./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.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_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/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_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/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_954be93f-80bb-4e65-8f9b-e6987dface6c/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 8d6e232da9a83d5f71424a24404b69fd0e4337eea9ca06f51ad2ecca1f048cf0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:10:34,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:10:34,442 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:10:34,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:10:34,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:10:34,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:10:34,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:10:34,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:10:34,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:10:34,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:10:34,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:10:34,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:10:34,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:10:34,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:10:34,472 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:10:34,473 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:10:34,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:10:34,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:10:34,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:10:34,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:10:34,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:10:34,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:10:34,475 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_954be93f-80bb-4e65-8f9b-e6987dface6c/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 -> 8d6e232da9a83d5f71424a24404b69fd0e4337eea9ca06f51ad2ecca1f048cf0 [2024-12-02 10:10:34,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:10:34,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:10:34,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:10:34,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:10:34,716 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:10:34,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i [2024-12-02 10:10:37,373 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/29ceca977/a15b71bee34d4f7295c708be76facd73/FLAGa44898403 [2024-12-02 10:10:37,553 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:10:37,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i [2024-12-02 10:10:37,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/29ceca977/a15b71bee34d4f7295c708be76facd73/FLAGa44898403 [2024-12-02 10:10:37,575 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/29ceca977/a15b71bee34d4f7295c708be76facd73 [2024-12-02 10:10:37,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:10:37,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:10:37,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:10:37,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:10:37,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:10:37,585 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3243fc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37, skipping insertion in model container [2024-12-02 10:10:37,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:10:37,727 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_954be93f-80bb-4e65-8f9b-e6987dface6c/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i[916,929] [2024-12-02 10:10:37,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:10:37,772 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:10:37,782 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_954be93f-80bb-4e65-8f9b-e6987dface6c/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i[916,929] [2024-12-02 10:10:37,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:10:37,814 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:10:37,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37 WrapperNode [2024-12-02 10:10:37,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:10:37,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:10:37,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:10:37,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:10:37,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,851 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2024-12-02 10:10:37,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:10:37,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:10:37,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:10:37,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:10:37,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,874 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]. [2024-12-02 10:10:37,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,879 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:10:37,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:10:37,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:10:37,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:10:37,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (1/1) ... [2024-12-02 10:10:37,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:10:37,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:10:37,916 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:10:37,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:10:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:10:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:10:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:10:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:10:37,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:10:37,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:10:38,004 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:10:38,006 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:10:38,208 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-12-02 10:10:38,208 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:10:38,218 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:10:38,218 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:10:38,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:10:38 BoogieIcfgContainer [2024-12-02 10:10:38,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:10:38,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:10:38,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:10:38,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:10:38,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:10:37" (1/3) ... [2024-12-02 10:10:38,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538d0faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:10:38, skipping insertion in model container [2024-12-02 10:10:38,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:37" (2/3) ... [2024-12-02 10:10:38,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538d0faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:10:38, skipping insertion in model container [2024-12-02 10:10:38,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:10:38" (3/3) ... [2024-12-02 10:10:38,227 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-36.i [2024-12-02 10:10:38,240 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:10:38,241 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-36.i that has 2 procedures, 58 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:10:38,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:10:38,294 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;@2f0aa328, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:10:38,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:10:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 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) [2024-12-02 10:10:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:10:38,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:38,305 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] [2024-12-02 10:10:38,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:38,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1637717661, now seen corresponding path program 1 times [2024-12-02 10:10:38,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:38,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611330550] [2024-12-02 10:10:38,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:38,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 10:10:38,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:38,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611330550] [2024-12-02 10:10:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611330550] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:10:38,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924147746] [2024-12-02 10:10:38,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:38,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:10:38,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:10:38,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:10:38,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:10:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:38,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:10:38,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:10:38,664 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 10:10:38,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:10:38,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924147746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:38,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:10:38,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 10:10:38,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830289084] [2024-12-02 10:10:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:38,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:10:38,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:38,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:10:38,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:10:38,691 INFO L87 Difference]: Start difference. First operand has 58 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-12-02 10:10:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:38,713 INFO L93 Difference]: Finished difference Result 109 states and 182 transitions. [2024-12-02 10:10:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:10:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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 105 [2024-12-02 10:10:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:38,719 INFO L225 Difference]: With dead ends: 109 [2024-12-02 10:10:38,719 INFO L226 Difference]: Without dead ends: 54 [2024-12-02 10:10:38,722 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 [2024-12-02 10:10:38,724 INFO L435 NwaCegarLoop]: 79 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, 79 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 [2024-12-02 10:10:38,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:10:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-12-02 10:10:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-12-02 10:10:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 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) [2024-12-02 10:10:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 79 transitions. [2024-12-02 10:10:38,753 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 79 transitions. Word has length 105 [2024-12-02 10:10:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:38,753 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 79 transitions. [2024-12-02 10:10:38,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-12-02 10:10:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 79 transitions. [2024-12-02 10:10:38,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:10:38,755 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:38,756 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] [2024-12-02 10:10:38,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:10:38,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:10:38,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:38,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash 127579805, now seen corresponding path program 1 times [2024-12-02 10:10:38,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:38,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870699637] [2024-12-02 10:10:38,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:38,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:10:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870699637] [2024-12-02 10:10:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870699637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:39,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:39,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:10:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449448787] [2024-12-02 10:10:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:39,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:10:39,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:39,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:10:39,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:10:39,157 INFO L87 Difference]: Start difference. First operand 54 states and 79 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-12-02 10:10:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:39,192 INFO L93 Difference]: Finished difference Result 106 states and 157 transitions. [2024-12-02 10:10:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:10:39,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 105 [2024-12-02 10:10:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:39,194 INFO L225 Difference]: With dead ends: 106 [2024-12-02 10:10:39,194 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 10:10:39,195 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 [2024-12-02 10:10:39,196 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:39,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:10:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 10:10:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-12-02 10:10:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 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) [2024-12-02 10:10:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2024-12-02 10:10:39,204 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 105 [2024-12-02 10:10:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:39,205 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2024-12-02 10:10:39,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-12-02 10:10:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2024-12-02 10:10:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:10:39,207 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:39,207 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] [2024-12-02 10:10:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:10:39,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:39,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash 828644383, now seen corresponding path program 1 times [2024-12-02 10:10:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173630559] [2024-12-02 10:10:39,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:39,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:10:39,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:39,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173630559] [2024-12-02 10:10:39,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173630559] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:39,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:39,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:10:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055066579] [2024-12-02 10:10:39,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:39,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:10:39,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:39,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:10:39,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:10:39,422 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-12-02 10:10:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:39,571 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2024-12-02 10:10:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:10:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 105 [2024-12-02 10:10:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:39,573 INFO L225 Difference]: With dead ends: 159 [2024-12-02 10:10:39,573 INFO L226 Difference]: Without dead ends: 107 [2024-12-02 10:10:39,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:10:39,575 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 52 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:39,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 201 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:10:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-12-02 10:10:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2024-12-02 10:10:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 63 states have internal predecessors, (82), 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) [2024-12-02 10:10:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 146 transitions. [2024-12-02 10:10:39,594 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 146 transitions. Word has length 105 [2024-12-02 10:10:39,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:39,595 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 146 transitions. [2024-12-02 10:10:39,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-12-02 10:10:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 146 transitions. [2024-12-02 10:10:39,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 10:10:39,597 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:39,597 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] [2024-12-02 10:10:39,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:10:39,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:39,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -46810809, now seen corresponding path program 1 times [2024-12-02 10:10:39,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:39,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686582746] [2024-12-02 10:10:39,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:39,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:10:39,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:39,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686582746] [2024-12-02 10:10:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686582746] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:39,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:39,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:10:39,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078626234] [2024-12-02 10:10:39,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:39,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:10:39,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:39,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:10:39,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:10:39,964 INFO L87 Difference]: Start difference. First operand 98 states and 146 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-12-02 10:10:40,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:40,224 INFO L93 Difference]: Finished difference Result 265 states and 394 transitions. [2024-12-02 10:10:40,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:10:40,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 106 [2024-12-02 10:10:40,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:40,226 INFO L225 Difference]: With dead ends: 265 [2024-12-02 10:10:40,227 INFO L226 Difference]: Without dead ends: 213 [2024-12-02 10:10:40,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:10:40,228 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 136 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:40,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 478 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:10:40,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-12-02 10:10:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2024-12-02 10:10:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 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) [2024-12-02 10:10:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 168 transitions. [2024-12-02 10:10:40,245 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 168 transitions. Word has length 106 [2024-12-02 10:10:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:40,246 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 168 transitions. [2024-12-02 10:10:40,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-12-02 10:10:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 168 transitions. [2024-12-02 10:10:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 10:10:40,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:40,248 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] [2024-12-02 10:10:40,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:10:40,248 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:40,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1264021694, now seen corresponding path program 1 times [2024-12-02 10:10:40,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:40,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358273197] [2024-12-02 10:10:40,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:40,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:10:41,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358273197] [2024-12-02 10:10:41,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358273197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:41,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:41,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:10:41,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121282949] [2024-12-02 10:10:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:41,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:10:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:41,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:10:41,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:10:41,035 INFO L87 Difference]: Start difference. First operand 112 states and 168 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2024-12-02 10:10:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:41,396 INFO L93 Difference]: Finished difference Result 257 states and 373 transitions. [2024-12-02 10:10:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:10:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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 [2024-12-02 10:10:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:41,399 INFO L225 Difference]: With dead ends: 257 [2024-12-02 10:10:41,399 INFO L226 Difference]: Without dead ends: 198 [2024-12-02 10:10:41,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:10:41,401 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 118 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:10:41,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 378 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:10:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-02 10:10:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 158. [2024-12-02 10:10:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 107 states have (on average 1.2897196261682242) internal successors, (138), 108 states have internal predecessors, (138), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 10:10:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2024-12-02 10:10:41,431 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 107 [2024-12-02 10:10:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:41,431 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2024-12-02 10:10:41,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 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) [2024-12-02 10:10:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2024-12-02 10:10:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 10:10:41,433 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:41,434 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] [2024-12-02 10:10:41,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:10:41,434 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:41,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1241283900, now seen corresponding path program 1 times [2024-12-02 10:10:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182649768] [2024-12-02 10:10:41,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:10:41,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:10:41,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182649768] [2024-12-02 10:10:41,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182649768] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:41,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:41,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:10:41,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197484120] [2024-12-02 10:10:41,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:41,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:10:41,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:10:41,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:10:41,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:10:41,599 INFO L87 Difference]: Start difference. First operand 158 states and 230 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) [2024-12-02 10:10:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:41,626 INFO L93 Difference]: Finished difference Result 252 states and 363 transitions. [2024-12-02 10:10:41,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:10:41,626 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 [2024-12-02 10:10:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:41,639 INFO L225 Difference]: With dead ends: 252 [2024-12-02 10:10:41,639 INFO L226 Difference]: Without dead ends: 142 [2024-12-02 10:10:41,639 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 [2024-12-02 10:10:41,640 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 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 [2024-12-02 10:10:41,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:10:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-12-02 10:10:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-12-02 10:10:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 10:10:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2024-12-02 10:10:41,661 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 108 [2024-12-02 10:10:41,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:41,661 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2024-12-02 10:10:41,661 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) [2024-12-02 10:10:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2024-12-02 10:10:41,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 10:10:41,663 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:41,663 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] [2024-12-02 10:10:41,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:10:41,663 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:41,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1079678448, now seen corresponding path program 1 times [2024-12-02 10:10:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:10:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908350367] [2024-12-02 10:10:41,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:10:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:10:41,694 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:10:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:10:41,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 10:10:41,760 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 10:10:41,761 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 10:10:41,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:10:41,766 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:10:41,818 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 10:10:41,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 10:10:41 BoogieIcfgContainer [2024-12-02 10:10:41,821 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 10:10:41,821 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 10:10:41,821 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 10:10:41,821 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 10:10:41,822 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:10:38" (3/4) ... [2024-12-02 10:10:41,824 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 10:10:41,825 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 10:10:41,826 INFO L158 Benchmark]: Toolchain (without parser) took 4246.74ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 116.3MB in the beginning and 262.1MB in the end (delta: -145.7MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-12-02 10:10:41,826 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 82.4MB in the end (delta: 31.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:10:41,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.15ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 103.6MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:10:41,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.34ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 101.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 10:10:41,827 INFO L158 Benchmark]: Boogie Preprocessor took 35.46ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 99.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:10:41,827 INFO L158 Benchmark]: RCFGBuilder took 330.79ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 83.5MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 10:10:41,827 INFO L158 Benchmark]: TraceAbstraction took 3600.62ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 82.9MB in the beginning and 262.1MB in the end (delta: -179.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:10:41,828 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 318.8MB. Free memory was 262.1MB in the beginning and 262.1MB in the end (delta: 41.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 10:10:41,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 82.4MB in the end (delta: 31.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.15ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 103.6MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.34ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 101.7MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.46ms. Allocated memory is still 142.6MB. Free memory was 101.7MB in the beginning and 99.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.79ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 83.5MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3600.62ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 82.9MB in the beginning and 262.1MB in the end (delta: -179.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 318.8MB. Free memory was 262.1MB in the beginning and 262.1MB in the end (delta: 41.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of to_int at line 100, overapproximation of to_int at line 51, overapproximation of shiftRight at line 100, overapproximation of shiftRight at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned long int var_1_1 = 1; [L23] signed long int var_1_3 = 999999999; [L24] unsigned char var_1_4 = 0; [L25] signed long int var_1_5 = 4; [L26] unsigned char var_1_7 = 1; [L27] unsigned char var_1_9 = 1; [L28] signed long int var_1_10 = 64; [L29] signed long int var_1_11 = 9; [L30] signed long int var_1_12 = 199; [L31] signed long int var_1_13 = 3; [L32] unsigned char var_1_14 = 1; [L33] unsigned char var_1_16 = 2; [L34] unsigned char last_1_var_1_14 = 1; VAL [isInitial=0, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=999999999, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L104] isInitial = 1 [L105] FCALL initially() [L107] CALL updateLastVariables() [L97] last_1_var_1_14 = var_1_14 VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=999999999, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L107] RET updateLastVariables() [L108] CALL updateVariables() [L71] var_1_3 = __VERIFIER_nondet_long() [L72] CALL assume_abort_if_not(var_1_3 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L72] RET assume_abort_if_not(var_1_3 >= -2147483648) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L73] CALL assume_abort_if_not(var_1_3 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L73] RET assume_abort_if_not(var_1_3 <= 2147483647) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=0, var_1_5=4, var_1_7=1, var_1_9=1] [L74] var_1_4 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_5=4, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_5=4, var_1_7=1, var_1_9=1] [L75] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_5=4, var_1_7=1, var_1_9=1] [L76] CALL assume_abort_if_not(var_1_4 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=4, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=4, var_1_7=1, var_1_9=1] [L76] RET assume_abort_if_not(var_1_4 <= 1) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=4, var_1_7=1, var_1_9=1] [L77] var_1_5 = __VERIFIER_nondet_long() [L78] CALL assume_abort_if_not(var_1_5 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L78] RET assume_abort_if_not(var_1_5 >= -2147483648) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L79] CALL assume_abort_if_not(var_1_5 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L79] RET assume_abort_if_not(var_1_5 <= 2147483647) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L80] var_1_9 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_9 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L81] RET assume_abort_if_not(var_1_9 >= 1) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L82] CALL assume_abort_if_not(var_1_9 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L82] RET assume_abort_if_not(var_1_9 <= 1) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=9, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L83] var_1_11 = __VERIFIER_nondet_long() [L84] CALL assume_abort_if_not(var_1_11 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L84] RET assume_abort_if_not(var_1_11 >= -2147483648) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L85] CALL assume_abort_if_not(var_1_11 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L85] RET assume_abort_if_not(var_1_11 <= 2147483647) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=199, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L86] var_1_12 = __VERIFIER_nondet_long() [L87] CALL assume_abort_if_not(var_1_12 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L87] RET assume_abort_if_not(var_1_12 >= -2147483648) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L88] CALL assume_abort_if_not(var_1_12 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L88] RET assume_abort_if_not(var_1_12 <= 2147483647) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L89] var_1_13 = __VERIFIER_nondet_long() [L90] CALL assume_abort_if_not(var_1_13 >= -2147483648) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L90] RET assume_abort_if_not(var_1_13 >= -2147483648) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L91] CALL assume_abort_if_not(var_1_13 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L91] RET assume_abort_if_not(var_1_13 <= 2147483647) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=2, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L92] var_1_16 = __VERIFIER_nondet_uchar() [L93] CALL assume_abort_if_not(var_1_16 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L93] RET assume_abort_if_not(var_1_16 >= 0) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L94] CALL assume_abort_if_not(var_1_16 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L94] RET assume_abort_if_not(var_1_16 <= 254) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L108] RET updateVariables() [L109] CALL step() [L38] EXPR last_1_var_1_14 >> last_1_var_1_14 VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L38] COND TRUE (last_1_var_1_14 >> last_1_var_1_14) < (- last_1_var_1_14) [L39] var_1_7 = (var_1_4 || var_1_9) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=1, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L41] COND FALSE !(var_1_13 == (- var_1_12)) [L48] var_1_14 = 0 VAL [isInitial=1, last_1_var_1_14=1, var_1_10=64, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L50] COND TRUE var_1_5 > var_1_3 [L51] var_1_10 = 4.6 VAL [isInitial=1, last_1_var_1_14=1, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L55] unsigned char stepLocal_0 = var_1_10 > var_1_10; VAL [isInitial=1, last_1_var_1_14=1, stepLocal_0=0, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=1, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L56] COND FALSE !(stepLocal_0 && var_1_7) [L67] var_1_1 = var_1_14 VAL [isInitial=1, last_1_var_1_14=1, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=0, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L109] RET step() [L110] CALL, EXPR property() [L100] EXPR (((var_1_10 > var_1_10) && var_1_7) ? ((((((var_1_10) > ((- var_1_10))) ? (var_1_10) : ((- var_1_10)))) != var_1_10) ? (var_1_7 ? (var_1_1 == ((unsigned long int) 10u)) : (var_1_1 == ((unsigned long int) var_1_14))) : (var_1_1 == ((unsigned long int) var_1_14))) : (var_1_1 == ((unsigned long int) var_1_14))) && (((last_1_var_1_14 >> last_1_var_1_14) < (- last_1_var_1_14)) ? (var_1_7 == ((unsigned char) (var_1_4 || var_1_9))) : 1) VAL [isInitial=1, last_1_var_1_14=1, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=0, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L100] EXPR last_1_var_1_14 >> last_1_var_1_14 VAL [isInitial=1, last_1_var_1_14=1, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=0, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L100] EXPR (((var_1_10 > var_1_10) && var_1_7) ? ((((((var_1_10) > ((- var_1_10))) ? (var_1_10) : ((- var_1_10)))) != var_1_10) ? (var_1_7 ? (var_1_1 == ((unsigned long int) 10u)) : (var_1_1 == ((unsigned long int) var_1_14))) : (var_1_1 == ((unsigned long int) var_1_14))) : (var_1_1 == ((unsigned long int) var_1_14))) && (((last_1_var_1_14 >> last_1_var_1_14) < (- last_1_var_1_14)) ? (var_1_7 == ((unsigned char) (var_1_4 || var_1_9))) : 1) VAL [isInitial=1, last_1_var_1_14=1, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=0, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L100-L101] return (((((var_1_10 > var_1_10) && var_1_7) ? ((((((var_1_10) > ((- var_1_10))) ? (var_1_10) : ((- var_1_10)))) != var_1_10) ? (var_1_7 ? (var_1_1 == ((unsigned long int) 10u)) : (var_1_1 == ((unsigned long int) var_1_14))) : (var_1_1 == ((unsigned long int) var_1_14))) : (var_1_1 == ((unsigned long int) var_1_14))) && (((last_1_var_1_14 >> last_1_var_1_14) < (- last_1_var_1_14)) ? (var_1_7 == ((unsigned char) (var_1_4 || var_1_9))) : 1)) && ((var_1_5 > var_1_3) ? (var_1_10 == ((signed long int) 4.6)) : (var_1_10 == ((signed long int) ((((var_1_11) > (((((var_1_12) > (var_1_13)) ? (var_1_12) : (var_1_13))))) ? (var_1_11) : (((((var_1_12) > (var_1_13)) ? (var_1_12) : (var_1_13)))))))))) && ((var_1_13 == (- var_1_12)) ? ((var_1_7 && var_1_7) ? (var_1_14 == ((unsigned char) var_1_16)) : (var_1_14 == ((unsigned char) var_1_16))) : (var_1_14 == ((unsigned char) 0))) ; [L110] RET, EXPR property() [L110] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_14=1, var_1_10=1000000000, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=0, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] [L19] reach_error() VAL [isInitial=1, last_1_var_1_14=1, var_1_10=1000000000, var_1_11=-1, var_1_12=-2, var_1_13=-3, var_1_14=0, var_1_16=254, var_1_1=0, var_1_3=-1, var_1_4=1, var_1_5=0, var_1_7=1, var_1_9=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 7, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 1421 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 747 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 430 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 674 mSDtfsCounter, 430 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 150 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 850 NumberOfCodeBlocks, 850 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 859 SizeOfPredicates, 0 NumberOfNonLiveVariables, 243 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 3330/3360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 10:10:41,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 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_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/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_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/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_954be93f-80bb-4e65-8f9b-e6987dface6c/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 8d6e232da9a83d5f71424a24404b69fd0e4337eea9ca06f51ad2ecca1f048cf0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:10:43,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:10:43,849 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 10:10:43,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:10:43,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:10:43,876 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:10:43,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:10:43,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:10:43,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:10:43,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:10:43,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:10:43,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:10:43,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:10:43,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 10:10:43,878 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:10:43,879 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:10:43,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:10:43,879 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:10:43,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:10:43,880 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:10:43,880 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_954be93f-80bb-4e65-8f9b-e6987dface6c/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 -> 8d6e232da9a83d5f71424a24404b69fd0e4337eea9ca06f51ad2ecca1f048cf0 [2024-12-02 10:10:44,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:10:44,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:10:44,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:10:44,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:10:44,127 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:10:44,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i [2024-12-02 10:10:46,748 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/d3f684c6d/b64882f6eafd4430ada059da02f32470/FLAG76a9d331d [2024-12-02 10:10:46,945 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:10:46,946 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i [2024-12-02 10:10:46,955 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/d3f684c6d/b64882f6eafd4430ada059da02f32470/FLAG76a9d331d [2024-12-02 10:10:47,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/data/d3f684c6d/b64882f6eafd4430ada059da02f32470 [2024-12-02 10:10:47,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:10:47,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:10:47,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:10:47,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:10:47,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:10:47,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394dcd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47, skipping insertion in model container [2024-12-02 10:10:47,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:10:47,427 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_954be93f-80bb-4e65-8f9b-e6987dface6c/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i[916,929] [2024-12-02 10:10:47,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:10:47,476 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:10:47,484 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_954be93f-80bb-4e65-8f9b-e6987dface6c/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-36.i[916,929] [2024-12-02 10:10:47,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:10:47,513 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:10:47,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47 WrapperNode [2024-12-02 10:10:47,513 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:10:47,514 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:10:47,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:10:47,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:10:47,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,541 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 105 [2024-12-02 10:10:47,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:10:47,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:10:47,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:10:47,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:10:47,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,550 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,557 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]. [2024-12-02 10:10:47,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:10:47,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:10:47,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:10:47,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:10:47,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (1/1) ... [2024-12-02 10:10:47,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:10:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:10:47,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:10:47,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:10:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:10:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 10:10:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:10:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:10:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:10:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:10:47,692 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:10:47,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:10:47,873 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-12-02 10:10:47,873 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:10:47,882 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:10:47,883 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:10:47,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:10:47 BoogieIcfgContainer [2024-12-02 10:10:47,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:10:47,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:10:47,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:10:47,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:10:47,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:10:47" (1/3) ... [2024-12-02 10:10:47,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ddea1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:10:47, skipping insertion in model container [2024-12-02 10:10:47,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:10:47" (2/3) ... [2024-12-02 10:10:47,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ddea1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:10:47, skipping insertion in model container [2024-12-02 10:10:47,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:10:47" (3/3) ... [2024-12-02 10:10:47,892 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-36.i [2024-12-02 10:10:47,906 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:10:47,907 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-36.i that has 2 procedures, 51 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:10:47,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:10:47,954 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;@6cfdaff7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:10:47,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:10:47,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 32 states have (on average 1.375) internal successors, (44), 33 states have internal predecessors, (44), 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) [2024-12-02 10:10:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 10:10:47,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:47,967 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] [2024-12-02 10:10:47,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:47,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:47,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1273255444, now seen corresponding path program 1 times [2024-12-02 10:10:47,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:10:47,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59998253] [2024-12-02 10:10:47,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:47,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 10:10:47,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 10:10:47,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 10:10:47,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-12-02 10:10:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:48,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:10:48,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:10:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-12-02 10:10:48,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:10:48,175 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:10:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59998253] [2024-12-02 10:10:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59998253] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:10:48,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:10:48,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:10:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799383737] [2024-12-02 10:10:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:10:48,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:10:48,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:10:48,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:10:48,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:10:48,203 INFO L87 Difference]: Start difference. First operand has 51 states, 32 states have (on average 1.375) internal successors, (44), 33 states have internal predecessors, (44), 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 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:10:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:10:48,222 INFO L93 Difference]: Finished difference Result 95 states and 162 transitions. [2024-12-02 10:10:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:10:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 102 [2024-12-02 10:10:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:10:48,229 INFO L225 Difference]: With dead ends: 95 [2024-12-02 10:10:48,229 INFO L226 Difference]: Without dead ends: 47 [2024-12-02 10:10:48,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:10:48,234 INFO L435 NwaCegarLoop]: 68 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, 68 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 [2024-12-02 10:10:48,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:10:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-12-02 10:10:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-12-02 10:10:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2024-12-02 10:10:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2024-12-02 10:10:48,268 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 102 [2024-12-02 10:10:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:10:48,269 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2024-12-02 10:10:48,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 10:10:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2024-12-02 10:10:48,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 10:10:48,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:10:48,272 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] [2024-12-02 10:10:48,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-12-02 10:10:48,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 10:10:48,473 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:10:48,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:10:48,474 INFO L85 PathProgramCache]: Analyzing trace with hash 881071126, now seen corresponding path program 1 times [2024-12-02 10:10:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:10:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944162771] [2024-12-02 10:10:48,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 10:10:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 10:10:48,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 10:10:48,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-12-02 10:10:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:10:48,579 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:10:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:10:48,654 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-12-02 10:10:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [459200626] [2024-12-02 10:10:48,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:10:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 10:10:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 10:10:48,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 10:10:48,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-12-02 10:10:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:10:48,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:10:48,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:15:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:15:28,542 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:15:28,542 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:15:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944162771] [2024-12-02 10:15:28,542 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:15:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [459200626] [2024-12-02 10:15:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [459200626] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:15:28,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:15:28,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:15:28,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570864461] [2024-12-02 10:15:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:15:28,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:15:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:15:28,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:15:28,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:15:28,545 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2024-12-02 10:15:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:15:28,916 INFO L93 Difference]: Finished difference Result 132 states and 190 transitions. [2024-12-02 10:15:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:15:28,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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 102 [2024-12-02 10:15:28,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:15:28,917 INFO L225 Difference]: With dead ends: 132 [2024-12-02 10:15:28,917 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 10:15:28,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:15:28,918 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 69 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:15:28,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 320 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:15:28,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 10:15:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2024-12-02 10:15:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 10:15:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 118 transitions. [2024-12-02 10:15:28,930 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 118 transitions. Word has length 102 [2024-12-02 10:15:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:15:28,931 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 118 transitions. [2024-12-02 10:15:28,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2024-12-02 10:15:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 118 transitions. [2024-12-02 10:15:28,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 10:15:28,932 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:15:28,932 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] [2024-12-02 10:15:28,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-12-02 10:15:29,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-12-02 10:15:29,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 10:15:29,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:15:29,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:15:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1638888808, now seen corresponding path program 1 times [2024-12-02 10:15:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:15:29,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679563637] [2024-12-02 10:15:29,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:15:29,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 10:15:29,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 10:15:29,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 10:15:29,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-12-02 10:15:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:15:29,399 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:15:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:15:29,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-12-02 10:15:29,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [295614745] [2024-12-02 10:15:29,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:15:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 10:15:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 10:15:29,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 10:15:29,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-12-02 10:15:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:15:29,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 10:15:29,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:17:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 10:17:51,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:17:51,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 10:17:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679563637] [2024-12-02 10:17:51,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:17:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [295614745] [2024-12-02 10:17:51,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [295614745] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:17:51,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:17:51,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 10:17:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666871939] [2024-12-02 10:17:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:17:51,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 10:17:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 10:17:51,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 10:17:51,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:17:51,213 INFO L87 Difference]: Start difference. First operand 82 states and 118 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-12-02 10:17:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:17:51,729 INFO L93 Difference]: Finished difference Result 163 states and 233 transitions. [2024-12-02 10:17:51,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:17:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 102 [2024-12-02 10:17:51,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:17:51,731 INFO L225 Difference]: With dead ends: 163 [2024-12-02 10:17:51,731 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 10:17:51,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:17:51,732 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 64 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:17:51,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 306 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:17:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 10:17:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2024-12-02 10:17:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 49 states have internal predecessors, (55), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 10:17:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 107 transitions. [2024-12-02 10:17:51,745 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 107 transitions. Word has length 102 [2024-12-02 10:17:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:17:51,745 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 107 transitions. [2024-12-02 10:17:51,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-12-02 10:17:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 107 transitions. [2024-12-02 10:17:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 10:17:51,747 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:17:51,747 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] [2024-12-02 10:17:51,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-12-02 10:17:51,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-12-02 10:17:52,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 10:17:52,148 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:17:52,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:17:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 574091346, now seen corresponding path program 1 times [2024-12-02 10:17:52,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 10:17:52,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866007443] [2024-12-02 10:17:52,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:17:52,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-12-02 10:17:52,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 10:17:52,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-12-02 10:17:52,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-12-02 10:17:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:17:52,212 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 10:17:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 10:17:52,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-12-02 10:17:52,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1462277134] [2024-12-02 10:17:52,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:17:52,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 10:17:52,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 10:17:52,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 10:17:52,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_954be93f-80bb-4e65-8f9b-e6987dface6c/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-02 10:17:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:17:52,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:17:52,440 INFO L279 TraceCheckSpWp]: Computing forward predicates...