./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB --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 0ccee0229556691a937cdcac01dc95204eb56d830547417b519006af3a6e2b5c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:23:25,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:23:25,628 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:23:25,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:23:25,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:23:25,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:23:25,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:23:25,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:23:25,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:23:25,677 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:23:25,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:23:25,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:23:25,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:23:25,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:23:25,679 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:23:25,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:23:25,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:23:25,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:23:25,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:23:25,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:23:25,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:25,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:25,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:25,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:25,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:25,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:23:25,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:23:25,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:23:25,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:23:25,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:23:25,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:23:25,683 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 0ccee0229556691a937cdcac01dc95204eb56d830547417b519006af3a6e2b5c [2024-11-27 23:23:26,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:23:26,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:23:26,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:23:26,025 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:23:26,026 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:23:26,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-10.i [2024-11-27 23:23:29,096 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/data/63a43835d/78118dc99d504f8cb4e15c5c6a582dbf/FLAGdccd755b7 [2024-11-27 23:23:29,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:23:29,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-10.i [2024-11-27 23:23:29,343 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/data/63a43835d/78118dc99d504f8cb4e15c5c6a582dbf/FLAGdccd755b7 [2024-11-27 23:23:29,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/data/63a43835d/78118dc99d504f8cb4e15c5c6a582dbf [2024-11-27 23:23:29,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:23:29,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:23:29,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:29,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:23:29,662 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:23:29,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b39448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29, skipping insertion in model container [2024-11-27 23:23:29,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:29,685 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:23:29,824 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-10.i[913,926] [2024-11-27 23:23:29,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:29,904 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:23:29,918 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_normal_file-10.i[913,926] [2024-11-27 23:23:29,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:23:29,979 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:23:29,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29 WrapperNode [2024-11-27 23:23:29,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:23:29,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:29,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:23:29,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:23:29,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,072 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2024-11-27 23:23:30,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:23:30,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:23:30,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:23:30,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:23:30,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,139 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:23:30,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,155 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:23:30,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:23:30,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:23:30,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:23:30,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (1/1) ... [2024-11-27 23:23:30,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:23:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:30,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:23:30,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:23:30,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:23:30,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:23:30,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:23:30,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:23:30,365 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:23:30,367 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:23:30,979 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-27 23:23:30,980 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:23:30,995 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:23:30,995 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:23:30,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:30 BoogieIcfgContainer [2024-11-27 23:23:30,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:23:30,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:23:30,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:23:31,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:23:31,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:23:29" (1/3) ... [2024-11-27 23:23:31,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b75967a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:31, skipping insertion in model container [2024-11-27 23:23:31,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:23:29" (2/3) ... [2024-11-27 23:23:31,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b75967a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:23:31, skipping insertion in model container [2024-11-27 23:23:31,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:23:30" (3/3) ... [2024-11-27 23:23:31,007 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-10.i [2024-11-27 23:23:31,025 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:23:31,027 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_normal_file-10.i that has 2 procedures, 80 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:23:31,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:23:31,147 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;@49883b20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:23:31,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:23:31,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:23:31,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 23:23:31,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:31,174 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:31,174 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:31,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1923946816, now seen corresponding path program 1 times [2024-11-27 23:23:31,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:31,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909833010] [2024-11-27 23:23:31,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-27 23:23:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:23:31,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909833010] [2024-11-27 23:23:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909833010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:23:31,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356568938] [2024-11-27 23:23:31,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:31,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:23:31,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:23:31,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:23:31,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:23:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:23:31,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:23:31,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:23:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-27 23:23:31,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:23:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356568938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:23:31,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:23:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:23:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819649777] [2024-11-27 23:23:31,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:23:31,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:23:31,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:23:31,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:23:31,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:23:31,894 INFO L87 Difference]: Start difference. First operand has 80 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 54 states have internal predecessors, (74), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 23:23:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:23:31,950 INFO L93 Difference]: Finished difference Result 153 states and 262 transitions. [2024-11-27 23:23:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:23:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 152 [2024-11-27 23:23:31,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:23:31,965 INFO L225 Difference]: With dead ends: 153 [2024-11-27 23:23:31,965 INFO L226 Difference]: Without dead ends: 76 [2024-11-27 23:23:31,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:23:31,976 INFO L435 NwaCegarLoop]: 115 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, 115 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 [2024-11-27 23:23:31,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:23:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-27 23:23:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-27 23:23:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:23:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 115 transitions. [2024-11-27 23:23:32,040 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 115 transitions. Word has length 152 [2024-11-27 23:23:32,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:23:32,040 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 115 transitions. [2024-11-27 23:23:32,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 23:23:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 115 transitions. [2024-11-27 23:23:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 23:23:32,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:23:32,046 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:23:32,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:23:32,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71372dd9-6774-49de-8317-b72bbe90cefb/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 23:23:32,247 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:23:32,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:23:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash 727529152, now seen corresponding path program 1 times [2024-11-27 23:23:32,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:23:32,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932733593] [2024-11-27 23:23:32,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:23:32,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:23:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-27 23:25:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932733593] [2024-11-27 23:25:51,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932733593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:25:51,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:25:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:25:51,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420418549] [2024-11-27 23:25:51,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:25:51,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:25:51,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:25:51,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:25:51,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:25:51,806 INFO L87 Difference]: Start difference. First operand 76 states and 115 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-27 23:25:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:25:52,961 INFO L93 Difference]: Finished difference Result 208 states and 312 transitions. [2024-11-27 23:25:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:25:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 152 [2024-11-27 23:25:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:25:52,970 INFO L225 Difference]: With dead ends: 208 [2024-11-27 23:25:52,972 INFO L226 Difference]: Without dead ends: 135 [2024-11-27 23:25:52,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:25:52,974 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 192 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:25:52,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 265 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:25:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-27 23:25:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 91. [2024-11-27 23:25:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:25:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 139 transitions. [2024-11-27 23:25:53,000 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 139 transitions. Word has length 152 [2024-11-27 23:25:53,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:25:53,001 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 139 transitions. [2024-11-27 23:25:53,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-27 23:25:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 139 transitions. [2024-11-27 23:25:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-27 23:25:53,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:25:53,008 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:25:53,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:25:53,008 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:25:53,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:25:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash 469363714, now seen corresponding path program 1 times [2024-11-27 23:25:53,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:25:53,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696342993] [2024-11-27 23:25:53,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:53,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-27 23:30:54,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696342993] [2024-11-27 23:30:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696342993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:30:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448808976] [2024-11-27 23:30:54,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:54,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:30:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:54,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:30:54,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:30:54,843 INFO L87 Difference]: Start difference. First operand 91 states and 139 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 23:31:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:01,820 INFO L93 Difference]: Finished difference Result 250 states and 373 transitions. [2024-11-27 23:31:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:31:01,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 152 [2024-11-27 23:31:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:01,824 INFO L225 Difference]: With dead ends: 250 [2024-11-27 23:31:01,824 INFO L226 Difference]: Without dead ends: 162 [2024-11-27 23:31:01,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:31:01,826 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 321 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:01,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 285 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 23:31:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-27 23:31:01,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 91. [2024-11-27 23:31:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:31:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 139 transitions. [2024-11-27 23:31:01,846 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 139 transitions. Word has length 152 [2024-11-27 23:31:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:01,848 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 139 transitions. [2024-11-27 23:31:01,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 23:31:01,848 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 139 transitions. [2024-11-27 23:31:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 23:31:01,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:01,852 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:01,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:31:01,852 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:01,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash 175472950, now seen corresponding path program 1 times [2024-11-27 23:31:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:01,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160965280] [2024-11-27 23:31:01,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:33:23,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-27 23:33:23,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:33:23,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160965280] [2024-11-27 23:33:23,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160965280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:33:23,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:33:23,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:33:23,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12200820] [2024-11-27 23:33:23,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:33:23,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:33:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:33:23,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:33:23,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:33:23,981 INFO L87 Difference]: Start difference. First operand 91 states and 139 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-27 23:33:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:33:26,167 INFO L93 Difference]: Finished difference Result 251 states and 375 transitions. [2024-11-27 23:33:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:33:26,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 153 [2024-11-27 23:33:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:33:26,171 INFO L225 Difference]: With dead ends: 251 [2024-11-27 23:33:26,172 INFO L226 Difference]: Without dead ends: 163 [2024-11-27 23:33:26,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:33:26,175 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 167 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:33:26,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 344 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 23:33:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-27 23:33:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 92. [2024-11-27 23:33:26,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 66 states have internal predecessors, (93), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:33:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 141 transitions. [2024-11-27 23:33:26,199 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 141 transitions. Word has length 153 [2024-11-27 23:33:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:33:26,200 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 141 transitions. [2024-11-27 23:33:26,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-27 23:33:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 141 transitions. [2024-11-27 23:33:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 23:33:26,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:33:26,204 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:33:26,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:33:26,205 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:33:26,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:33:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -411333064, now seen corresponding path program 1 times [2024-11-27 23:33:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:33:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305064269] [2024-11-27 23:33:26,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:33:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:33:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:36:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-27 23:36:59,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:36:59,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305064269] [2024-11-27 23:36:59,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305064269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:36:59,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:36:59,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 23:36:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054653116] [2024-11-27 23:36:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:36:59,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 23:36:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:36:59,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 23:36:59,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 23:36:59,222 INFO L87 Difference]: Start difference. First operand 92 states and 141 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 23:37:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:28,468 INFO L93 Difference]: Finished difference Result 290 states and 426 transitions. [2024-11-27 23:37:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:37:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 153 [2024-11-27 23:37:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:28,471 INFO L225 Difference]: With dead ends: 290 [2024-11-27 23:37:28,472 INFO L226 Difference]: Without dead ends: 201 [2024-11-27 23:37:28,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:37:28,473 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 399 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:28,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 371 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-27 23:37:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-27 23:37:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 99. [2024-11-27 23:37:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:37:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 153 transitions. [2024-11-27 23:37:28,493 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 153 transitions. Word has length 153 [2024-11-27 23:37:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:28,494 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 153 transitions. [2024-11-27 23:37:28,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 23:37:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 153 transitions. [2024-11-27 23:37:28,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 23:37:28,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:28,497 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:28,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:37:28,497 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:28,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash -843657416, now seen corresponding path program 1 times [2024-11-27 23:37:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223755034] [2024-11-27 23:37:28,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-27 23:37:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223755034] [2024-11-27 23:37:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223755034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:37:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:37:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346578932] [2024-11-27 23:37:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:28,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:37:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:28,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:37:28,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:37:28,580 INFO L87 Difference]: Start difference. First operand 99 states and 153 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-27 23:37:28,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:28,649 INFO L93 Difference]: Finished difference Result 247 states and 378 transitions. [2024-11-27 23:37:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:37:28,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 153 [2024-11-27 23:37:28,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:28,652 INFO L225 Difference]: With dead ends: 247 [2024-11-27 23:37:28,652 INFO L226 Difference]: Without dead ends: 151 [2024-11-27 23:37:28,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:37:28,654 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 65 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:28,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 281 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:37:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-27 23:37:28,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2024-11-27 23:37:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.4036697247706422) internal successors, (153), 110 states have internal predecessors, (153), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-27 23:37:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 225 transitions. [2024-11-27 23:37:28,702 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 225 transitions. Word has length 153 [2024-11-27 23:37:28,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:28,703 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 225 transitions. [2024-11-27 23:37:28,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-27 23:37:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 225 transitions. [2024-11-27 23:37:28,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 23:37:28,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:28,706 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:28,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:37:28,706 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:28,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:28,708 INFO L85 PathProgramCache]: Analyzing trace with hash 931349946, now seen corresponding path program 1 times [2024-11-27 23:37:28,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:28,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826075087] [2024-11-27 23:37:28,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:28,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat