./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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-ap_file-80.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 3d1966bb592506b79b27027d67cb6c0fd6d8e652b34595ef57f8584495d162fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 01:21:42,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 01:21:42,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 01:21:42,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 01:21:42,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 01:21:42,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 01:21:42,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 01:21:42,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 01:21:42,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 01:21:42,682 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 01:21:42,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 01:21:42,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 01:21:42,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 01:21:42,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 01:21:42,683 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 01:21:42,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 01:21:42,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 01:21:42,683 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 01:21:42,684 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:21:42,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 01:21:42,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 01:21:42,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 01:21:42,685 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 -> 3d1966bb592506b79b27027d67cb6c0fd6d8e652b34595ef57f8584495d162fe [2025-03-04 01:21:42,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 01:21:42,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 01:21:42,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 01:21:42,913 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 01:21:42,913 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 01:21:42,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-80.i [2025-03-04 01:21:44,016 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c83a1660/0099101012384e898d5031810aa54e24/FLAG52c4166cb [2025-03-04 01:21:44,287 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 01:21:44,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-ap_file-80.i [2025-03-04 01:21:44,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c83a1660/0099101012384e898d5031810aa54e24/FLAG52c4166cb [2025-03-04 01:21:44,583 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c83a1660/0099101012384e898d5031810aa54e24 [2025-03-04 01:21:44,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 01:21:44,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 01:21:44,587 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 01:21:44,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 01:21:44,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 01:21:44,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac4823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44, skipping insertion in model container [2025-03-04 01:21:44,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 01:21:44,700 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-ap_file-80.i[917,930] [2025-03-04 01:21:44,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:21:44,786 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 01:21:44,795 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-ap_file-80.i[917,930] [2025-03-04 01:21:44,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:21:44,870 INFO L204 MainTranslator]: Completed translation [2025-03-04 01:21:44,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44 WrapperNode [2025-03-04 01:21:44,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 01:21:44,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 01:21:44,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 01:21:44,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 01:21:44,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,936 INFO L138 Inliner]: procedures = 29, calls = 233, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 786 [2025-03-04 01:21:44,941 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 01:21:44,941 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 01:21:44,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 01:21:44,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 01:21:44,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,974 INFO L175 MemorySlicer]: Split 199 memory accesses to 7 slices as follows [2, 6, 98, 36, 11, 23, 23]. 49 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 8, 3, 1, 3, 1]. The 19 writes are split as follows [0, 1, 9, 4, 1, 3, 1]. [2025-03-04 01:21:44,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,993 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:44,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:45,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:45,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 01:21:45,012 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 01:21:45,013 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 01:21:45,013 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 01:21:45,014 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (1/1) ... [2025-03-04 01:21:45,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:21:45,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:21:45,039 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) [2025-03-04 01:21:45,041 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 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 01:21:45,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-04 01:21:45,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-04 01:21:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-04 01:21:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-04 01:21:45,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 01:21:45,062 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 01:21:45,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 01:21:45,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 01:21:45,196 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 01:21:45,198 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 01:21:45,606 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L112: havoc property_#t~mem140#1;havoc property_#t~mem141#1;havoc property_#t~mem142#1;havoc property_#t~ite146#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~mem145#1;havoc property_#t~mem147#1;havoc property_#t~mem148#1;havoc property_#t~mem149#1;havoc property_#t~mem150#1;havoc property_#t~ite155#1;havoc property_#t~mem151#1;havoc property_#t~mem152#1;havoc property_#t~mem153#1;havoc property_#t~mem154#1;havoc property_#t~ite164#1;havoc property_#t~mem163#1;havoc property_#t~mem156#1;havoc property_#t~mem157#1;havoc property_#t~mem158#1;havoc property_#t~ite162#1;havoc property_#t~mem159#1;havoc property_#t~mem160#1;havoc property_#t~mem161#1;havoc property_#t~mem167#1;havoc property_#t~mem165#1;havoc property_#t~mem166#1;havoc property_#t~short168#1;havoc property_#t~ite176#1;havoc property_#t~mem173#1;havoc property_#t~mem169#1;havoc property_#t~ite172#1;havoc property_#t~mem170#1;havoc property_#t~mem171#1;havoc property_#t~mem175#1;havoc property_#t~mem174#1;havoc property_#t~short177#1;havoc property_#t~mem180#1;havoc property_#t~mem178#1;havoc property_#t~mem179#1;havoc property_#t~ite218#1;havoc property_#t~mem214#1;havoc property_#t~mem181#1;havoc property_#t~mem182#1;havoc property_#t~ite185#1;havoc property_#t~mem183#1;havoc property_#t~mem184#1;havoc property_#t~mem186#1;havoc property_#t~ite193#1;havoc property_#t~mem187#1;havoc property_#t~mem188#1;havoc property_#t~ite191#1;havoc property_#t~mem189#1;havoc property_#t~mem190#1;havoc property_#t~mem192#1;havoc property_#t~mem194#1;havoc property_#t~ite196#1;havoc property_#t~mem195#1;havoc property_#t~ite213#1;havoc property_#t~mem197#1;havoc property_#t~mem198#1;havoc property_#t~ite201#1;havoc property_#t~mem199#1;havoc property_#t~mem200#1;havoc property_#t~mem202#1;havoc property_#t~ite209#1;havoc property_#t~mem203#1;havoc property_#t~mem204#1;havoc property_#t~ite207#1;havoc property_#t~mem205#1;havoc property_#t~mem206#1;havoc property_#t~mem208#1;havoc property_#t~mem210#1;havoc property_#t~ite212#1;havoc property_#t~mem211#1;havoc property_#t~mem217#1;havoc property_#t~mem215#1;havoc property_#t~mem216#1;havoc property_#t~short219#1;havoc property_#t~mem221#1;havoc property_#t~mem220#1;havoc property_#t~short222#1;havoc property_#t~mem224#1;havoc property_#t~mem223#1;havoc property_#t~short225#1;havoc property_#t~mem227#1;havoc property_#t~mem226#1;havoc property_#t~short228#1; [2025-03-04 01:21:45,662 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2025-03-04 01:21:45,662 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 01:21:45,672 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 01:21:45,674 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 01:21:45,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:21:45 BoogieIcfgContainer [2025-03-04 01:21:45,675 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 01:21:45,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 