 42845 transitions. [2024-11-18 09:36:31,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31967 states and 42845 transitions. [2024-11-18 09:36:31,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 09:36:31,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:31,549 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:31,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-18 09:36:31,549 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:31,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:31,550 INFO L85 PathProgramCache]: Analyzing trace with hash -650228227, now seen corresponding path program 1 times [2024-11-18 09:36:31,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:31,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422021610] [2024-11-18 09:36:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2024-11-18 09:36:32,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422021610] [2024-11-18 09:36:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422021610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:36:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869470280] [2024-11-18 09:36:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:32,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:36:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:36:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:36:32,438 INFO L87 Difference]: Start difference. First operand 31967 states and 42845 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:32,716 INFO L93 Difference]: Finished difference Result 83433 states and 112234 transitions. [2024-11-18 09:36:32,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:36:32,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-18 09:36:32,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:32,775 INFO L225 Difference]: With dead ends: 83433 [2024-11-18 09:36:32,775 INFO L226 Difference]: Without dead ends: 51935 [2024-11-18 09:36:32,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:36:32,810 INFO L432 NwaCegarLoop]: 317 mSDtfsCounter, 147 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:32,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 931 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:36:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51935 states. [2024-11-18 09:36:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51935 to 35039. [2024-11-18 09:36:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35039 states, 34970 states have (on average 1.3095510437517872) internal successors, (45795), 34978 states have internal predecessors, (45795), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 09:36:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35039 states to 35039 states and 45917 transitions. [2024-11-18 09:36:33,259 INFO L78 Accepts]: Start accepts. Automaton has 35039 states and 45917 transitions. Word has length 487 [2024-11-18 09:36:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:33,260 INFO L471 AbstractCegarLoop]: Abstraction has 35039 states and 45917 transitions. [2024-11-18 09:36:33,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35039 states and 45917 transitions. [2024-11-18 09:36:33,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 09:36:33,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:33,290 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:33,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-18 09:36:33,290 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:33,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1643042163, now seen corresponding path program 1 times [2024-11-18 09:36:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:33,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701911456] [2024-11-18 09:36:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2024-11-18 09:36:34,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:34,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701911456] [2024-11-18 09:36:34,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701911456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:34,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:34,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 09:36:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080855901] [2024-11-18 09:36:34,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:34,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:36:34,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:36:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:36:34,361 INFO L87 Difference]: Start difference. First operand 35039 states and 45917 transitions. Second operand has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:35,018 INFO L93 Difference]: Finished difference Result 138538 states and 184263 transitions. [2024-11-18 09:36:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:36:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-18 09:36:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:35,370 INFO L225 Difference]: With dead ends: 138538 [2024-11-18 09:36:35,370 INFO L226 Difference]: Without dead ends: 103968 [2024-11-18 09:36:35,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:36:35,389 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 314 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:35,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 2233 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 09:36:35,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103968 states. [2024-11-18 09:36:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103968 to 50143. [2024-11-18 09:36:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50143 states, 50074 states have (on average 1.3286535926828293) internal successors, (66531), 50082 states have internal predecessors, (66531), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 09:36:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50143 states to 50143 states and 66653 transitions. [2024-11-18 09:36:36,180 INFO L78 Accepts]: Start accepts. Automaton has 50143 states and 66653 transitions. Word has length 487 [2024-11-18 09:36:36,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:36,181 INFO L471 AbstractCegarLoop]: Abstraction has 50143 states and 66653 transitions. [2024-11-18 09:36:36,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.5) internal successors, (228), 8 states have internal predecessors, (228), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:36,181 INFO L276 IsEmpty]: Start isEmpty. Operand 50143 states and 66653 transitions. [2024-11-18 09:36:36,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 09:36:36,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:36,227 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:36,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-18 09:36:36,227 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:36,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1875677579, now seen corresponding path program 1 times [2024-11-18 09:36:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251988111] [2024-11-18 09:36:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2024-11-18 09:36:37,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251988111] [2024-11-18 09:36:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251988111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:37,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:37,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:36:37,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694437816] [2024-11-18 09:36:37,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:37,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:36:37,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:36:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:36:37,069 INFO L87 Difference]: Start difference. First operand 50143 states and 66653 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:37,611 INFO L93 Difference]: Finished difference Result 100585 states and 133738 transitions. [2024-11-18 09:36:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:36:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-18 09:36:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:37,662 INFO L225 Difference]: With dead ends: 100585 [2024-11-18 09:36:37,662 INFO L226 Difference]: Without dead ends: 50911 [2024-11-18 09:36:37,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:36:37,690 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:37,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1055 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:36:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50911 states. [2024-11-18 09:36:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50911 to 50655. [2024-11-18 09:36:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50655 states, 50586 states have (on average 1.325327165618946) internal successors, (67043), 50594 states have internal predecessors, (67043), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 09:36:38,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50655 states to 50655 states and 67165 transitions. [2024-11-18 09:36:38,604 INFO L78 Accepts]: Start accepts. Automaton has 50655 states and 67165 transitions. Word has length 487 [2024-11-18 09:36:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:38,605 INFO L471 AbstractCegarLoop]: Abstraction has 50655 states and 67165 transitions. [2024-11-18 09:36:38,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 50655 states and 67165 transitions. [2024-11-18 09:36:38,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 09:36:38,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:38,653 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:38,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-18 09:36:38,653 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:38,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash 560881655, now seen corresponding path program 1 times [2024-11-18 09:36:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:38,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950497067] [2024-11-18 09:36:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:38,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2024-11-18 09:36:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950497067] [2024-11-18 09:36:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950497067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:39,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 09:36:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904479479] [2024-11-18 09:36:39,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:39,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 09:36:39,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:39,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 09:36:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 09:36:39,600 INFO L87 Difference]: Start difference. First operand 50655 states and 67165 transitions. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:40,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:40,479 INFO L93 Difference]: Finished difference Result 155178 states and 205511 transitions. [2024-11-18 09:36:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 09:36:40,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-18 09:36:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:40,609 INFO L225 Difference]: With dead ends: 155178 [2024-11-18 09:36:40,609 INFO L226 Difference]: Without dead ends: 104992 [2024-11-18 09:36:40,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:36:40,656 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 432 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:40,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1921 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 09:36:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104992 states. [2024-11-18 09:36:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104992 to 50655. [2024-11-18 09:36:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50655 states, 50586 states have (on average 1.3202664768908394) internal successors, (66787), 50594 states have internal predecessors, (66787), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61) [2024-11-18 09:36:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50655 states to 50655 states and 66909 transitions. [2024-11-18 09:36:41,913 INFO L78 Accepts]: Start accepts. Automaton has 50655 states and 66909 transitions. Word has length 487 [2024-11-18 09:36:41,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:36:41,915 INFO L471 AbstractCegarLoop]: Abstraction has 50655 states and 66909 transitions. [2024-11-18 09:36:41,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 states have internal predecessors, (218), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:41,915 INFO L276 IsEmpty]: Start isEmpty. Operand 50655 states and 66909 transitions. [2024-11-18 09:36:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-18 09:36:41,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:36:41,963 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:36:41,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-18 09:36:41,963 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:36:41,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:36:41,964 INFO L85 PathProgramCache]: Analyzing trace with hash 337465981, now seen corresponding path program 1 times [2024-11-18 09:36:41,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:36:41,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077561274] [2024-11-18 09:36:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:36:41,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:36:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:36:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2024-11-18 09:36:42,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:36:42,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077561274] [2024-11-18 09:36:42,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077561274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:36:42,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:36:42,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:36:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367471532] [2024-11-18 09:36:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:36:42,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:36:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:36:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:36:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:36:42,390 INFO L87 Difference]: Start difference. First operand 50655 states and 66909 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 09:36:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:36:42,988 INFO L93 Difference]: Finished difference Result 101353 states and 133994 transitions. [2024-11-18 09:36:42,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:36:42,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 487 [2024-11-18 09:36:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:36:43,047 INFO L225 Difference]: With dead ends: 101353 [2024-11-18 09:36:43,048 INFO L226 Difference]: Without dead ends: 51167 [2024-11-18 09:36:43,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:36:43,086 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:36:43,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1057 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:36:43,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51167 states. [2024-11-18 09:36:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51167 to 51167. [2024-11-18 09:36:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51167 states, 51098 states have (on average 1.3170574190770676) internal successors, (67299), 51106 states have internal predecessors, (67299), 61 states have call successors, (61), 7 states have call predecessors, (61), 7 states have return successors, (61), 55 states have call predecessors, (61), 61 states have call successors, (61)