./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-08 10:24:49,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 10:24:49,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 10:24:49,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 10:24:49,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 10:24:49,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 10:24:49,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 10:24:49,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 10:24:49,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 10:24:49,762 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 10:24:49,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 10:24:49,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 10:24:49,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 10:24:49,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 10:24:49,764 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 10:24:49,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 10:24:49,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 10:24:49,765 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 10:24:49,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 10:24:49,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 10:24:49,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 10:24:49,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 10:24:49,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 10:24:49,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 10:24:49,768 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 10:24:49,768 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 10:24:49,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 10:24:49,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 10:24:49,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 10:24:49,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 10:24:49,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 10:24:49,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 10:24:49,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:24:49,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 10:24:49,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 10:24:49,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 10:24:49,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 10:24:49,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 10:24:49,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 10:24:49,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 10:24:49,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 10:24:49,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 10:24:49,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2024-11-08 10:24:50,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 10:24:50,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 10:24:50,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 10:24:50,047 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 10:24:50,047 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 10:24:50,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/4SB.i [2024-11-08 10:24:51,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 10:24:51,765 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 10:24:51,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i [2024-11-08 10:24:51,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef822e061/4bcafddb9ef04c1aa7c84ce867605636/FLAG2f6442f8f [2024-11-08 10:24:51,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef822e061/4bcafddb9ef04c1aa7c84ce867605636 [2024-11-08 10:24:51,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 10:24:51,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 10:24:51,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 10:24:51,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 10:24:51,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 10:24:51,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:24:51" (1/1) ... [2024-11-08 10:24:51,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2257243d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:51, skipping insertion in model container [2024-11-08 10:24:51,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 10:24:51" (1/1) ... [2024-11-08 10:24:51,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 10:24:52,250 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] [2024-11-08 10:24:52,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:24:52,274 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 10:24:52,387 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] [2024-11-08 10:24:52,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 10:24:52,414 INFO L204 MainTranslator]: Completed translation [2024-11-08 10:24:52,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52 WrapperNode [2024-11-08 10:24:52,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 10:24:52,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 10:24:52,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 10:24:52,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 10:24:52,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,538 INFO L138 Inliner]: procedures = 27, calls = 680, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1638 [2024-11-08 10:24:52,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 10:24:52,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 10:24:52,541 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 10:24:52,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 10:24:52,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,619 INFO L175 MemorySlicer]: Split 488 memory accesses to 16 slices as follows [15, 11, 13, 13, 45, 10, 3, 13, 13, 60, 96, 10, 152, 10, 12, 12]. 31 percent of accesses are in the largest equivalence class. The 36 initializations are split as follows [0, 0, 5, 5, 0, 0, 0, 5, 5, 0, 0, 0, 0, 1, 10, 5]. The 171 writes are split as follows [5, 5, 2, 2, 15, 5, 2, 2, 2, 20, 20, 5, 80, 3, 1, 2]. [2024-11-08 10:24:52,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,685 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 10:24:52,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 10:24:52,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 10:24:52,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 10:24:52,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (1/1) ... [2024-11-08 10:24:52,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 10:24:52,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:52,766 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) [2024-11-08 10:24:52,770 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 [2024-11-08 10:24:52,820 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2024-11-08 10:24:52,820 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2024-11-08 10:24:52,821 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2024-11-08 10:24:52,821 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2024-11-08 10:24:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2024-11-08 10:24:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2024-11-08 10:24:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2024-11-08 10:24:52,822 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2024-11-08 10:24:52,822 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2024-11-08 10:24:52,824 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2024-11-08 10:24:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 10:24:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 10:24:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 10:24:52,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-08 10:24:52,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-08 10:24:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-08 10:24:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-08 10:24:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-08 10:24:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-08 10:24:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-08 10:24:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-11-08 10:24:52,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 10:24:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 10:24:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 10:24:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 10:24:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 10:24:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-08 10:24:52,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-08 10:24:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-08 10:24:52,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-08 10:24:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-08 10:24:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-08 10:24:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-08 10:24:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-08 10:24:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-08 10:24:52,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-08 10:24:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-08 10:24:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 10:24:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 10:24:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 10:24:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 10:24:52,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 10:24:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-08 10:24:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-08 10:24:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-08 10:24:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-08 10:24:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-08 10:24:52,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2024-11-08 10:24:52,833 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2024-11-08 10:24:52,833 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2024-11-08 10:24:52,834 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2024-11-08 10:24:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 10:24:52,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 10:24:52,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 10:24:53,095 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 10:24:53,098 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 10:24:55,385 INFO L? ?]: Removed 214 outVars from TransFormulas that were not future-live. [2024-11-08 10:24:55,385 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 10:24:55,407 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 10:24:55,407 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-08 10:24:55,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:24:55 BoogieIcfgContainer [2024-11-08 10:24:55,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 10:24:55,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 10:24:55,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 10:24:55,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 10:24:55,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 10:24:51" (1/3) ... [2024-11-08 10:24:55,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62244541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:24:55, skipping insertion in model container [2024-11-08 10:24:55,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 10:24:52" (2/3) ... [2024-11-08 10:24:55,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62244541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 10:24:55, skipping insertion in model container [2024-11-08 10:24:55,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 10:24:55" (3/3) ... [2024-11-08 10:24:55,421 INFO L112 eAbstractionObserver]: Analyzing ICFG 4SB.i [2024-11-08 10:24:55,438 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 10:24:55,439 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 10:24:55,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 10:24:55,523 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;@3dc35130, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 10:24:55,524 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 10:24:55,530 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) [2024-11-08 10:24:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-08 10:24:55,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:55,547 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] [2024-11-08 10:24:55,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:55,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash -992657394, now seen corresponding path program 1 times [2024-11-08 10:24:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283979661] [2024-11-08 10:24:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-08 10:24:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-08 10:24:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-08 10:24:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:24:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 10:24:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-08 10:24:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 10:24:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283979661] [2024-11-08 10:24:56,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283979661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:24:56,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 10:24:56,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 10:24:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718338034] [2024-11-08 10:24:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:24:56,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:24:56,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:24:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:24:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 10:24:56,842 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 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:24:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:24:59,224 INFO L93 Difference]: Finished difference Result 564 states and 894 transitions. [2024-11-08 10:24:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:24:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 2 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 [2024-11-08 10:24:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:24:59,242 INFO L225 Difference]: With dead ends: 564 [2024-11-08 10:24:59,242 INFO L226 Difference]: Without dead ends: 271 [2024-11-08 10:24:59,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 10:24:59,250 INFO L432 NwaCegarLoop]: 348 mSDtfsCounter, 66 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 10:24:59,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1201 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 10:24:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-08 10:24:59,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2024-11-08 10:24:59,322 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) [2024-11-08 10:24:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 359 transitions. [2024-11-08 10:24:59,329 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 359 transitions. Word has length 74 [2024-11-08 10:24:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:24:59,330 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 359 transitions. [2024-11-08 10:24:59,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-08 10:24:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 359 transitions. [2024-11-08 10:24:59,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 10:24:59,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:24:59,340 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] [2024-11-08 10:24:59,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 10:24:59,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:24:59,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:24:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 456113258, now seen corresponding path program 1 times [2024-11-08 10:24:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:24:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638346475] [2024-11-08 10:24:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:24:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:24:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 10:24:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-08 10:24:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:24:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-08 10:24:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-08 10:24:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:24:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 10:24:59,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:24:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638346475] [2024-11-08 10:24:59,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638346475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:24:59,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872751649] [2024-11-08 10:24:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:24:59,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:24:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:24:59,974 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) [2024-11-08 10:24:59,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 10:25:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:00,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:00,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 10:25:00,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872751649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:00,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 10:25:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89155482] [2024-11-08 10:25:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:00,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:25:00,491 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) [2024-11-08 10:25:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:00,526 INFO L93 Difference]: Finished difference Result 530 states and 715 transitions. [2024-11-08 10:25:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:00,527 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 [2024-11-08 10:25:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:00,531 INFO L225 Difference]: With dead ends: 530 [2024-11-08 10:25:00,532 INFO L226 Difference]: Without dead ends: 270 [2024-11-08 10:25:00,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 10:25:00,536 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 [2024-11-08 10:25:00,536 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] [2024-11-08 10:25:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-08 10:25:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2024-11-08 10:25:00,554 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) [2024-11-08 10:25:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 360 transitions. [2024-11-08 10:25:00,556 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 360 transitions. Word has length 77 [2024-11-08 10:25:00,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:00,556 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 360 transitions. [2024-11-08 10:25:00,559 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) [2024-11-08 10:25:00,560 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 360 transitions. [2024-11-08 10:25:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 10:25:00,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:00,566 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] [2024-11-08 10:25:00,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 10:25:00,767 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 [2024-11-08 10:25:00,767 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:00,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1437341938, now seen corresponding path program 1 times [2024-11-08 10:25:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:00,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902138718] [2024-11-08 10:25:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 10:25:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 10:25:01,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902138718] [2024-11-08 10:25:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902138718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559721128] [2024-11-08 10:25:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:01,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:01,373 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) [2024-11-08 10:25:01,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 10:25:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:01,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:01,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-08 10:25:01,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:01,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559721128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:01,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:01,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:01,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592756290] [2024-11-08 10:25:01,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:01,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:01,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:01,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:01,968 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) [2024-11-08 10:25:02,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:02,011 INFO L93 Difference]: Finished difference Result 517 states and 693 transitions. [2024-11-08 10:25:02,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:02,012 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 [2024-11-08 10:25:02,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:02,014 INFO L225 Difference]: With dead ends: 517 [2024-11-08 10:25:02,015 INFO L226 Difference]: Without dead ends: 276 [2024-11-08 10:25:02,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:02,017 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 [2024-11-08 10:25:02,018 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] [2024-11-08 10:25:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-08 10:25:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2024-11-08 10:25:02,049 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) [2024-11-08 10:25:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 361 transitions. [2024-11-08 10:25:02,054 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 361 transitions. Word has length 85 [2024-11-08 10:25:02,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:02,055 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 361 transitions. [2024-11-08 10:25:02,055 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) [2024-11-08 10:25:02,056 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 361 transitions. [2024-11-08 10:25:02,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 10:25:02,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:02,058 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] [2024-11-08 10:25:02,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 10:25:02,264 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 [2024-11-08 10:25:02,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:02,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1782099748, now seen corresponding path program 1 times [2024-11-08 10:25:02,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:02,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083026882] [2024-11-08 10:25:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-08 10:25:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 10:25:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083026882] [2024-11-08 10:25:02,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083026882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890634604] [2024-11-08 10:25:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:02,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:02,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:02,851 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) [2024-11-08 10:25:02,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 10:25:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:03,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:03,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 10:25:03,365 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:03,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890634604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:03,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:03,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:03,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780159184] [2024-11-08 10:25:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:03,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:03,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:03,368 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) [2024-11-08 10:25:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:03,404 INFO L93 Difference]: Finished difference Result 510 states and 683 transitions. [2024-11-08 10:25:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:03,405 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 [2024-11-08 10:25:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:03,407 INFO L225 Difference]: With dead ends: 510 [2024-11-08 10:25:03,408 INFO L226 Difference]: Without dead ends: 277 [2024-11-08 10:25:03,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:03,409 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 [2024-11-08 10:25:03,410 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] [2024-11-08 10:25:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-08 10:25:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2024-11-08 10:25:03,419 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) [2024-11-08 10:25:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2024-11-08 10:25:03,421 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 88 [2024-11-08 10:25:03,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:03,421 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2024-11-08 10:25:03,422 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) [2024-11-08 10:25:03,422 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2024-11-08 10:25:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 10:25:03,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:03,424 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] [2024-11-08 10:25:03,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 10:25:03,624 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 [2024-11-08 10:25:03,625 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:03,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2144473698, now seen corresponding path program 1 times [2024-11-08 10:25:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004661848] [2024-11-08 10:25:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:03,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 10:25:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 10:25:04,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004661848] [2024-11-08 10:25:04,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004661848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:04,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173185243] [2024-11-08 10:25:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:04,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:04,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:04,269 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) [2024-11-08 10:25:04,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 10:25:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:04,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:04,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-08 10:25:04,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:04,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173185243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:04,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:04,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980716044] [2024-11-08 10:25:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:04,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:04,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:04,741 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) [2024-11-08 10:25:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:04,791 INFO L93 Difference]: Finished difference Result 503 states and 673 transitions. [2024-11-08 10:25:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:04,793 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 [2024-11-08 10:25:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:04,798 INFO L225 Difference]: With dead ends: 503 [2024-11-08 10:25:04,798 INFO L226 Difference]: Without dead ends: 278 [2024-11-08 10:25:04,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:04,800 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 [2024-11-08 10:25:04,800 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] [2024-11-08 10:25:04,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-08 10:25:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 272. [2024-11-08 10:25:04,814 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) [2024-11-08 10:25:04,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 363 transitions. [2024-11-08 10:25:04,817 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 363 transitions. Word has length 91 [2024-11-08 10:25:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:04,818 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 363 transitions. [2024-11-08 10:25:04,818 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) [2024-11-08 10:25:04,818 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 363 transitions. [2024-11-08 10:25:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 10:25:04,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:04,820 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] [2024-11-08 10:25:04,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:05,020 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 [2024-11-08 10:25:05,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:05,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash 686702796, now seen corresponding path program 1 times [2024-11-08 10:25:05,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:05,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015104829] [2024-11-08 10:25:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:05,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 10:25:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 10:25:05,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015104829] [2024-11-08 10:25:05,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015104829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:05,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904881103] [2024-11-08 10:25:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:05,598 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) [2024-11-08 10:25:05,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 10:25:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:06,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 10:25:06,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904881103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:06,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:06,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:06,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839660271] [2024-11-08 10:25:06,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:06,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:06,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:06,155 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) [2024-11-08 10:25:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:06,192 INFO L93 Difference]: Finished difference Result 492 states and 660 transitions. [2024-11-08 10:25:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:06,193 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 [2024-11-08 10:25:06,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:06,195 INFO L225 Difference]: With dead ends: 492 [2024-11-08 10:25:06,196 INFO L226 Difference]: Without dead ends: 279 [2024-11-08 10:25:06,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:06,197 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 [2024-11-08 10:25:06,198 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] [2024-11-08 10:25:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-08 10:25:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 273. [2024-11-08 10:25:06,207 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) [2024-11-08 10:25:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 364 transitions. [2024-11-08 10:25:06,209 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 364 transitions. Word has length 94 [2024-11-08 10:25:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:06,209 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 364 transitions. [2024-11-08 10:25:06,210 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) [2024-11-08 10:25:06,210 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 364 transitions. [2024-11-08 10:25:06,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 10:25:06,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:06,213 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] [2024-11-08 10:25:06,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 10:25:06,413 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 [2024-11-08 10:25:06,414 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:06,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash -261696558, now seen corresponding path program 1 times [2024-11-08 10:25:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:06,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114206283] [2024-11-08 10:25:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 10:25:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114206283] [2024-11-08 10:25:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114206283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362166405] [2024-11-08 10:25:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:06,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:06,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:06,980 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) [2024-11-08 10:25:06,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 10:25:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:07,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:07,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 10:25:07,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:07,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362166405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:07,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:07,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:07,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882732182] [2024-11-08 10:25:07,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:07,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:07,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:07,519 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) [2024-11-08 10:25:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:07,665 INFO L93 Difference]: Finished difference Result 341 states and 471 transitions. [2024-11-08 10:25:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:07,666 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 [2024-11-08 10:25:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:07,669 INFO L225 Difference]: With dead ends: 341 [2024-11-08 10:25:07,670 INFO L226 Difference]: Without dead ends: 331 [2024-11-08 10:25:07,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:07,672 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 [2024-11-08 10:25:07,673 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] [2024-11-08 10:25:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-08 10:25:07,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 274. [2024-11-08 10:25:07,685 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) [2024-11-08 10:25:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2024-11-08 10:25:07,687 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 97 [2024-11-08 10:25:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:07,688 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2024-11-08 10:25:07,689 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) [2024-11-08 10:25:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2024-11-08 10:25:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 10:25:07,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:07,691 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] [2024-11-08 10:25:07,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:07,891 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 [2024-11-08 10:25:07,892 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:07,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1945761786, now seen corresponding path program 1 times [2024-11-08 10:25:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:07,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956155092] [2024-11-08 10:25:07,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:07,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 10:25:08,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:08,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956155092] [2024-11-08 10:25:08,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956155092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:08,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135123023] [2024-11-08 10:25:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:08,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:08,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:08,342 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) [2024-11-08 10:25:08,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 10:25:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:08,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:08,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 10:25:08,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135123023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360428160] [2024-11-08 10:25:08,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:08,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:08,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:08,985 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) [2024-11-08 10:25:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:09,005 INFO L93 Difference]: Finished difference Result 342 states and 472 transitions. [2024-11-08 10:25:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:09,006 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 [2024-11-08 10:25:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:09,008 INFO L225 Difference]: With dead ends: 342 [2024-11-08 10:25:09,008 INFO L226 Difference]: Without dead ends: 332 [2024-11-08 10:25:09,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:09,011 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 [2024-11-08 10:25:09,011 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] [2024-11-08 10:25:09,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-08 10:25:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2024-11-08 10:25:09,022 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) [2024-11-08 10:25:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2024-11-08 10:25:09,024 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 107 [2024-11-08 10:25:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:09,024 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2024-11-08 10:25:09,024 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) [2024-11-08 10:25:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2024-11-08 10:25:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 10:25:09,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:09,026 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] [2024-11-08 10:25:09,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:09,226 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 [2024-11-08 10:25:09,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:09,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:09,227 INFO L85 PathProgramCache]: Analyzing trace with hash -815947690, now seen corresponding path program 1 times [2024-11-08 10:25:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801680081] [2024-11-08 10:25:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:09,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 10:25:09,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801680081] [2024-11-08 10:25:09,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801680081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:09,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897172444] [2024-11-08 10:25:09,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:09,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:09,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:09,804 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) [2024-11-08 10:25:09,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 10:25:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:10,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 10:25:10,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:10,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897172444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:10,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:10,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:10,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237001511] [2024-11-08 10:25:10,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:10,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:10,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:10,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:10,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:10,364 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) [2024-11-08 10:25:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:10,380 INFO L93 Difference]: Finished difference Result 457 states and 659 transitions. [2024-11-08 10:25:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:10,381 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 [2024-11-08 10:25:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:10,383 INFO L225 Difference]: With dead ends: 457 [2024-11-08 10:25:10,383 INFO L226 Difference]: Without dead ends: 447 [2024-11-08 10:25:10,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:10,383 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 [2024-11-08 10:25:10,384 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] [2024-11-08 10:25:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-08 10:25:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2024-11-08 10:25:10,393 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) [2024-11-08 10:25:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 646 transitions. [2024-11-08 10:25:10,395 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 646 transitions. Word has length 113 [2024-11-08 10:25:10,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:10,395 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 646 transitions. [2024-11-08 10:25:10,395 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) [2024-11-08 10:25:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 646 transitions. [2024-11-08 10:25:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:10,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:10,397 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] [2024-11-08 10:25:10,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:10,597 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 [2024-11-08 10:25:10,598 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:10,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:10,598 INFO L85 PathProgramCache]: Analyzing trace with hash -449081176, now seen corresponding path program 1 times [2024-11-08 10:25:10,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130559151] [2024-11-08 10:25:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:10,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:11,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130559151] [2024-11-08 10:25:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130559151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629348017] [2024-11-08 10:25:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:11,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:11,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:11,043 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) [2024-11-08 10:25:11,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 10:25:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:11,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:11,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:11,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629348017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:11,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:11,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184353093] [2024-11-08 10:25:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:11,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:11,745 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) [2024-11-08 10:25:11,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:11,772 INFO L93 Difference]: Finished difference Result 701 states and 1051 transitions. [2024-11-08 10:25:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:11,773 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 [2024-11-08 10:25:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:11,775 INFO L225 Difference]: With dead ends: 701 [2024-11-08 10:25:11,775 INFO L226 Difference]: Without dead ends: 459 [2024-11-08 10:25:11,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:11,776 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 [2024-11-08 10:25:11,777 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] [2024-11-08 10:25:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-08 10:25:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 455. [2024-11-08 10:25:11,787 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) [2024-11-08 10:25:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 654 transitions. [2024-11-08 10:25:11,789 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 654 transitions. Word has length 151 [2024-11-08 10:25:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:11,790 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 654 transitions. [2024-11-08 10:25:11,790 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) [2024-11-08 10:25:11,790 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 654 transitions. [2024-11-08 10:25:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:11,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:11,792 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] [2024-11-08 10:25:11,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 10:25:11,992 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 [2024-11-08 10:25:11,992 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:11,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash 252518698, now seen corresponding path program 1 times [2024-11-08 10:25:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:11,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452970749] [2024-11-08 10:25:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:12,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452970749] [2024-11-08 10:25:12,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452970749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:12,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181078939] [2024-11-08 10:25:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:12,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:12,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:12,517 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) [2024-11-08 10:25:12,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 10:25:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:13,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:13,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181078939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:13,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:13,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530461598] [2024-11-08 10:25:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:13,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:13,237 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) [2024-11-08 10:25:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:13,262 INFO L93 Difference]: Finished difference Result 717 states and 1067 transitions. [2024-11-08 10:25:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:13,263 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 [2024-11-08 10:25:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:13,265 INFO L225 Difference]: With dead ends: 717 [2024-11-08 10:25:13,265 INFO L226 Difference]: Without dead ends: 467 [2024-11-08 10:25:13,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:13,266 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 [2024-11-08 10:25:13,267 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] [2024-11-08 10:25:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-08 10:25:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 463. [2024-11-08 10:25:13,275 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) [2024-11-08 10:25:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 662 transitions. [2024-11-08 10:25:13,277 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 662 transitions. Word has length 151 [2024-11-08 10:25:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:13,278 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 662 transitions. [2024-11-08 10:25:13,278 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) [2024-11-08 10:25:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 662 transitions. [2024-11-08 10:25:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:13,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:13,280 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] [2024-11-08 10:25:13,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 10:25:13,480 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 [2024-11-08 10:25:13,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:13,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1638722092, now seen corresponding path program 1 times [2024-11-08 10:25:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766323968] [2024-11-08 10:25:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:13,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:13,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:14,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:14,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766323968] [2024-11-08 10:25:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766323968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:14,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075364336] [2024-11-08 10:25:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:14,026 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) [2024-11-08 10:25:14,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 10:25:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:14,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:14,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:14,727 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:14,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075364336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630354114] [2024-11-08 10:25:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:14,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:14,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:14,729 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) [2024-11-08 10:25:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:14,757 INFO L93 Difference]: Finished difference Result 733 states and 1087 transitions. [2024-11-08 10:25:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:14,758 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 [2024-11-08 10:25:14,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:14,760 INFO L225 Difference]: With dead ends: 733 [2024-11-08 10:25:14,760 INFO L226 Difference]: Without dead ends: 475 [2024-11-08 10:25:14,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:14,762 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 [2024-11-08 10:25:14,762 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] [2024-11-08 10:25:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-08 10:25:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-11-08 10:25:14,773 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) [2024-11-08 10:25:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 674 transitions. [2024-11-08 10:25:14,775 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 674 transitions. Word has length 151 [2024-11-08 10:25:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:14,775 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 674 transitions. [2024-11-08 10:25:14,776 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) [2024-11-08 10:25:14,776 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 674 transitions. [2024-11-08 10:25:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:14,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:14,778 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] [2024-11-08 10:25:14,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 10:25:14,982 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 [2024-11-08 10:25:14,983 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:14,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -733017170, now seen corresponding path program 1 times [2024-11-08 10:25:14,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836710200] [2024-11-08 10:25:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:14,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:15,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836710200] [2024-11-08 10:25:15,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836710200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:15,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623347548] [2024-11-08 10:25:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:15,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:15,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:15,462 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) [2024-11-08 10:25:15,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 10:25:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:16,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:16,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:16,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623347548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:16,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:16,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:16,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109466016] [2024-11-08 10:25:16,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:16,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:16,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:16,153 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) [2024-11-08 10:25:16,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:16,181 INFO L93 Difference]: Finished difference Result 757 states and 1107 transitions. [2024-11-08 10:25:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:16,182 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 [2024-11-08 10:25:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:16,184 INFO L225 Difference]: With dead ends: 757 [2024-11-08 10:25:16,184 INFO L226 Difference]: Without dead ends: 487 [2024-11-08 10:25:16,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:16,186 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 [2024-11-08 10:25:16,186 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] [2024-11-08 10:25:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-08 10:25:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 483. [2024-11-08 10:25:16,195 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) [2024-11-08 10:25:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 682 transitions. [2024-11-08 10:25:16,197 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 682 transitions. Word has length 151 [2024-11-08 10:25:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:16,198 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 682 transitions. [2024-11-08 10:25:16,198 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) [2024-11-08 10:25:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 682 transitions. [2024-11-08 10:25:16,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:16,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:16,200 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] [2024-11-08 10:25:16,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:16,400 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 [2024-11-08 10:25:16,401 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:16,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1756511792, now seen corresponding path program 1 times [2024-11-08 10:25:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431790709] [2024-11-08 10:25:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:16,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431790709] [2024-11-08 10:25:16,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431790709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:16,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330969974] [2024-11-08 10:25:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:16,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:16,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:16,900 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) [2024-11-08 10:25:16,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 10:25:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:17,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:17,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:17,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:17,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330969974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:17,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:17,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:17,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133387587] [2024-11-08 10:25:17,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:17,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:17,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:17,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:17,620 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) [2024-11-08 10:25:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:17,646 INFO L93 Difference]: Finished difference Result 773 states and 1127 transitions. [2024-11-08 10:25:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:17,646 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 [2024-11-08 10:25:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:17,649 INFO L225 Difference]: With dead ends: 773 [2024-11-08 10:25:17,649 INFO L226 Difference]: Without dead ends: 495 [2024-11-08 10:25:17,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:17,650 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 [2024-11-08 10:25:17,650 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] [2024-11-08 10:25:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-08 10:25:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2024-11-08 10:25:17,659 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) [2024-11-08 10:25:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 694 transitions. [2024-11-08 10:25:17,661 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 694 transitions. Word has length 151 [2024-11-08 10:25:17,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:17,661 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 694 transitions. [2024-11-08 10:25:17,661 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) [2024-11-08 10:25:17,662 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 694 transitions. [2024-11-08 10:25:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:17,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:17,663 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] [2024-11-08 10:25:17,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 10:25:17,864 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 [2024-11-08 10:25:17,864 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:17,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2115753678, now seen corresponding path program 1 times [2024-11-08 10:25:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390445824] [2024-11-08 10:25:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:18,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:18,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390445824] [2024-11-08 10:25:18,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390445824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:18,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987346326] [2024-11-08 10:25:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:18,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:18,342 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) [2024-11-08 10:25:18,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 10:25:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:18,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:18,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:18,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987346326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:18,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:18,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716126014] [2024-11-08 10:25:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:18,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:18,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:18,976 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) [2024-11-08 10:25:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:19,002 INFO L93 Difference]: Finished difference Result 797 states and 1147 transitions. [2024-11-08 10:25:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:19,002 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 [2024-11-08 10:25:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:19,005 INFO L225 Difference]: With dead ends: 797 [2024-11-08 10:25:19,005 INFO L226 Difference]: Without dead ends: 507 [2024-11-08 10:25:19,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:19,006 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 [2024-11-08 10:25:19,006 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] [2024-11-08 10:25:19,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-08 10:25:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 503. [2024-11-08 10:25:19,014 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) [2024-11-08 10:25:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 702 transitions. [2024-11-08 10:25:19,016 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 702 transitions. Word has length 151 [2024-11-08 10:25:19,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:19,017 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 702 transitions. [2024-11-08 10:25:19,017 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) [2024-11-08 10:25:19,017 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 702 transitions. [2024-11-08 10:25:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:19,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:19,019 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] [2024-11-08 10:25:19,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 10:25:19,219 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 [2024-11-08 10:25:19,219 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:19,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:19,220 INFO L85 PathProgramCache]: Analyzing trace with hash 899349940, now seen corresponding path program 1 times [2024-11-08 10:25:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:19,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201999430] [2024-11-08 10:25:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:19,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201999430] [2024-11-08 10:25:19,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201999430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:19,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210832063] [2024-11-08 10:25:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:19,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:19,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:19,842 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) [2024-11-08 10:25:19,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 10:25:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:20,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:20,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 10:25:20,529 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:20,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210832063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:20,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:20,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:20,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864729734] [2024-11-08 10:25:20,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:20,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:20,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:20,531 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) [2024-11-08 10:25:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:20,556 INFO L93 Difference]: Finished difference Result 813 states and 1167 transitions. [2024-11-08 10:25:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:20,557 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 [2024-11-08 10:25:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:20,560 INFO L225 Difference]: With dead ends: 813 [2024-11-08 10:25:20,560 INFO L226 Difference]: Without dead ends: 515 [2024-11-08 10:25:20,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:20,562 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 [2024-11-08 10:25:20,562 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] [2024-11-08 10:25:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-08 10:25:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-08 10:25:20,573 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) [2024-11-08 10:25:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 714 transitions. [2024-11-08 10:25:20,575 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 714 transitions. Word has length 151 [2024-11-08 10:25:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:20,576 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 714 transitions. [2024-11-08 10:25:20,576 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) [2024-11-08 10:25:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 714 transitions. [2024-11-08 10:25:20,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 10:25:20,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:20,578 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] [2024-11-08 10:25:20,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 10:25:20,778 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 [2024-11-08 10:25:20,779 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:20,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -527405776, now seen corresponding path program 1 times [2024-11-08 10:25:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:20,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172680685] [2024-11-08 10:25:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:20,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 10:25:21,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172680685] [2024-11-08 10:25:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172680685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93829370] [2024-11-08 10:25:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:21,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:21,302 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) [2024-11-08 10:25:21,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 10:25:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:21,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:21,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 10:25:22,074 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:22,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93829370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:22,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040557249] [2024-11-08 10:25:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:22,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:22,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:22,078 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) [2024-11-08 10:25:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:22,097 INFO L93 Difference]: Finished difference Result 825 states and 1171 transitions. [2024-11-08 10:25:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:22,098 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 [2024-11-08 10:25:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:22,102 INFO L225 Difference]: With dead ends: 825 [2024-11-08 10:25:22,102 INFO L226 Difference]: Without dead ends: 815 [2024-11-08 10:25:22,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:22,104 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 [2024-11-08 10:25:22,104 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] [2024-11-08 10:25:22,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-08 10:25:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2024-11-08 10:25:22,118 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) [2024-11-08 10:25:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1158 transitions. [2024-11-08 10:25:22,122 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1158 transitions. Word has length 151 [2024-11-08 10:25:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:22,123 INFO L471 AbstractCegarLoop]: Abstraction has 815 states and 1158 transitions. [2024-11-08 10:25:22,123 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) [2024-11-08 10:25:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1158 transitions. [2024-11-08 10:25:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 10:25:22,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:22,126 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] [2024-11-08 10:25:22,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 10:25:22,326 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 [2024-11-08 10:25:22,327 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:22,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1251872156, now seen corresponding path program 1 times [2024-11-08 10:25:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966736226] [2024-11-08 10:25:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 10:25:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966736226] [2024-11-08 10:25:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966736226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252758739] [2024-11-08 10:25:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:22,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:22,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:22,876 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) [2024-11-08 10:25:22,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 10:25:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:23,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:23,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-08 10:25:23,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:23,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252758739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:23,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:23,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:23,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767113847] [2024-11-08 10:25:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:23,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:23,669 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) [2024-11-08 10:25:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:23,689 INFO L93 Difference]: Finished difference Result 1425 states and 2059 transitions. [2024-11-08 10:25:23,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:23,689 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 [2024-11-08 10:25:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:23,695 INFO L225 Difference]: With dead ends: 1425 [2024-11-08 10:25:23,695 INFO L226 Difference]: Without dead ends: 1415 [2024-11-08 10:25:23,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:23,697 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 [2024-11-08 10:25:23,697 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] [2024-11-08 10:25:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2024-11-08 10:25:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1415. [2024-11-08 10:25:23,720 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) [2024-11-08 10:25:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2046 transitions. [2024-11-08 10:25:23,725 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2046 transitions. Word has length 161 [2024-11-08 10:25:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:23,725 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 2046 transitions. [2024-11-08 10:25:23,725 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) [2024-11-08 10:25:23,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2046 transitions. [2024-11-08 10:25:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-08 10:25:23,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:23,729 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] [2024-11-08 10:25:23,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 10:25:23,930 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 [2024-11-08 10:25:23,930 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:23,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:23,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1779724118, now seen corresponding path program 1 times [2024-11-08 10:25:23,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:23,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988573338] [2024-11-08 10:25:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:23,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:24,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-08 10:25:24,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988573338] [2024-11-08 10:25:24,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988573338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:24,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086381193] [2024-11-08 10:25:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:24,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:24,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:24,461 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) [2024-11-08 10:25:24,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 10:25:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:25,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-08 10:25:25,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086381193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:25,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379442037] [2024-11-08 10:25:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:25,246 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) [2024-11-08 10:25:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:25,274 INFO L93 Difference]: Finished difference Result 2673 states and 3915 transitions. [2024-11-08 10:25:25,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:25,274 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 [2024-11-08 10:25:25,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:25,280 INFO L225 Difference]: With dead ends: 2673 [2024-11-08 10:25:25,280 INFO L226 Difference]: Without dead ends: 1463 [2024-11-08 10:25:25,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:25,282 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 [2024-11-08 10:25:25,283 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] [2024-11-08 10:25:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2024-11-08 10:25:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2024-11-08 10:25:25,305 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) [2024-11-08 10:25:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2094 transitions. [2024-11-08 10:25:25,309 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2094 transitions. Word has length 205 [2024-11-08 10:25:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:25,309 INFO L471 AbstractCegarLoop]: Abstraction has 1463 states and 2094 transitions. [2024-11-08 10:25:25,310 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) [2024-11-08 10:25:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2094 transitions. [2024-11-08 10:25:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-08 10:25:25,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:25,313 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] [2024-11-08 10:25:25,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 10:25:25,513 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 [2024-11-08 10:25:25,514 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:25,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1335823444, now seen corresponding path program 1 times [2024-11-08 10:25:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343927441] [2024-11-08 10:25:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-08 10:25:25,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343927441] [2024-11-08 10:25:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343927441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600725733] [2024-11-08 10:25:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:25,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:25,954 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) [2024-11-08 10:25:25,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 10:25:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:26,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:26,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-08 10:25:26,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:26,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600725733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:26,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:26,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862096224] [2024-11-08 10:25:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:26,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:26,971 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) [2024-11-08 10:25:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:26,995 INFO L93 Difference]: Finished difference Result 2721 states and 3931 transitions. [2024-11-08 10:25:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:26,996 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 [2024-11-08 10:25:26,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:27,007 INFO L225 Difference]: With dead ends: 2721 [2024-11-08 10:25:27,007 INFO L226 Difference]: Without dead ends: 2711 [2024-11-08 10:25:27,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:27,010 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 [2024-11-08 10:25:27,011 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] [2024-11-08 10:25:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2024-11-08 10:25:27,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2711. [2024-11-08 10:25:27,066 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) [2024-11-08 10:25:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3918 transitions. [2024-11-08 10:25:27,076 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3918 transitions. Word has length 205 [2024-11-08 10:25:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:27,077 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3918 transitions. [2024-11-08 10:25:27,078 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) [2024-11-08 10:25:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3918 transitions. [2024-11-08 10:25:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-08 10:25:27,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:27,085 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] [2024-11-08 10:25:27,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:27,286 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 [2024-11-08 10:25:27,286 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:27,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:27,287 INFO L85 PathProgramCache]: Analyzing trace with hash 850952836, now seen corresponding path program 1 times [2024-11-08 10:25:27,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:27,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233681611] [2024-11-08 10:25:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:27,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-08 10:25:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233681611] [2024-11-08 10:25:27,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233681611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137826808] [2024-11-08 10:25:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:27,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:27,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:27,815 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) [2024-11-08 10:25:27,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 10:25:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:28,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:28,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 10:25:28,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:28,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137826808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:28,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:28,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:28,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20377262] [2024-11-08 10:25:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:28,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:28,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:28,754 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) [2024-11-08 10:25:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:28,787 INFO L93 Difference]: Finished difference Result 5217 states and 7579 transitions. [2024-11-08 10:25:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:28,787 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 [2024-11-08 10:25:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:28,807 INFO L225 Difference]: With dead ends: 5217 [2024-11-08 10:25:28,807 INFO L226 Difference]: Without dead ends: 5207 [2024-11-08 10:25:28,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:28,811 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 [2024-11-08 10:25:28,812 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] [2024-11-08 10:25:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2024-11-08 10:25:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5207. [2024-11-08 10:25:28,925 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) [2024-11-08 10:25:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 7566 transitions. [2024-11-08 10:25:28,937 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 7566 transitions. Word has length 229 [2024-11-08 10:25:28,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:28,938 INFO L471 AbstractCegarLoop]: Abstraction has 5207 states and 7566 transitions. [2024-11-08 10:25:28,938 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) [2024-11-08 10:25:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 7566 transitions. [2024-11-08 10:25:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-08 10:25:28,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:28,950 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] [2024-11-08 10:25:28,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 10:25:29,151 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 [2024-11-08 10:25:29,151 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:29,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:29,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1195580372, now seen corresponding path program 1 times [2024-11-08 10:25:29,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:29,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276161019] [2024-11-08 10:25:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:29,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-08 10:25:29,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:29,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276161019] [2024-11-08 10:25:29,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276161019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:29,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199287377] [2024-11-08 10:25:29,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:29,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:29,642 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) [2024-11-08 10:25:29,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 10:25:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:30,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:30,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2024-11-08 10:25:30,703 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199287377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:30,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:30,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134782757] [2024-11-08 10:25:30,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:30,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:30,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:30,705 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) [2024-11-08 10:25:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:30,754 INFO L93 Difference]: Finished difference Result 10209 states and 14875 transitions. [2024-11-08 10:25:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:30,755 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 [2024-11-08 10:25:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:30,794 INFO L225 Difference]: With dead ends: 10209 [2024-11-08 10:25:30,794 INFO L226 Difference]: Without dead ends: 10199 [2024-11-08 10:25:30,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:30,801 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 [2024-11-08 10:25:30,801 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] [2024-11-08 10:25:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2024-11-08 10:25:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 10199. [2024-11-08 10:25:30,989 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) [2024-11-08 10:25:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 14862 transitions. [2024-11-08 10:25:31,016 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 14862 transitions. Word has length 259 [2024-11-08 10:25:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:31,017 INFO L471 AbstractCegarLoop]: Abstraction has 10199 states and 14862 transitions. [2024-11-08 10:25:31,018 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) [2024-11-08 10:25:31,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 14862 transitions. [2024-11-08 10:25:31,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-08 10:25:31,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:31,038 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] [2024-11-08 10:25:31,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:31,242 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 [2024-11-08 10:25:31,243 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:31,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1898362062, now seen corresponding path program 1 times [2024-11-08 10:25:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360879949] [2024-11-08 10:25:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-08 10:25:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360879949] [2024-11-08 10:25:31,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360879949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820387802] [2024-11-08 10:25:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:31,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:31,710 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) [2024-11-08 10:25:31,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 10:25:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:32,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:32,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2024-11-08 10:25:32,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:32,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820387802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:32,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:32,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-08 10:25:32,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856267466] [2024-11-08 10:25:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:32,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:32,632 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) [2024-11-08 10:25:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:32,717 INFO L93 Difference]: Finished difference Result 20577 states and 30107 transitions. [2024-11-08 10:25:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:32,718 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 [2024-11-08 10:25:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:32,748 INFO L225 Difference]: With dead ends: 20577 [2024-11-08 10:25:32,749 INFO L226 Difference]: Without dead ends: 10583 [2024-11-08 10:25:32,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:32,766 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 [2024-11-08 10:25:32,767 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] [2024-11-08 10:25:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2024-11-08 10:25:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 10583. [2024-11-08 10:25:32,923 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) [2024-11-08 10:25:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10583 states to 10583 states and 15246 transitions. [2024-11-08 10:25:32,945 INFO L78 Accepts]: Start accepts. Automaton has 10583 states and 15246 transitions. Word has length 311 [2024-11-08 10:25:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:32,945 INFO L471 AbstractCegarLoop]: Abstraction has 10583 states and 15246 transitions. [2024-11-08 10:25:32,946 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) [2024-11-08 10:25:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10583 states and 15246 transitions. [2024-11-08 10:25:32,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-08 10:25:32,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:32,966 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] [2024-11-08 10:25:32,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-08 10:25:33,170 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 [2024-11-08 10:25:33,171 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:33,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash 451781196, now seen corresponding path program 1 times [2024-11-08 10:25:33,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:33,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107677899] [2024-11-08 10:25:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-11-08 10:25:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107677899] [2024-11-08 10:25:33,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107677899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:33,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781015149] [2024-11-08 10:25:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:33,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:33,690 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) [2024-11-08 10:25:33,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 10:25:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:34,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:34,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-08 10:25:34,800 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781015149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:34,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:34,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669500550] [2024-11-08 10:25:34,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:34,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:34,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:34,802 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) [2024-11-08 10:25:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:34,905 INFO L93 Difference]: Finished difference Result 20961 states and 30235 transitions. [2024-11-08 10:25:34,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:34,906 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 [2024-11-08 10:25:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:34,945 INFO L225 Difference]: With dead ends: 20961 [2024-11-08 10:25:34,946 INFO L226 Difference]: Without dead ends: 20951 [2024-11-08 10:25:34,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:34,957 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 [2024-11-08 10:25:34,958 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] [2024-11-08 10:25:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20951 states. [2024-11-08 10:25:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20951 to 20951. [2024-11-08 10:25:35,212 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) [2024-11-08 10:25:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 30222 transitions. [2024-11-08 10:25:35,251 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 30222 transitions. Word has length 311 [2024-11-08 10:25:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:35,252 INFO L471 AbstractCegarLoop]: Abstraction has 20951 states and 30222 transitions. [2024-11-08 10:25:35,252 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) [2024-11-08 10:25:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 30222 transitions. [2024-11-08 10:25:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-08 10:25:35,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:35,285 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] [2024-11-08 10:25:35,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:35,485 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 [2024-11-08 10:25:35,486 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:35,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 672270370, now seen corresponding path program 1 times [2024-11-08 10:25:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:35,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770687367] [2024-11-08 10:25:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:36,296 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2024-11-08 10:25:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770687367] [2024-11-08 10:25:36,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770687367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:36,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147870492] [2024-11-08 10:25:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:36,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:36,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:36,302 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) [2024-11-08 10:25:36,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 10:25:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:37,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 10:25:37,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2024-11-08 10:25:37,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:37,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147870492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:37,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-08 10:25:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829484957] [2024-11-08 10:25:37,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 10:25:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 10:25:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:37,292 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) [2024-11-08 10:25:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:37,383 INFO L93 Difference]: Finished difference Result 31585 states and 45723 transitions. [2024-11-08 10:25:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 10:25:37,384 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 [2024-11-08 10:25:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:37,424 INFO L225 Difference]: With dead ends: 31585 [2024-11-08 10:25:37,425 INFO L226 Difference]: Without dead ends: 21207 [2024-11-08 10:25:37,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:37,446 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 [2024-11-08 10:25:37,447 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] [2024-11-08 10:25:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21207 states. [2024-11-08 10:25:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21207 to 21207. [2024-11-08 10:25:37,711 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) [2024-11-08 10:25:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 30478 transitions. [2024-11-08 10:25:37,750 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 30478 transitions. Word has length 369 [2024-11-08 10:25:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:37,750 INFO L471 AbstractCegarLoop]: Abstraction has 21207 states and 30478 transitions. [2024-11-08 10:25:37,751 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) [2024-11-08 10:25:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 30478 transitions. [2024-11-08 10:25:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-08 10:25:37,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:37,781 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] [2024-11-08 10:25:37,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:37,982 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 [2024-11-08 10:25:37,983 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1654892000, now seen corresponding path program 1 times [2024-11-08 10:25:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688173497] [2024-11-08 10:25:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:37,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 10:25:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-08 10:25:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-08 10:25:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-08 10:25:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2024-11-08 10:25:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688173497] [2024-11-08 10:25:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688173497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558346238] [2024-11-08 10:25:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:38,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:38,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:38,601 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) [2024-11-08 10:25:38,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 10:25:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:39,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:39,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-08 10:25:39,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:25:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2024-11-08 10:25:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558346238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:25:39,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:25:39,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2024-11-08 10:25:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799108734] [2024-11-08 10:25:39,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:25:39,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 10:25:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 10:25:39,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-08 10:25:39,681 INFO L87 Difference]: Start difference. First operand 21207 states and 30478 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 10:25:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:44,086 INFO L93 Difference]: Finished difference Result 42417 states and 60966 transitions. [2024-11-08 10:25:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 10:25:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 369 [2024-11-08 10:25:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:44,117 INFO L225 Difference]: With dead ends: 42417 [2024-11-08 10:25:44,118 INFO L226 Difference]: Without dead ends: 21215 [2024-11-08 10:25:44,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-08 10:25:44,147 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 67 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:25:44,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1963 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-08 10:25:44,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21215 states. [2024-11-08 10:25:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21215 to 21215. [2024-11-08 10:25:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21215 states, 21181 states have (on average 1.4368537840517446) internal successors, (30434), 21185 states have internal predecessors, (30434), 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) [2024-11-08 10:25:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21215 states to 21215 states and 30486 transitions. [2024-11-08 10:25:44,433 INFO L78 Accepts]: Start accepts. Automaton has 21215 states and 30486 transitions. Word has length 369 [2024-11-08 10:25:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:44,434 INFO L471 AbstractCegarLoop]: Abstraction has 21215 states and 30486 transitions. [2024-11-08 10:25:44,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-08 10:25:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 21215 states and 30486 transitions. [2024-11-08 10:25:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-08 10:25:44,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:44,459 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-08 10:25:44,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 10:25:44,659 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 [2024-11-08 10:25:44,660 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:44,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1125328958, now seen corresponding path program 2 times [2024-11-08 10:25:44,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:44,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770835712] [2024-11-08 10:25:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 10:25:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-08 10:25:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-08 10:25:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-08 10:25:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 10:25:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 10:25:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2024-11-08 10:25:45,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770835712] [2024-11-08 10:25:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770835712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273266745] [2024-11-08 10:25:45,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 10:25:45,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:45,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:45,355 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) [2024-11-08 10:25:45,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 10:25:48,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 10:25:48,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:25:48,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:25:48,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-08 10:25:48,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:25:48,229 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2024-11-08 10:25:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273266745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:25:48,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:25:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2024-11-08 10:25:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99841656] [2024-11-08 10:25:48,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:25:48,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 10:25:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 10:25:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-08 10:25:48,232 INFO L87 Difference]: Start difference. First operand 21215 states and 30486 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-08 10:25:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:52,519 INFO L93 Difference]: Finished difference Result 42444 states and 60996 transitions. [2024-11-08 10:25:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 10:25:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 383 [2024-11-08 10:25:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:52,547 INFO L225 Difference]: With dead ends: 42444 [2024-11-08 10:25:52,547 INFO L226 Difference]: Without dead ends: 21240 [2024-11-08 10:25:52,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-08 10:25:52,575 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 78 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1927 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 10:25:52,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1927 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 10:25:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21240 states. [2024-11-08 10:25:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21240 to 21234. [2024-11-08 10:25:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21234 states, 21199 states have (on average 1.4365300250011792) internal successors, (30453), 21203 states have internal predecessors, (30453), 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) [2024-11-08 10:25:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21234 states to 21234 states and 30507 transitions. [2024-11-08 10:25:52,863 INFO L78 Accepts]: Start accepts. Automaton has 21234 states and 30507 transitions. Word has length 383 [2024-11-08 10:25:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:52,864 INFO L471 AbstractCegarLoop]: Abstraction has 21234 states and 30507 transitions. [2024-11-08 10:25:52,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-08 10:25:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 21234 states and 30507 transitions. [2024-11-08 10:25:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-08 10:25:52,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:52,891 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, 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] [2024-11-08 10:25:52,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 10:25:53,091 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 [2024-11-08 10:25:53,092 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:53,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1093513716, now seen corresponding path program 3 times [2024-11-08 10:25:53,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:53,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742580361] [2024-11-08 10:25:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:25:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 10:25:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 10:25:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:25:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-08 10:25:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-08 10:25:53,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:53,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742580361] [2024-11-08 10:25:53,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742580361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:53,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736157272] [2024-11-08 10:25:53,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 10:25:53,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:53,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:53,710 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) [2024-11-08 10:25:53,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 10:25:56,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 10:25:56,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 10:25:56,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 10:25:56,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:56,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-08 10:25:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2024-11-08 10:25:56,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:56,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736157272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:56,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-08 10:25:56,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117600444] [2024-11-08 10:25:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:56,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 10:25:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 10:25:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 10:25:56,237 INFO L87 Difference]: Start difference. First operand 21234 states and 30507 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) [2024-11-08 10:25:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:56,575 INFO L93 Difference]: Finished difference Result 58876 states and 84024 transitions. [2024-11-08 10:25:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 10:25:56,576 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 398 [2024-11-08 10:25:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:56,624 INFO L225 Difference]: With dead ends: 58876 [2024-11-08 10:25:56,624 INFO L226 Difference]: Without dead ends: 37874 [2024-11-08 10:25:56,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-08 10:25:56,650 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 138 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 10:25:56,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 942 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 10:25:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37874 states. [2024-11-08 10:25:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37874 to 22770. [2024-11-08 10:25:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22770 states, 22735 states have (on average 1.440818121838575) internal successors, (32757), 22739 states have internal predecessors, (32757), 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) [2024-11-08 10:25:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22770 states to 22770 states and 32811 transitions. [2024-11-08 10:25:57,308 INFO L78 Accepts]: Start accepts. Automaton has 22770 states and 32811 transitions. Word has length 398 [2024-11-08 10:25:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:25:57,309 INFO L471 AbstractCegarLoop]: Abstraction has 22770 states and 32811 transitions. [2024-11-08 10:25:57,309 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) [2024-11-08 10:25:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 22770 states and 32811 transitions. [2024-11-08 10:25:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-08 10:25:57,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:25:57,343 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, 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] [2024-11-08 10:25:57,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 10:25:57,543 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,SelfDestructingSolverStorable27 [2024-11-08 10:25:57,544 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:25:57,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:25:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1234062326, now seen corresponding path program 1 times [2024-11-08 10:25:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:25:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778094474] [2024-11-08 10:25:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:25:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:25:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 10:25:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 10:25:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:25:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:25:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-08 10:25:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-08 10:25:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:25:58,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778094474] [2024-11-08 10:25:58,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778094474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:25:58,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36922098] [2024-11-08 10:25:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:25:58,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:25:58,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:25:58,407 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) [2024-11-08 10:25:58,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 10:25:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:25:59,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:25:59,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:25:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2024-11-08 10:25:59,558 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:25:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36922098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:25:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:25:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-08 10:25:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948359382] [2024-11-08 10:25:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:25:59,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:25:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:25:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:25:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:25:59,564 INFO L87 Difference]: Start difference. First operand 22770 states and 32811 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) [2024-11-08 10:25:59,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:25:59,677 INFO L93 Difference]: Finished difference Result 45564 states and 65592 transitions. [2024-11-08 10:25:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:25:59,677 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 398 [2024-11-08 10:25:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:25:59,705 INFO L225 Difference]: With dead ends: 45564 [2024-11-08 10:25:59,705 INFO L226 Difference]: Without dead ends: 23026 [2024-11-08 10:25:59,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:25:59,730 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 [2024-11-08 10:25:59,730 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] [2024-11-08 10:25:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23026 states. [2024-11-08 10:26:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23026 to 22770. [2024-11-08 10:26:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22770 states, 22735 states have (on average 1.4295579502968991) internal successors, (32501), 22739 states have internal predecessors, (32501), 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) [2024-11-08 10:26:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22770 states to 22770 states and 32555 transitions. [2024-11-08 10:26:00,105 INFO L78 Accepts]: Start accepts. Automaton has 22770 states and 32555 transitions. Word has length 398 [2024-11-08 10:26:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:26:00,106 INFO L471 AbstractCegarLoop]: Abstraction has 22770 states and 32555 transitions. [2024-11-08 10:26:00,106 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) [2024-11-08 10:26:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 22770 states and 32555 transitions. [2024-11-08 10:26:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-08 10:26:00,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:26:00,133 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, 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] [2024-11-08 10:26:00,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-08 10:26:00,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 10:26:00,334 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:26:00,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:26:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash -571376008, now seen corresponding path program 1 times [2024-11-08 10:26:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:26:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170606759] [2024-11-08 10:26:00,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:26:00,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:26:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:26:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 10:26:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 10:26:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:26:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:26:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-08 10:26:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-08 10:26:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:26:00,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170606759] [2024-11-08 10:26:00,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170606759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:26:00,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415731228] [2024-11-08 10:26:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:26:00,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:26:00,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:26:00,916 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) [2024-11-08 10:26:00,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 10:26:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:02,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 10:26:02,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:26:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2024-11-08 10:26:02,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 10:26:02,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415731228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 10:26:02,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 10:26:02,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-08 10:26:02,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689473126] [2024-11-08 10:26:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 10:26:02,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 10:26:02,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:26:02,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 10:26:02,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:26:02,207 INFO L87 Difference]: Start difference. First operand 22770 states and 32555 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) [2024-11-08 10:26:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 10:26:02,343 INFO L93 Difference]: Finished difference Result 46076 states and 66104 transitions. [2024-11-08 10:26:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 10:26:02,344 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 398 [2024-11-08 10:26:02,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 10:26:02,378 INFO L225 Difference]: With dead ends: 46076 [2024-11-08 10:26:02,379 INFO L226 Difference]: Without dead ends: 23538 [2024-11-08 10:26:02,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 10:26:02,405 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 [2024-11-08 10:26:02,405 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] [2024-11-08 10:26:02,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23538 states. [2024-11-08 10:26:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23538 to 23538. [2024-11-08 10:26:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23538 states, 23503 states have (on average 1.3937369697485427) internal successors, (32757), 23507 states have internal predecessors, (32757), 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) [2024-11-08 10:26:02,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23538 states to 23538 states and 32811 transitions. [2024-11-08 10:26:02,705 INFO L78 Accepts]: Start accepts. Automaton has 23538 states and 32811 transitions. Word has length 398 [2024-11-08 10:26:02,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 10:26:02,706 INFO L471 AbstractCegarLoop]: Abstraction has 23538 states and 32811 transitions. [2024-11-08 10:26:02,707 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) [2024-11-08 10:26:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 23538 states and 32811 transitions. [2024-11-08 10:26:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-08 10:26:02,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 10:26:02,734 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, 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] [2024-11-08 10:26:02,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 10:26:02,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:26:02,935 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 10:26:02,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 10:26:02,935 INFO L85 PathProgramCache]: Analyzing trace with hash -148674182, now seen corresponding path program 1 times [2024-11-08 10:26:02,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 10:26:02,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75912312] [2024-11-08 10:26:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:26:02,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 10:26:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 10:26:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-08 10:26:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-08 10:26:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-08 10:26:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 10:26:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-08 10:26:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-08 10:26:03,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 10:26:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75912312] [2024-11-08 10:26:03,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75912312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 10:26:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345944703] [2024-11-08 10:26:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 10:26:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 10:26:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 10:26:03,412 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) [2024-11-08 10:26:03,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 10:26:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 10:26:04,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 10:26:04,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 10:26:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-11-08 10:26:04,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 10:26:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-11-08 10:26:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345944703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 10:26:04,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 10:26:04,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 20 [2024-11-08 10:26:04,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343164545] [2024-11-08 10:26:04,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 10:26:04,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 10:26:04,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 10:26:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 10:26:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2024-11-08 10:26:04,989 INFO L87 Difference]: Start difference. First operand 23538 states and 32811 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 18 states have internal predecessors, (200), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)