01:21:45,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 01:21:45,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 01:21:45,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 01:21:44" (1/3) ... [2025-03-04 01:21:45,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bae03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:21:45, skipping insertion in model container [2025-03-04 01:21:45,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:21:44" (2/3) ... [2025-03-04 01:21:45,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bae03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:21:45, skipping insertion in model container [2025-03-04 01:21:45,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:21:45" (3/3) ... [2025-03-04 01:21:45,681 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-ap_file-80.i [2025-03-04 01:21:45,691 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 01:21:45,692 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-ap_file-80.i that has 2 procedures, 153 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-04 01:21:45,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 01:21:45,745 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;@280b313d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 01:21:45,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 01:21:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:21:45,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:45,761 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:45,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:45,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1007250188, now seen corresponding path program 1 times [2025-03-04 01:21:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:45,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518579712] [2025-03-04 01:21:45,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:45,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:45,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:45,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:45,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-04 01:21:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518579712] [2025-03-04 01:21:46,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518579712] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:21:46,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723369482] [2025-03-04 01:21:46,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:46,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:46,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:21:46,131 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) [2025-03-04 01:21:46,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 01:21:46,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:46,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:46,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:46,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:46,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 01:21:46,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:21:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-04 01:21:46,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:21:46,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723369482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:46,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:21:46,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 01:21:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402985510] [2025-03-04 01:21:46,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:46,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 01:21:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:46,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 01:21:46,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:21:46,434 INFO L87 Difference]: Start difference. First operand has 153 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-04 01:21:46,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:46,457 INFO L93 Difference]: Finished difference Result 300 states and 466 transitions. [2025-03-04 01:21:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 01:21:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2025-03-04 01:21:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:46,464 INFO L225 Difference]: With dead ends: 300 [2025-03-04 01:21:46,464 INFO L226 Difference]: Without dead ends: 150 [2025-03-04 01:21:46,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:21:46,469 INFO L435 NwaCegarLoop]: 222 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, 222 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 [2025-03-04 01:21:46,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:21:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-04 01:21:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-03-04 01:21:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2025-03-04 01:21:46,498 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2025-03-04 01:21:46,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:46,499 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2025-03-04 01:21:46,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-04 01:21:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2025-03-04 01:21:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:21:46,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:46,501 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:46,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 01:21:46,702 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 [2025-03-04 01:21:46,702 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:46,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1855186665, now seen corresponding path program 1 times [2025-03-04 01:21:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437369272] [2025-03-04 01:21:46,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:46,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:46,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:46,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:46,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:21:47,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437369272] [2025-03-04 01:21:47,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437369272] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:21:47,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206297872] [2025-03-04 01:21:47,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:47,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:47,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:21:47,161 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) [2025-03-04 01:21:47,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 01:21:47,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:47,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:47,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:47,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:47,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:21:47,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:21:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:21:47,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:21:47,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206297872] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:47,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:21:47,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-04 01:21:47,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273412233] [2025-03-04 01:21:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:47,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:21:47,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:47,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:21:47,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:21:47,456 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:47,508 INFO L93 Difference]: Finished difference Result 300 states and 445 transitions. [2025-03-04 01:21:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:21:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:21:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:47,511 INFO L225 Difference]: With dead ends: 300 [2025-03-04 01:21:47,512 INFO L226 Difference]: Without dead ends: 153 [2025-03-04 01:21:47,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:21:47,514 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:21:47,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 646 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:21:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-04 01:21:47,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2025-03-04 01:21:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2025-03-04 01:21:47,526 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2025-03-04 01:21:47,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:47,531 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2025-03-04 01:21:47,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2025-03-04 01:21:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:21:47,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:47,534 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:47,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 01:21:47,736 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,SelfDestructingSolverStorable1 [2025-03-04 01:21:47,737 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:47,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 47732202, now seen corresponding path program 1 times [2025-03-04 01:21:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204856072] [2025-03-04 01:21:47,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:47,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:47,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:47,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:47,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:21:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204856072] [2025-03-04 01:21:47,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204856072] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:21:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124533458] [2025-03-04 01:21:47,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:47,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:47,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:21:47,989 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) [2025-03-04 01:21:47,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 01:21:48,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:48,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:48,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:48,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:48,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:21:48,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:21:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:21:48,243 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:21:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124533458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:21:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-04 01:21:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848311194] [2025-03-04 01:21:48,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:48,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:21:48,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:48,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:21:48,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:21:48,245 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:48,275 INFO L93 Difference]: Finished difference Result 304 states and 449 transitions. [2025-03-04 01:21:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:21:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:21:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:48,277 INFO L225 Difference]: With dead ends: 304 [2025-03-04 01:21:48,278 INFO L226 Difference]: Without dead ends: 155 [2025-03-04 01:21:48,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:21:48,280 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:21:48,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:21:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-04 01:21:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2025-03-04 01:21:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2025-03-04 01:21:48,293 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2025-03-04 01:21:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:48,295 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2025-03-04 01:21:48,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:48,295 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2025-03-04 01:21:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:21:48,296 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:48,297 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:48,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 01:21:48,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:48,498 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:48,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:48,498 INFO L85 PathProgramCache]: Analyzing trace with hash 935235883, now seen corresponding path program 1 times [2025-03-04 01:21:48,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:48,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510917419] [2025-03-04 01:21:48,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:48,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:48,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:48,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:48,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:48,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:21:48,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510917419] [2025-03-04 01:21:48,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510917419] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:21:48,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676501529] [2025-03-04 01:21:48,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:21:48,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:21:48,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 01:21:48,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:48,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:48,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:48,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:48,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:21:48,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:21:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:21:48,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:21:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676501529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:48,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:21:48,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-04 01:21:48,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831857595] [2025-03-04 01:21:48,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:48,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:21:48,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:48,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:21:48,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:21:48,951 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:48,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:48,973 INFO L93 Difference]: Finished difference Result 308 states and 453 transitions. [2025-03-04 01:21:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:21:48,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:21:48,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:48,976 INFO L225 Difference]: With dead ends: 308 [2025-03-04 01:21:48,977 INFO L226 Difference]: Without dead ends: 157 [2025-03-04 01:21:48,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:21:48,978 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:21:48,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:21:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-04 01:21:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2025-03-04 01:21:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2025-03-04 01:21:48,990 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2025-03-04 01:21:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:48,991 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2025-03-04 01:21:48,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2025-03-04 01:21:48,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:21:48,993 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:48,993 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:49,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 01:21:49,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:49,197 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:49,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash 936159404, now seen corresponding path program 1 times [2025-03-04 01:21:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304650828] [2025-03-04 01:21:49,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:49,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:49,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:49,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:49,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:49,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:21:49,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:49,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304650828] [2025-03-04 01:21:49,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304650828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:21:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423144106] [2025-03-04 01:21:49,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:49,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:21:49,390 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:21:49,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 01:21:49,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:21:49,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:21:49,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:49,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:49,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:21:49,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:21:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:21:49,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:21:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423144106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:49,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:21:49,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-04 01:21:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317999491] [2025-03-04 01:21:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:49,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:21:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:49,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:21:49,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:21:49,628 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:49,650 INFO L93 Difference]: Finished difference Result 311 states and 456 transitions. [2025-03-04 01:21:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:21:49,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:21:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:49,652 INFO L225 Difference]: With dead ends: 311 [2025-03-04 01:21:49,653 INFO L226 Difference]: Without dead ends: 158 [2025-03-04 01:21:49,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:21:49,654 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:21:49,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:21:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-04 01:21:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2025-03-04 01:21:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2025-03-04 01:21:49,660 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2025-03-04 01:21:49,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:49,660 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2025-03-04 01:21:49,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:49,660 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2025-03-04 01:21:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-04 01:21:49,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:49,661 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:49,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 01:21:49,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:21:49,867 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:49,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1714356246, now seen corresponding path program 1 times [2025-03-04 01:21:49,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860999914] [2025-03-04 01:21:49,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:49,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:49,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-04 01:21:49,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-04 01:21:49,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:49,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:21:50,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:50,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860999914] [2025-03-04 01:21:50,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860999914] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:50,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 01:21:50,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 01:21:50,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716914739] [2025-03-04 01:21:50,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:50,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:21:50,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:50,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:21:50,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 01:21:50,322 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:50,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:50,353 INFO L93 Difference]: Finished difference Result 317 states and 464 transitions. [2025-03-04 01:21:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:21:50,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2025-03-04 01:21:50,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:50,355 INFO L225 Difference]: With dead ends: 317 [2025-03-04 01:21:50,355 INFO L226 Difference]: Without dead ends: 162 [2025-03-04 01:21:50,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 01:21:50,356 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 2 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:21:50,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 650 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:21:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-04 01:21:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2025-03-04 01:21:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.408450704225352) internal successors, (200), 142 states have internal predecessors, (200), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:21:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2025-03-04 01:21:50,367 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 155 [2025-03-04 01:21:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:50,368 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2025-03-04 01:21:50,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2025-03-04 01:21:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-04 01:21:50,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:50,370 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:50,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 01:21:50,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:50,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -469591765, now seen corresponding path program 1 times [2025-03-04 01:21:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10574732] [2025-03-04 01:21:50,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:50,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-04 01:21:50,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-04 01:21:50,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:50,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:21:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:21:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:21:51,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10574732] [2025-03-04 01:21:51,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10574732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:21:51,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 01:21:51,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 01:21:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645800313] [2025-03-04 01:21:51,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:21:51,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 01:21:51,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:21:51,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 01:21:51,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 01:21:51,734 INFO L87 Difference]: Start difference. First operand 161 states and 234 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:21:51,965 INFO L93 Difference]: Finished difference Result 429 states and 624 transitions. [2025-03-04 01:21:51,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 01:21:51,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2025-03-04 01:21:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:21:51,967 INFO L225 Difference]: With dead ends: 429 [2025-03-04 01:21:51,967 INFO L226 Difference]: Without dead ends: 271 [2025-03-04 01:21:51,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:21:51,968 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 148 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 01:21:51,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 937 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 01:21:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2025-03-04 01:21:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2025-03-04 01:21:51,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 240 states have (on average 1.4166666666666667) internal successors, (340), 241 states have internal predecessors, (340), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 01:21:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 390 transitions. [2025-03-04 01:21:51,980 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 390 transitions. Word has length 155 [2025-03-04 01:21:51,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:21:51,980 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 390 transitions. [2025-03-04 01:21:51,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:21:51,980 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 390 transitions. [2025-03-04 01:21:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-04 01:21:51,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:21:51,983 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:21:51,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 01:21:51,983 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:21:51,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:21:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1466664118, now seen corresponding path program 1 times [2025-03-04 01:21:51,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:21:51,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007096172] [2025-03-04 01:21:51,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:21:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:21:52,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-04 01:21:52,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-04 01:21:52,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:21:52,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat