./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.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 153786ff23d1f4ad1fa22216334d8f153d923a58dff5067a8f60a9c72819150b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 16:15:03,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:15:03,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:15:03,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:15:03,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:15:03,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:15:03,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:15:03,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:15:03,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:15:03,722 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:15:03,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:15:03,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:15:03,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:15:03,722 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:15:03,722 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:15:03,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:15:03,723 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:15:03,724 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:15:03,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:15:03,724 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:15:03,725 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 153786ff23d1f4ad1fa22216334d8f153d923a58dff5067a8f60a9c72819150b [2025-03-08 16:15:03,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:15:03,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:15:03,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:15:03,974 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:15:03,974 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:15:03,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2025-03-08 16:15:05,138 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/538fc297b/ccaa5cd988474dd68e9675da98c369aa/FLAG9a7c56945 [2025-03-08 16:15:05,404 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:15:05,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2025-03-08 16:15:05,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/538fc297b/ccaa5cd988474dd68e9675da98c369aa/FLAG9a7c56945 [2025-03-08 16:15:05,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/538fc297b/ccaa5cd988474dd68e9675da98c369aa [2025-03-08 16:15:05,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:15:05,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:15:05,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:15:05,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:15:05,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:15:05,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:05,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a14da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05, skipping insertion in model container [2025-03-08 16:15:05,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:05,747 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:15:05,840 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2025-03-08 16:15:05,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:15:05,901 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:15:05,908 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2025-03-08 16:15:05,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:15:05,951 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:15:05,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05 WrapperNode [2025-03-08 16:15:05,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:15:05,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:15:05,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:15:05,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:15:05,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:05,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,000 INFO L138 Inliner]: procedures = 29, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 555 [2025-03-08 16:15:06,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:15:06,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:15:06,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:15:06,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:15:06,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,029 INFO L175 MemorySlicer]: Split 146 memory accesses to 5 slices as follows [2, 33, 56, 35, 20]. 38 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 4, 4, 4, 2]. The 19 writes are split as follows [0, 6, 6, 5, 2]. [2025-03-08 16:15:06,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:15:06,072 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:15:06,072 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:15:06,072 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:15:06,073 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (1/1) ... [2025-03-08 16:15:06,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:15:06,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:15:06,104 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) [2025-03-08 16:15:06,107 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 [2025-03-08 16:15:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:15:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 16:15:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 16:15:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 16:15:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-08 16:15:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-08 16:15:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-08 16:15:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:15:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:15:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:15:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 16:15:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 16:15:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 16:15:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 16:15:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:15:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:15:06,237 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:15:06,239 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:15:06,587 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L101: havoc property_#t~mem91#1;havoc property_#t~ite107#1;havoc property_#t~mem92#1;havoc property_#t~mem93#1;havoc property_#t~ite104#1;havoc property_#t~mem103#1;havoc property_#t~mem96#1;havoc property_#t~mem94#1;havoc property_#t~mem95#1;havoc property_#t~ite100#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~mem101#1;havoc property_#t~mem102#1;havoc property_#t~mem106#1;havoc property_#t~mem105#1;havoc property_#t~mem108#1;havoc property_#t~mem109#1;havoc property_#t~ite120#1;havoc property_#t~mem113#1;havoc property_#t~mem110#1;havoc property_#t~ite112#1;havoc property_#t~mem111#1;havoc property_#t~mem119#1;havoc property_#t~mem114#1;havoc property_#t~mem115#1;havoc property_#t~ite118#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~short121#1;havoc property_#t~mem131#1;havoc property_#t~mem122#1;havoc property_#t~ite124#1;havoc property_#t~mem123#1;havoc property_#t~mem125#1;havoc property_#t~ite130#1;havoc property_#t~mem126#1;havoc property_#t~ite128#1;havoc property_#t~mem127#1;havoc property_#t~mem129#1;havoc property_#t~ite139#1;havoc property_#t~mem133#1;havoc property_#t~mem132#1;havoc property_#t~mem134#1;havoc property_#t~mem135#1;havoc property_#t~ite138#1;havoc property_#t~mem137#1;havoc property_#t~mem136#1;havoc property_#t~short140#1;havoc property_#t~mem141#1;havoc property_#t~mem142#1;havoc property_#t~ite155#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~short145#1;havoc property_#t~ite152#1;havoc property_#t~mem149#1;havoc property_#t~mem146#1;havoc property_#t~mem147#1;havoc property_#t~short148#1;havoc property_#t~mem151#1;havoc property_#t~mem150#1;havoc property_#t~mem154#1;havoc property_#t~mem153#1;havoc property_#t~short156#1; [2025-03-08 16:15:06,622 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2025-03-08 16:15:06,622 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:15:06,632 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:15:06,634 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:15:06,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:15:06 BoogieIcfgContainer [2025-03-08 16:15:06,634 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:15:06,636 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:15:06,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:15:06,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:15:06,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:15:05" (1/3) ... [2025-03-08 16:15:06,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fc5ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:15:06, skipping insertion in model container [2025-03-08 16:15:06,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:15:05" (2/3) ... [2025-03-08 16:15:06,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fc5ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:15:06, skipping insertion in model container [2025-03-08 16:15:06,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:15:06" (3/3) ... [2025-03-08 16:15:06,643 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-25.i [2025-03-08 16:15:06,653 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:15:06,655 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-25.i that has 2 procedures, 123 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:15:06,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:15:06,701 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;@7817d983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:15:06,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:15:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 102 states have (on average 1.4215686274509804) internal successors, (145), 103 states have internal predecessors, (145), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-08 16:15:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 16:15:06,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:06,712 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:06,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:06,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1236225805, now seen corresponding path program 1 times [2025-03-08 16:15:06,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:06,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962454787] [2025-03-08 16:15:06,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:06,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 16:15:06,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 16:15:06,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:06,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-08 16:15:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:06,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962454787] [2025-03-08 16:15:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962454787] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:15:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517704075] [2025-03-08 16:15:06,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:06,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:15:06,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:15:06,990 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) [2025-03-08 16:15:06,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 16:15:07,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 16:15:07,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 16:15:07,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:07,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:07,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 16:15:07,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:15:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-08 16:15:07,202 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:15:07,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517704075] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:15:07,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:15:07,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 16:15:07,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941447983] [2025-03-08 16:15:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:15:07,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 16:15:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:07,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 16:15:07,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:15:07,230 INFO L87 Difference]: Start difference. First operand has 123 states, 102 states have (on average 1.4215686274509804) internal successors, (145), 103 states have internal predecessors, (145), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 16:15:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:07,256 INFO L93 Difference]: Finished difference Result 240 states and 375 transitions. [2025-03-08 16:15:07,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 16:15:07,257 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 144 [2025-03-08 16:15:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:07,265 INFO L225 Difference]: With dead ends: 240 [2025-03-08 16:15:07,265 INFO L226 Difference]: Without dead ends: 120 [2025-03-08 16:15:07,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 16:15:07,271 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:07,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:15:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-08 16:15:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-03-08 16:15:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 100 states have (on average 1.4) internal successors, (140), 100 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-08 16:15:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2025-03-08 16:15:07,313 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 144 [2025-03-08 16:15:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:07,313 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2025-03-08 16:15:07,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 16:15:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2025-03-08 16:15:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 16:15:07,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:07,315 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:07,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 16:15:07,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 16:15:07,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:07,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash 763660477, now seen corresponding path program 1 times [2025-03-08 16:15:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006519572] [2025-03-08 16:15:07,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:07,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:07,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 16:15:07,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 16:15:07,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:07,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-08 16:15:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:09,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006519572] [2025-03-08 16:15:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006519572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:15:09,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:15:09,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:15:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221978012] [2025-03-08 16:15:09,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:15:09,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:15:09,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:09,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:15:09,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:15:09,187 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 16:15:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:09,515 INFO L93 Difference]: Finished difference Result 355 states and 519 transitions. [2025-03-08 16:15:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:15:09,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 144 [2025-03-08 16:15:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:09,518 INFO L225 Difference]: With dead ends: 355 [2025-03-08 16:15:09,518 INFO L226 Difference]: Without dead ends: 238 [2025-03-08 16:15:09,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-03-08 16:15:09,519 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 227 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:09,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1303 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 16:15:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-03-08 16:15:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 203. [2025-03-08 16:15:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 174 states have (on average 1.4080459770114941) internal successors, (245), 175 states have internal predecessors, (245), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 16:15:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 297 transitions. [2025-03-08 16:15:09,541 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 297 transitions. Word has length 144 [2025-03-08 16:15:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:09,541 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 297 transitions. [2025-03-08 16:15:09,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 16:15:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 297 transitions. [2025-03-08 16:15:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-08 16:15:09,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:09,543 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:09,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 16:15:09,544 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:09,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1613598771, now seen corresponding path program 1 times [2025-03-08 16:15:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415080472] [2025-03-08 16:15:09,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:09,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 16:15:09,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 16:15:09,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:09,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-08 16:15:09,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:09,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415080472] [2025-03-08 16:15:09,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415080472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:15:09,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:15:09,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:15:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912109093] [2025-03-08 16:15:09,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:15:09,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:15:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:09,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:15:09,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:15:09,756 INFO L87 Difference]: Start difference. First operand 203 states and 297 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:09,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:09,949 INFO L93 Difference]: Finished difference Result 467 states and 680 transitions. [2025-03-08 16:15:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:15:09,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 145 [2025-03-08 16:15:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:09,953 INFO L225 Difference]: With dead ends: 467 [2025-03-08 16:15:09,953 INFO L226 Difference]: Without dead ends: 267 [2025-03-08 16:15:09,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:15:09,957 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 155 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:09,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 772 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:15:09,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2025-03-08 16:15:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2025-03-08 16:15:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 209 states have (on average 1.3636363636363635) internal successors, (285), 211 states have internal predecessors, (285), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 16:15:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 373 transitions. [2025-03-08 16:15:09,988 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 373 transitions. Word has length 145 [2025-03-08 16:15:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:09,989 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 373 transitions. [2025-03-08 16:15:09,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 373 transitions. [2025-03-08 16:15:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-08 16:15:09,990 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:09,991 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:09,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 16:15:09,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:09,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash 815897495, now seen corresponding path program 1 times [2025-03-08 16:15:09,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:09,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856303455] [2025-03-08 16:15:09,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:09,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:10,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-08 16:15:10,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-08 16:15:10,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:10,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-08 16:15:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:10,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856303455] [2025-03-08 16:15:10,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856303455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:15:10,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290593425] [2025-03-08 16:15:10,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:10,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:15:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:15:10,179 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) [2025-03-08 16:15:10,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 16:15:10,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-08 16:15:10,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-08 16:15:10,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:10,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:10,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 16:15:10,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:15:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-08 16:15:10,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 16:15:10,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290593425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:15:10,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 16:15:10,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2025-03-08 16:15:10,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371236061] [2025-03-08 16:15:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:15:10,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:15:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:10,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:15:10,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:15:10,398 INFO L87 Difference]: Start difference. First operand 258 states and 373 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:10,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:10,438 INFO L93 Difference]: Finished difference Result 488 states and 707 transitions. [2025-03-08 16:15:10,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:15:10,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2025-03-08 16:15:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:10,440 INFO L225 Difference]: With dead ends: 488 [2025-03-08 16:15:10,440 INFO L226 Difference]: Without dead ends: 264 [2025-03-08 16:15:10,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:15:10,442 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 0 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:10,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 682 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 16:15:10,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-03-08 16:15:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2025-03-08 16:15:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 213 states have (on average 1.3568075117370892) internal successors, (289), 215 states have internal predecessors, (289), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 16:15:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 377 transitions. [2025-03-08 16:15:10,466 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 377 transitions. Word has length 146 [2025-03-08 16:15:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:10,467 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 377 transitions. [2025-03-08 16:15:10,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 377 transitions. [2025-03-08 16:15:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-08 16:15:10,468 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:10,468 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:10,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 16:15:10,669 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,SelfDestructingSolverStorable3 [2025-03-08 16:15:10,669 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:10,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1414917031, now seen corresponding path program 1 times [2025-03-08 16:15:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469619387] [2025-03-08 16:15:10,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:10,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 16:15:10,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 16:15:10,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:10,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-08 16:15:10,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469619387] [2025-03-08 16:15:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469619387] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:15:10,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:15:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 16:15:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638321045] [2025-03-08 16:15:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:15:10,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 16:15:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:10,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 16:15:10,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 16:15:10,878 INFO L87 Difference]: Start difference. First operand 262 states and 377 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:11,067 INFO L93 Difference]: Finished difference Result 492 states and 709 transitions. [2025-03-08 16:15:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 16:15:11,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2025-03-08 16:15:11,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:11,070 INFO L225 Difference]: With dead ends: 492 [2025-03-08 16:15:11,070 INFO L226 Difference]: Without dead ends: 264 [2025-03-08 16:15:11,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:15:11,071 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 138 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:11,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 809 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:15:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-03-08 16:15:11,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2025-03-08 16:15:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 206 states have (on average 1.3495145631067962) internal successors, (278), 208 states have internal predecessors, (278), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 16:15:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 366 transitions. [2025-03-08 16:15:11,103 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 366 transitions. Word has length 148 [2025-03-08 16:15:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:11,104 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 366 transitions. [2025-03-08 16:15:11,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 366 transitions. [2025-03-08 16:15:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-08 16:15:11,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:11,105 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:11,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 16:15:11,105 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:11,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2014781223, now seen corresponding path program 1 times [2025-03-08 16:15:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:11,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430486435] [2025-03-08 16:15:11,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:11,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:11,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 16:15:11,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 16:15:11,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:11,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-08 16:15:11,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:11,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430486435] [2025-03-08 16:15:11,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430486435] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 16:15:11,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015851974] [2025-03-08 16:15:11,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:15:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:15:11,720 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) [2025-03-08 16:15:11,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 16:15:11,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-08 16:15:11,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-08 16:15:11,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:11,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:11,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 16:15:11,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 16:15:11,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 33 treesize of output 17 [2025-03-08 16:15:12,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 24 [2025-03-08 16:15:12,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 16:15:12,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2025-03-08 16:15:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 141 proven. 45 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2025-03-08 16:15:12,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 16:15:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-08 16:15:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015851974] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 16:15:12,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 16:15:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2025-03-08 16:15:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824372870] [2025-03-08 16:15:12,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 16:15:12,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 16:15:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:12,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 16:15:12,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-08 16:15:12,513 INFO L87 Difference]: Start difference. First operand 255 states and 366 transitions. Second operand has 13 states, 10 states have (on average 7.4) internal successors, (74), 13 states have internal predecessors, (74), 5 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 5 states have call successors, (35) [2025-03-08 16:15:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:13,123 INFO L93 Difference]: Finished difference Result 634 states and 892 transitions. [2025-03-08 16:15:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 16:15:13,124 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 7.4) internal successors, (74), 13 states have internal predecessors, (74), 5 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 5 states have call successors, (35) Word has length 148 [2025-03-08 16:15:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:13,130 INFO L225 Difference]: With dead ends: 634 [2025-03-08 16:15:13,130 INFO L226 Difference]: Without dead ends: 413 [2025-03-08 16:15:13,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 290 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2025-03-08 16:15:13,131 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 450 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:13,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 877 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 16:15:13,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-03-08 16:15:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 390. [2025-03-08 16:15:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 316 states have (on average 1.3354430379746836) internal successors, (422), 319 states have internal predecessors, (422), 62 states have call successors, (62), 11 states have call predecessors, (62), 11 states have return successors, (62), 59 states have call predecessors, (62), 62 states have call successors, (62) [2025-03-08 16:15:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 546 transitions. [2025-03-08 16:15:13,164 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 546 transitions. Word has length 148 [2025-03-08 16:15:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:13,165 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 546 transitions. [2025-03-08 16:15:13,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 7.4) internal successors, (74), 13 states have internal predecessors, (74), 5 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (35), 2 states have call predecessors, (35), 5 states have call successors, (35) [2025-03-08 16:15:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 546 transitions. [2025-03-08 16:15:13,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-08 16:15:13,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:13,167 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:13,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 16:15:13,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 16:15:13,368 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:13,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash -410127511, now seen corresponding path program 1 times [2025-03-08 16:15:13,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:13,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588169950] [2025-03-08 16:15:13,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:13,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:13,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-08 16:15:13,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-08 16:15:13,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:13,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:15:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-08 16:15:13,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:15:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588169950] [2025-03-08 16:15:13,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588169950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:15:13,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:15:13,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 16:15:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826809102] [2025-03-08 16:15:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:15:13,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 16:15:13,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:15:13,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 16:15:13,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 16:15:13,625 INFO L87 Difference]: Start difference. First operand 390 states and 546 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:15:13,760 INFO L93 Difference]: Finished difference Result 940 states and 1323 transitions. [2025-03-08 16:15:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 16:15:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 149 [2025-03-08 16:15:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:15:13,763 INFO L225 Difference]: With dead ends: 940 [2025-03-08 16:15:13,764 INFO L226 Difference]: Without dead ends: 592 [2025-03-08 16:15:13,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 16:15:13,765 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 145 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:15:13,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 998 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:15:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2025-03-08 16:15:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 588. [2025-03-08 16:15:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 481 states have (on average 1.340956340956341) internal successors, (645), 486 states have internal predecessors, (645), 90 states have call successors, (90), 16 states have call predecessors, (90), 16 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 16:15:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 825 transitions. [2025-03-08 16:15:13,807 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 825 transitions. Word has length 149 [2025-03-08 16:15:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:15:13,809 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 825 transitions. [2025-03-08 16:15:13,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-08 16:15:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 825 transitions. [2025-03-08 16:15:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-08 16:15:13,811 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:15:13,811 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:15:13,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 16:15:13,811 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:15:13,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:15:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2138643605, now seen corresponding path program 1 times [2025-03-08 16:15:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:15:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473517079] [2025-03-08 16:15:13,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:15:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:15:13,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-08 16:15:13,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-08 16:15:13,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:15:13,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat