./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.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_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1 --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 d19d7b2b7d747e3451ff133402a415fdd4ead636a3e1a2d0828b4dd66edd4355 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:14:37,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:14:37,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-01 13:14:37,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:14:37,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:14:37,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:14:37,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:14:37,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:14:37,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:14:37,995 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:14:37,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:14:37,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:14:37,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:14:37,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:14:37,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:14:37,997 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:37,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:14:37,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:37,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:14:37,998 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:14:37,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:14:37,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:14:37,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:14:37,999 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_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1 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 -> d19d7b2b7d747e3451ff133402a415fdd4ead636a3e1a2d0828b4dd66edd4355 [2024-12-01 13:14:38,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:14:38,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:14:38,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:14:38,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:14:38,238 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:14:38,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i [2024-12-01 13:14:41,179 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/917f3ac79/7969aca9f9104776ab530453729c3cbd/FLAG5e1f078b1 [2024-12-01 13:14:41,428 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:14:41,429 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i [2024-12-01 13:14:41,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/917f3ac79/7969aca9f9104776ab530453729c3cbd/FLAG5e1f078b1 [2024-12-01 13:14:41,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/917f3ac79/7969aca9f9104776ab530453729c3cbd [2024-12-01 13:14:41,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:14:41,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:14:41,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:14:41,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:14:41,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:14:41,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d1b89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41, skipping insertion in model container [2024-12-01 13:14:41,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:14:41,651 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_b66047f0-8115-487d-a699-0dd70bf298ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i[913,926] [2024-12-01 13:14:41,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:14:41,713 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:14:41,724 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_b66047f0-8115-487d-a699-0dd70bf298ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i[913,926] [2024-12-01 13:14:41,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:14:41,770 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:14:41,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41 WrapperNode [2024-12-01 13:14:41,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:14:41,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:14:41,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:14:41,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:14:41,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,817 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2024-12-01 13:14:41,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:14:41,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:14:41,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:14:41,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:14:41,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,848 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]. [2024-12-01 13:14:41,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,854 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:14:41,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:14:41,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:14:41,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:14:41,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (1/1) ... [2024-12-01 13:14:41,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:14:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:14:41,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:14:41,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:14:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:14:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 13:14:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 13:14:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:14:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:14:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:14:42,011 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:14:42,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:14:42,275 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-01 13:14:42,275 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:14:42,285 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:14:42,285 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 13:14:42,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:42 BoogieIcfgContainer [2024-12-01 13:14:42,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:14:42,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:14:42,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:14:42,293 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:14:42,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:14:41" (1/3) ... [2024-12-01 13:14:42,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f54075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:42, skipping insertion in model container [2024-12-01 13:14:42,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:41" (2/3) ... [2024-12-01 13:14:42,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f54075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:42, skipping insertion in model container [2024-12-01 13:14:42,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:42" (3/3) ... [2024-12-01 13:14:42,295 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-45.i [2024-12-01 13:14:42,310 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:14:42,312 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_normal_file-45.i that has 2 procedures, 57 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 13:14:42,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:14:42,374 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;@7181aec5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:14:42,374 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:14:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:14:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-01 13:14:42,388 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:42,388 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:42,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:42,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2077275396, now seen corresponding path program 1 times [2024-12-01 13:14:42,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137464849] [2024-12-01 13:14:42,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:42,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-01 13:14:42,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:14:42,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137464849] [2024-12-01 13:14:42,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137464849] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:14:42,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756499906] [2024-12-01 13:14:42,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:42,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:14:42,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:14:42,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:14:42,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:14:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:42,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 13:14:42,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:14:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-01 13:14:42,831 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:14:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756499906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:42,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:14:42,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-01 13:14:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081575092] [2024-12-01 13:14:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:42,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:14:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:14:42,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:14:42,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:14:42,856 INFO L87 Difference]: Start difference. First operand has 57 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-01 13:14:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:42,882 INFO L93 Difference]: Finished difference Result 107 states and 180 transitions. [2024-12-01 13:14:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:14:42,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2024-12-01 13:14:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:42,889 INFO L225 Difference]: With dead ends: 107 [2024-12-01 13:14:42,890 INFO L226 Difference]: Without dead ends: 53 [2024-12-01 13:14:42,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:14:42,896 INFO L435 NwaCegarLoop]: 78 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, 78 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 [2024-12-01 13:14:42,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:14:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-12-01 13:14:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-12-01 13:14:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:14:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 78 transitions. [2024-12-01 13:14:42,932 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 78 transitions. Word has length 107 [2024-12-01 13:14:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:42,933 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 78 transitions. [2024-12-01 13:14:42,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-01 13:14:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 78 transitions. [2024-12-01 13:14:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-01 13:14:42,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:42,937 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:42,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:14:43,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-01 13:14:43,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:43,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1761225468, now seen corresponding path program 1 times [2024-12-01 13:14:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111640306] [2024-12-01 13:14:43,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:14:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:14:43,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:14:43,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111640306] [2024-12-01 13:14:43,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111640306] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:14:43,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:14:43,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:14:43,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48536701] [2024-12-01 13:14:43,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:14:43,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:14:43,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:14:43,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:14:43,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:14:43,342 INFO L87 Difference]: Start difference. First operand 53 states and 78 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:14:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:14:43,399 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2024-12-01 13:14:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:14:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2024-12-01 13:14:43,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:14:43,403 INFO L225 Difference]: With dead ends: 150 [2024-12-01 13:14:43,403 INFO L226 Difference]: Without dead ends: 100 [2024-12-01 13:14:43,403 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 [2024-12-01 13:14:43,404 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 67 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:14:43,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:14:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-01 13:14:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-12-01 13:14:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-01 13:14:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 143 transitions. [2024-12-01 13:14:43,425 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 143 transitions. Word has length 107 [2024-12-01 13:14:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:14:43,426 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 143 transitions. [2024-12-01 13:14:43,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:14:43,426 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 143 transitions. [2024-12-01 13:14:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:14:43,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:14:43,428 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:14:43,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 13:14:43,428 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:14:43,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:14:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1716052354, now seen corresponding path program 1 times [2024-12-01 13:14:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:14:43,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600922631] [2024-12-01 13:14:43,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:14:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:14:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:17:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:17:38,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:17:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600922631] [2024-12-01 13:17:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600922631] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:17:38,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:17:38,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-01 13:17:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662446269] [2024-12-01 13:17:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:17:38,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 13:17:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:17:38,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 13:17:38,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:17:38,623 INFO L87 Difference]: Start difference. First operand 98 states and 143 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:17:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:17:42,253 INFO L93 Difference]: Finished difference Result 342 states and 470 transitions. [2024-12-01 13:17:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 13:17:42,253 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-01 13:17:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:17:42,257 INFO L225 Difference]: With dead ends: 342 [2024-12-01 13:17:42,257 INFO L226 Difference]: Without dead ends: 247 [2024-12-01 13:17:42,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2024-12-01 13:17:42,259 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 191 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:17:42,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 482 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-01 13:17:42,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-12-01 13:17:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 211. [2024-12-01 13:17:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 157 states have (on average 1.267515923566879) internal successors, (199), 162 states have internal predecessors, (199), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 41 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-01 13:17:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 291 transitions. [2024-12-01 13:17:42,306 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 291 transitions. Word has length 108 [2024-12-01 13:17:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:17:42,307 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 291 transitions. [2024-12-01 13:17:42,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:17:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 291 transitions. [2024-12-01 13:17:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:17:42,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:17:42,309 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:17:42,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 13:17:42,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:17:42,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:17:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash 58955008, now seen corresponding path program 1 times [2024-12-01 13:17:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:17:42,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209085501] [2024-12-01 13:17:42,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:17:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:17:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:19:39,550 WARN L286 SmtUtils]: Spent 15.68s on a formula simplification. DAG size of input: 284 DAG size of output: 224 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-01 13:21:33,722 WARN L286 SmtUtils]: Spent 10.85s on a formula simplification. DAG size of input: 286 DAG size of output: 226 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-01 13:21:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:21:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:21:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209085501] [2024-12-01 13:21:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209085501] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:21:33,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:21:33,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-01 13:21:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2572122] [2024-12-01 13:21:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:21:33,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 13:21:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:21:33,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 13:21:33,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:21:33,787 INFO L87 Difference]: Start difference. First operand 211 states and 291 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:21:43,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:21:43,637 INFO L93 Difference]: Finished difference Result 247 states and 326 transitions. [2024-12-01 13:21:43,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 13:21:43,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-01 13:21:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:21:43,639 INFO L225 Difference]: With dead ends: 247 [2024-12-01 13:21:43,640 INFO L226 Difference]: Without dead ends: 245 [2024-12-01 13:21:43,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2024-12-01 13:21:43,641 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 171 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-01 13:21:43,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 549 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-01 13:21:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-12-01 13:21:43,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 209. [2024-12-01 13:21:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 155 states have (on average 1.270967741935484) internal successors, (197), 160 states have internal predecessors, (197), 46 states have call successors, (46), 7 states have call predecessors, (46), 7 states have return successors, (46), 41 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-01 13:21:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 289 transitions. [2024-12-01 13:21:43,685 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 289 transitions. Word has length 108 [2024-12-01 13:21:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:21:43,686 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 289 transitions. [2024-12-01 13:21:43,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:21:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 289 transitions. [2024-12-01 13:21:43,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:21:43,688 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:21:43,688 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:21:43,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 13:21:43,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:21:43,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:21:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash 831097206, now seen corresponding path program 1 times [2024-12-01 13:21:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:21:43,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115290512] [2024-12-01 13:21:43,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:21:43,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:21:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:22:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:22:02,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:22:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115290512] [2024-12-01 13:22:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115290512] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:22:02,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:22:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:22:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947741442] [2024-12-01 13:22:02,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:22:02,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:22:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:22:02,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:22:02,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:22:02,919 INFO L87 Difference]: Start difference. First operand 209 states and 289 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:22:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:22:03,659 INFO L93 Difference]: Finished difference Result 526 states and 711 transitions. [2024-12-01 13:22:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:22:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-01 13:22:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:22:03,663 INFO L225 Difference]: With dead ends: 526 [2024-12-01 13:22:03,663 INFO L226 Difference]: Without dead ends: 328 [2024-12-01 13:22:03,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:22:03,664 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 92 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:22:03,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 232 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 13:22:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-12-01 13:22:03,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 239. [2024-12-01 13:22:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 175 states have (on average 1.2514285714285713) internal successors, (219), 180 states have internal predecessors, (219), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-01 13:22:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 327 transitions. [2024-12-01 13:22:03,740 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 327 transitions. Word has length 108 [2024-12-01 13:22:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:22:03,741 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 327 transitions. [2024-12-01 13:22:03,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:22:03,741 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 327 transitions. [2024-12-01 13:22:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:22:03,742 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:22:03,743 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:22:03,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 13:22:03,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:22:03,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:22:03,743 INFO L85 PathProgramCache]: Analyzing trace with hash 21750580, now seen corresponding path program 1 times [2024-12-01 13:22:03,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:22:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296215613] [2024-12-01 13:22:03,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:22:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:22:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:22:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:22:06,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:22:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296215613] [2024-12-01 13:22:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296215613] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:22:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:22:06,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:22:06,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663918863] [2024-12-01 13:22:06,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:22:06,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:22:06,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:22:06,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:22:06,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:22:06,225 INFO L87 Difference]: Start difference. First operand 239 states and 327 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:22:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:22:06,771 INFO L93 Difference]: Finished difference Result 556 states and 747 transitions. [2024-12-01 13:22:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:22:06,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-01 13:22:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:22:06,773 INFO L225 Difference]: With dead ends: 556 [2024-12-01 13:22:06,774 INFO L226 Difference]: Without dead ends: 328 [2024-12-01 13:22:06,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:22:06,775 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 77 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:22:06,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 283 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 13:22:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-12-01 13:22:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 229. [2024-12-01 13:22:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 165 states have (on average 1.2424242424242424) internal successors, (205), 170 states have internal predecessors, (205), 54 states have call successors, (54), 9 states have call predecessors, (54), 9 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-01 13:22:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 313 transitions. [2024-12-01 13:22:06,847 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 313 transitions. Word has length 108 [2024-12-01 13:22:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:22:06,847 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 313 transitions. [2024-12-01 13:22:06,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:22:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 313 transitions. [2024-12-01 13:22:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:22:06,849 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:22:06,849 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:22:06,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 13:22:06,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:22:06,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:22:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1299051264, now seen corresponding path program 1 times [2024-12-01 13:22:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:22:06,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247769505] [2024-12-01 13:22:06,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:22:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:22:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:25:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:25:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:25:09,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247769505] [2024-12-01 13:25:09,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247769505] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:25:09,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:25:09,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-01 13:25:09,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989323080] [2024-12-01 13:25:09,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:25:09,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 13:25:09,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:25:09,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 13:25:09,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:25:09,413 INFO L87 Difference]: Start difference. First operand 229 states and 313 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:25:12,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-01 13:25:13,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-01 13:25:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:25:19,721 INFO L93 Difference]: Finished difference Result 569 states and 756 transitions. [2024-12-01 13:25:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 13:25:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-01 13:25:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:25:19,723 INFO L225 Difference]: With dead ends: 569 [2024-12-01 13:25:19,724 INFO L226 Difference]: Without dead ends: 351 [2024-12-01 13:25:19,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2024-12-01 13:25:19,725 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 203 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:25:19,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 436 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-12-01 13:25:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-12-01 13:25:19,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 292. [2024-12-01 13:25:19,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 218 states have (on average 1.238532110091743) internal successors, (270), 225 states have internal predecessors, (270), 60 states have call successors, (60), 13 states have call predecessors, (60), 13 states have return successors, (60), 53 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-01 13:25:19,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 390 transitions. [2024-12-01 13:25:19,807 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 390 transitions. Word has length 108 [2024-12-01 13:25:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:25:19,807 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 390 transitions. [2024-12-01 13:25:19,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:25:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 390 transitions. [2024-12-01 13:25:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:25:19,809 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:25:19,809 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:25:19,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 13:25:19,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:25:19,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:25:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1220908670, now seen corresponding path program 1 times [2024-12-01 13:25:19,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:25:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782393180] [2024-12-01 13:25:19,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:25:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:25:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:27:05,381 WARN L286 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 273 DAG size of output: 207 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-01 13:28:20,145 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-01 13:28:20,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-01 13:28:20,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 13:28:20,146 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-12-01 13:28:20,150 INFO L158 Benchmark]: Toolchain (without parser) took 818688.91ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 117.9MB in the beginning and 613.0MB in the end (delta: -495.1MB). Peak memory consumption was 803.9MB. Max. memory is 16.1GB. [2024-12-01 13:28:20,151 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:28:20,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.66ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 104.1MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 13:28:20,151 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.09ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 101.7MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 13:28:20,152 INFO L158 Benchmark]: Boogie Preprocessor took 46.89ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 98.0MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 13:28:20,152 INFO L158 Benchmark]: RCFGBuilder took 419.81ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 80.3MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 13:28:20,152 INFO L158 Benchmark]: TraceAbstraction took 817861.74ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 79.6MB in the beginning and 613.0MB in the end (delta: -533.5MB). Peak memory consumption was 770.3MB. Max. memory is 16.1GB. [2024-12-01 13:28:20,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.66ms. Allocated memory is still 142.6MB. Free memory was 117.7MB in the beginning and 104.1MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.09ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 101.7MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.89ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 98.0MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 419.81ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 80.3MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 817861.74ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 79.6MB in the beginning and 613.0MB in the end (delta: -533.5MB). Peak memory consumption was 770.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1 --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 d19d7b2b7d747e3451ff133402a415fdd4ead636a3e1a2d0828b4dd66edd4355 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:28:21,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:28:21,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-01 13:28:21,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:28:21,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:28:21,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:28:21,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:28:21,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:28:21,953 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:28:21,954 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:28:21,954 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:28:21,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:28:21,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:28:21,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:28:21,954 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:28:21,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:28:21,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:28:21,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:28:21,956 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:28:21,956 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:28:21,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:28:21,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:28:21,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:28:21,957 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_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1 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 -> d19d7b2b7d747e3451ff133402a415fdd4ead636a3e1a2d0828b4dd66edd4355 [2024-12-01 13:28:22,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:28:22,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:28:22,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:28:22,203 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:28:22,203 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:28:22,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i [2024-12-01 13:28:24,874 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/744d325ac/47dcc24445f04856854f3b64d0b6541c/FLAG386770d3c [2024-12-01 13:28:25,077 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:28:25,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i [2024-12-01 13:28:25,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/744d325ac/47dcc24445f04856854f3b64d0b6541c/FLAG386770d3c [2024-12-01 13:28:25,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/data/744d325ac/47dcc24445f04856854f3b64d0b6541c [2024-12-01 13:28:25,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:28:25,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:28:25,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:28:25,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:28:25,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:28:25,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4297f084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25, skipping insertion in model container [2024-12-01 13:28:25,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,468 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:28:25,580 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_b66047f0-8115-487d-a699-0dd70bf298ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i[913,926] [2024-12-01 13:28:25,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:28:25,631 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:28:25,638 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_b66047f0-8115-487d-a699-0dd70bf298ff/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-45.i[913,926] [2024-12-01 13:28:25,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:28:25,670 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:28:25,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25 WrapperNode [2024-12-01 13:28:25,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:28:25,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:28:25,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:28:25,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:28:25,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,701 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 117 [2024-12-01 13:28:25,701 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:28:25,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:28:25,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:28:25,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:28:25,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,725 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]. [2024-12-01 13:28:25,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,725 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,737 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:28:25,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:28:25,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:28:25,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:28:25,745 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (1/1) ... [2024-12-01 13:28:25,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:28:25,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:25,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:28:25,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:28:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:28:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-01 13:28:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-01 13:28:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-01 13:28:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:28:25,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:28:25,853 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:28:25,854 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:28:26,119 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-01 13:28:26,119 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:28:26,126 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:28:26,127 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-01 13:28:26,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:28:26 BoogieIcfgContainer [2024-12-01 13:28:26,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:28:26,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:28:26,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:28:26,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:28:26,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:28:25" (1/3) ... [2024-12-01 13:28:26,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33db2aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:28:26, skipping insertion in model container [2024-12-01 13:28:26,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:28:25" (2/3) ... [2024-12-01 13:28:26,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33db2aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:28:26, skipping insertion in model container [2024-12-01 13:28:26,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:28:26" (3/3) ... [2024-12-01 13:28:26,135 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-45.i [2024-12-01 13:28:26,145 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:28:26,146 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_normal_file-45.i that has 2 procedures, 57 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-01 13:28:26,188 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:28:26,197 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;@91f9af4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:28:26,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-01 13:28:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:28:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-01 13:28:26,207 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:28:26,208 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:28:26,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:28:26,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:28:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2077275396, now seen corresponding path program 1 times [2024-12-01 13:28:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:28:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310609386] [2024-12-01 13:28:26,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:26,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:26,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:28:26,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:28:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:26,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-01 13:28:26,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:28:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-01 13:28:26,406 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:28:26,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:28:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310609386] [2024-12-01 13:28:26,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310609386] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:28:26,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:28:26,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:28:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907771120] [2024-12-01 13:28:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:28:26,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 13:28:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:28:26,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 13:28:26,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:28:26,433 INFO L87 Difference]: Start difference. First operand has 57 states, 38 states have (on average 1.394736842105263) internal successors, (53), 39 states have internal predecessors, (53), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-01 13:28:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:28:26,456 INFO L93 Difference]: Finished difference Result 107 states and 180 transitions. [2024-12-01 13:28:26,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 13:28:26,457 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2024-12-01 13:28:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:28:26,463 INFO L225 Difference]: With dead ends: 107 [2024-12-01 13:28:26,463 INFO L226 Difference]: Without dead ends: 53 [2024-12-01 13:28:26,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 13:28:26,469 INFO L435 NwaCegarLoop]: 78 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, 78 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 [2024-12-01 13:28:26,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:28:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-12-01 13:28:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-12-01 13:28:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:28:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 78 transitions. [2024-12-01 13:28:26,504 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 78 transitions. Word has length 107 [2024-12-01 13:28:26,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:28:26,504 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 78 transitions. [2024-12-01 13:28:26,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-01 13:28:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 78 transitions. [2024-12-01 13:28:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-01 13:28:26,507 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:28:26,507 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:28:26,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:28:26,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:26,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:28:26,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:28:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1761225468, now seen corresponding path program 1 times [2024-12-01 13:28:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:28:26,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003167597] [2024-12-01 13:28:26,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:26,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:26,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:28:26,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:28:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:26,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 13:28:26,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:28:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:28:26,878 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:28:26,878 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:28:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003167597] [2024-12-01 13:28:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003167597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:28:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:28:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:28:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422130401] [2024-12-01 13:28:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:28:26,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:28:26,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:28:26,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:28:26,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:28:26,881 INFO L87 Difference]: Start difference. First operand 53 states and 78 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:28:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:28:26,966 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2024-12-01 13:28:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:28:26,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 107 [2024-12-01 13:28:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:28:26,969 INFO L225 Difference]: With dead ends: 150 [2024-12-01 13:28:26,969 INFO L226 Difference]: Without dead ends: 100 [2024-12-01 13:28:26,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:28:26,971 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 67 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:28:26,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:28:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-01 13:28:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2024-12-01 13:28:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.253968253968254) internal successors, (79), 63 states have internal predecessors, (79), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-01 13:28:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 143 transitions. [2024-12-01 13:28:26,990 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 143 transitions. Word has length 107 [2024-12-01 13:28:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:28:26,990 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 143 transitions. [2024-12-01 13:28:26,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:28:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 143 transitions. [2024-12-01 13:28:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:28:26,992 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:28:26,992 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:28:27,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-01 13:28:27,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:27,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:28:27,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:28:27,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1716052354, now seen corresponding path program 1 times [2024-12-01 13:28:27,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:28:27,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743416164] [2024-12-01 13:28:27,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:27,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:27,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:27,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:28:27,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 13:28:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:27,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-01 13:28:27,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:28:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 167 proven. 36 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-12-01 13:28:27,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:28:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-01 13:28:28,013 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:28:28,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743416164] [2024-12-01 13:28:28,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743416164] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:28:28,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 13:28:28,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2024-12-01 13:28:28,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547053762] [2024-12-01 13:28:28,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 13:28:28,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-01 13:28:28,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:28:28,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-01 13:28:28,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-12-01 13:28:28,016 INFO L87 Difference]: Start difference. First operand 98 states and 143 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2024-12-01 13:28:28,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:28:28,650 INFO L93 Difference]: Finished difference Result 168 states and 234 transitions. [2024-12-01 13:28:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 13:28:28,651 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 108 [2024-12-01 13:28:28,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:28:28,652 INFO L225 Difference]: With dead ends: 168 [2024-12-01 13:28:28,652 INFO L226 Difference]: Without dead ends: 73 [2024-12-01 13:28:28,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2024-12-01 13:28:28,654 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 122 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:28:28,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 193 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 13:28:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-12-01 13:28:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2024-12-01 13:28:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:28:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2024-12-01 13:28:28,669 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 108 [2024-12-01 13:28:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:28:28,669 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2024-12-01 13:28:28,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 4 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2024-12-01 13:28:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2024-12-01 13:28:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-01 13:28:28,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:28:28,671 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:28:28,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 13:28:28,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:28,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:28:28,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:28:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash 831097206, now seen corresponding path program 1 times [2024-12-01 13:28:28,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:28:28,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3566776] [2024-12-01 13:28:28,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:28,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:28,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:28:28,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 13:28:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:28,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-01 13:28:28,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:28:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-01 13:28:29,003 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:28:29,003 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 13:28:29,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3566776] [2024-12-01 13:28:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3566776] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:28:29,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:28:29,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:28:29,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636002931] [2024-12-01 13:28:29,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:28:29,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:28:29,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 13:28:29,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:28:29,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:28:29,004 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:28:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:28:29,045 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2024-12-01 13:28:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:28:29,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 108 [2024-12-01 13:28:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:28:29,050 INFO L225 Difference]: With dead ends: 125 [2024-12-01 13:28:29,050 INFO L226 Difference]: Without dead ends: 64 [2024-12-01 13:28:29,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:28:29,052 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:28:29,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:28:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-12-01 13:28:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-12-01 13:28:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-01 13:28:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2024-12-01 13:28:29,066 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 108 [2024-12-01 13:28:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:28:29,066 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2024-12-01 13:28:29,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-01 13:28:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2024-12-01 13:28:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-01 13:28:29,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:28:29,068 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:28:29,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 13:28:29,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:29,269 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-01 13:28:29,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:28:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -242274181, now seen corresponding path program 1 times [2024-12-01 13:28:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 13:28:29,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461588778] [2024-12-01 13:28:29,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:28:29,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:28:29,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:28:29,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:28:29,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b66047f0-8115-487d-a699-0dd70bf298ff/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 13:28:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:28:29,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-01 13:28:29,391 INFO L279 TraceCheckSpWp]: Computing forward predicates...