./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 bcba96e12d465ba8f2cd356f8297b415f9e65918ebe10de52c572e6fb77ffa7c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:55:04,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:55:04,547 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:55:04,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:55:04,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:55:04,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:55:04,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:55:04,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:55:04,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:55:04,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:55:04,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:55:04,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:55:04,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:55:04,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:55:04,572 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:55:04,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:55:04,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:55:04,574 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:55:04,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:55:04,574 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:55:04,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:55:04,574 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:55:04,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:55:04,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:55:04,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:55:04,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:55:04,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:55:04,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:55:04,576 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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 -> bcba96e12d465ba8f2cd356f8297b415f9e65918ebe10de52c572e6fb77ffa7c [2024-12-02 12:55:04,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:55:04,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:55:04,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:55:04,787 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:55:04,787 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:55:04,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2024-12-02 12:55:07,393 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/52222b3b1/c448296711494f7b98342b1a10e3152b/FLAG1c005a1e1 [2024-12-02 12:55:07,605 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:55:07,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2024-12-02 12:55:07,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/52222b3b1/c448296711494f7b98342b1a10e3152b/FLAG1c005a1e1 [2024-12-02 12:55:07,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/52222b3b1/c448296711494f7b98342b1a10e3152b [2024-12-02 12:55:07,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:55:07,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:55:07,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:55:07,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:55:07,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:55:07,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:55:07" (1/1) ... [2024-12-02 12:55:07,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51430aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:07, skipping insertion in model container [2024-12-02 12:55:07,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:55:07" (1/1) ... [2024-12-02 12:55:07,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:55:08,080 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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i[919,932] [2024-12-02 12:55:08,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:55:08,146 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:55:08,153 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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i[919,932] [2024-12-02 12:55:08,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:55:08,197 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:55:08,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08 WrapperNode [2024-12-02 12:55:08,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:55:08,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:55:08,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:55:08,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:55:08,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,237 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 191 [2024-12-02 12:55:08,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:55:08,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:55:08,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:55:08,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:55:08,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,258 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 12:55:08,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,266 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:55:08,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:55:08,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:55:08,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:55:08,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (1/1) ... [2024-12-02 12:55:08,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:55:08,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:55:08,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:55:08,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:55:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:55:08,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:55:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:55:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:55:08,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:55:08,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:55:08,401 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:55:08,402 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:55:08,699 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-02 12:55:08,699 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:55:08,708 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:55:08,709 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:55:08,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:08 BoogieIcfgContainer [2024-12-02 12:55:08,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:55:08,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:55:08,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:55:08,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:55:08,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:55:07" (1/3) ... [2024-12-02 12:55:08,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d48f1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:55:08, skipping insertion in model container [2024-12-02 12:55:08,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:55:08" (2/3) ... [2024-12-02 12:55:08,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d48f1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:55:08, skipping insertion in model container [2024-12-02 12:55:08,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:55:08" (3/3) ... [2024-12-02 12:55:08,717 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2024-12-02 12:55:08,730 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:55:08,732 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i that has 2 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:55:08,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:55:08,795 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;@56dbf3f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:55:08,795 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:55:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:55:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 12:55:08,810 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:08,810 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:08,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:08,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1106573422, now seen corresponding path program 1 times [2024-12-02 12:55:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:08,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938291616] [2024-12-02 12:55:08,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-12-02 12:55:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:09,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938291616] [2024-12-02 12:55:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938291616] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:55:09,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291367602] [2024-12-02 12:55:09,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:09,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:55:09,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:55:09,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:55:09,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:55:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:09,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:55:09,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:55:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-12-02 12:55:09,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:55:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291367602] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:09,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:55:09,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:55:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093505056] [2024-12-02 12:55:09,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:09,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:55:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:09,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:55:09,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:55:09,352 INFO L87 Difference]: Start difference. First operand has 85 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:55:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:09,377 INFO L93 Difference]: Finished difference Result 163 states and 284 transitions. [2024-12-02 12:55:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:55:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 173 [2024-12-02 12:55:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:09,384 INFO L225 Difference]: With dead ends: 163 [2024-12-02 12:55:09,384 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 12:55:09,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 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 12:55:09,388 INFO L435 NwaCegarLoop]: 124 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, 124 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 12:55:09,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:55:09,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 12:55:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-12-02 12:55:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:55:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 124 transitions. [2024-12-02 12:55:09,423 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 124 transitions. Word has length 173 [2024-12-02 12:55:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:09,423 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 124 transitions. [2024-12-02 12:55:09,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:55:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 124 transitions. [2024-12-02 12:55:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 12:55:09,426 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:09,426 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:09,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:55:09,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:55:09,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:09,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1916054174, now seen corresponding path program 1 times [2024-12-02 12:55:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8186197] [2024-12-02 12:55:09,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:09,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8186197] [2024-12-02 12:55:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8186197] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:55:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312022002] [2024-12-02 12:55:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:09,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:55:09,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:09,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:55:09,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:55:09,864 INFO L87 Difference]: Start difference. First operand 81 states and 124 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:09,904 INFO L93 Difference]: Finished difference Result 188 states and 289 transitions. [2024-12-02 12:55:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:55:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-12-02 12:55:09,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:09,907 INFO L225 Difference]: With dead ends: 188 [2024-12-02 12:55:09,908 INFO L226 Difference]: Without dead ends: 110 [2024-12-02 12:55:09,908 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 12:55:09,909 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 37 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:09,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 236 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:55:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-12-02 12:55:09,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2024-12-02 12:55:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:55:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 139 transitions. [2024-12-02 12:55:09,921 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 139 transitions. Word has length 173 [2024-12-02 12:55:09,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:09,922 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 139 transitions. [2024-12-02 12:55:09,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 139 transitions. [2024-12-02 12:55:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 12:55:09,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:09,924 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:09,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:55:09,924 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:09,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1792107108, now seen corresponding path program 1 times [2024-12-02 12:55:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807182055] [2024-12-02 12:55:09,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:10,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807182055] [2024-12-02 12:55:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807182055] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:55:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880078976] [2024-12-02 12:55:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:10,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:55:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:10,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:55:10,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:55:10,074 INFO L87 Difference]: Start difference. First operand 90 states and 139 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:10,122 INFO L93 Difference]: Finished difference Result 261 states and 405 transitions. [2024-12-02 12:55:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:55:10,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-12-02 12:55:10,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:10,125 INFO L225 Difference]: With dead ends: 261 [2024-12-02 12:55:10,125 INFO L226 Difference]: Without dead ends: 174 [2024-12-02 12:55:10,126 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 12:55:10,127 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 113 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:10,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 228 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:55:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-12-02 12:55:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-12-02 12:55:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.376068376068376) internal successors, (161), 117 states have internal predecessors, (161), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-12-02 12:55:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 265 transitions. [2024-12-02 12:55:10,149 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 265 transitions. Word has length 173 [2024-12-02 12:55:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:10,149 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 265 transitions. [2024-12-02 12:55:10,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 265 transitions. [2024-12-02 12:55:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:55:10,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:10,152 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:10,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:55:10,153 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:10,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:10,153 INFO L85 PathProgramCache]: Analyzing trace with hash -684742561, now seen corresponding path program 1 times [2024-12-02 12:55:10,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69183352] [2024-12-02 12:55:10,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69183352] [2024-12-02 12:55:24,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69183352] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:24,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:24,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:55:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108023615] [2024-12-02 12:55:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:24,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:55:24,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:24,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:55:24,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:24,951 INFO L87 Difference]: Start difference. First operand 172 states and 265 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:25,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:25,332 INFO L93 Difference]: Finished difference Result 464 states and 694 transitions. [2024-12-02 12:55:25,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:55:25,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-12-02 12:55:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:25,335 INFO L225 Difference]: With dead ends: 464 [2024-12-02 12:55:25,335 INFO L226 Difference]: Without dead ends: 295 [2024-12-02 12:55:25,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:25,336 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 82 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:25,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 297 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:55:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-12-02 12:55:25,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 244. [2024-12-02 12:55:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 171 states have (on average 1.345029239766082) internal successors, (230), 173 states have internal predecessors, (230), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 12:55:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 366 transitions. [2024-12-02 12:55:25,384 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 366 transitions. Word has length 174 [2024-12-02 12:55:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:25,385 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 366 transitions. [2024-12-02 12:55:25,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 366 transitions. [2024-12-02 12:55:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:55:25,388 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:25,388 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:25,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:55:25,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:25,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1494089187, now seen corresponding path program 1 times [2024-12-02 12:55:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453969482] [2024-12-02 12:55:25,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:27,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:27,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453969482] [2024-12-02 12:55:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453969482] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:55:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071667633] [2024-12-02 12:55:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:27,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:55:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:27,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:55:27,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:27,566 INFO L87 Difference]: Start difference. First operand 244 states and 366 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:27,942 INFO L93 Difference]: Finished difference Result 536 states and 794 transitions. [2024-12-02 12:55:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:55:27,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-12-02 12:55:27,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:27,945 INFO L225 Difference]: With dead ends: 536 [2024-12-02 12:55:27,945 INFO L226 Difference]: Without dead ends: 295 [2024-12-02 12:55:27,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:27,947 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 77 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:27,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 329 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:55:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-12-02 12:55:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 239. [2024-12-02 12:55:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 166 states have (on average 1.3433734939759037) internal successors, (223), 168 states have internal predecessors, (223), 68 states have call successors, (68), 4 states have call predecessors, (68), 4 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 12:55:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 359 transitions. [2024-12-02 12:55:27,985 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 359 transitions. Word has length 174 [2024-12-02 12:55:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:27,986 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 359 transitions. [2024-12-02 12:55:27,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 359 transitions. [2024-12-02 12:55:27,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:55:27,988 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:27,989 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:27,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:55:27,989 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:27,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1964606239, now seen corresponding path program 1 times [2024-12-02 12:55:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:27,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569281477] [2024-12-02 12:55:27,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:27,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:37,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569281477] [2024-12-02 12:55:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569281477] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:37,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:37,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:55:37,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408680402] [2024-12-02 12:55:37,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:37,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:55:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:37,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:55:37,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:37,339 INFO L87 Difference]: Start difference. First operand 239 states and 359 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:37,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:37,800 INFO L93 Difference]: Finished difference Result 558 states and 824 transitions. [2024-12-02 12:55:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:55:37,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-12-02 12:55:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:37,804 INFO L225 Difference]: With dead ends: 558 [2024-12-02 12:55:37,804 INFO L226 Difference]: Without dead ends: 322 [2024-12-02 12:55:37,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:37,805 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 87 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:37,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 317 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:55:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-12-02 12:55:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2024-12-02 12:55:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 209 states have (on average 1.2870813397129186) internal successors, (269), 214 states have internal predecessors, (269), 96 states have call successors, (96), 8 states have call predecessors, (96), 8 states have return successors, (96), 91 states have call predecessors, (96), 96 states have call successors, (96) [2024-12-02 12:55:37,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 461 transitions. [2024-12-02 12:55:37,857 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 461 transitions. Word has length 174 [2024-12-02 12:55:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:37,857 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 461 transitions. [2024-12-02 12:55:37,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 461 transitions. [2024-12-02 12:55:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:55:37,858 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:37,858 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:37,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:55:37,858 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:37,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1521014431, now seen corresponding path program 1 times [2024-12-02 12:55:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:37,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729715515] [2024-12-02 12:55:37,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:37,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:38,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729715515] [2024-12-02 12:55:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729715515] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:38,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:55:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461060906] [2024-12-02 12:55:38,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:38,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:55:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:38,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:55:38,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:38,895 INFO L87 Difference]: Start difference. First operand 314 states and 461 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:39,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:39,399 INFO L93 Difference]: Finished difference Result 628 states and 910 transitions. [2024-12-02 12:55:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:55:39,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-12-02 12:55:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:39,402 INFO L225 Difference]: With dead ends: 628 [2024-12-02 12:55:39,402 INFO L226 Difference]: Without dead ends: 330 [2024-12-02 12:55:39,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:55:39,403 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 82 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:39,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 521 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:55:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-12-02 12:55:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 274. [2024-12-02 12:55:39,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 185 states have (on average 1.3027027027027027) internal successors, (241), 188 states have internal predecessors, (241), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 12:55:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 401 transitions. [2024-12-02 12:55:39,462 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 401 transitions. Word has length 174 [2024-12-02 12:55:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:39,462 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 401 transitions. [2024-12-02 12:55:39,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 401 transitions. [2024-12-02 12:55:39,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:55:39,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:39,464 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:39,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:55:39,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:39,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:39,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2060853403, now seen corresponding path program 1 times [2024-12-02 12:55:39,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:39,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064082447] [2024-12-02 12:55:39,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:39,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:55:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:55:39,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:55:39,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064082447] [2024-12-02 12:55:39,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064082447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:55:39,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:55:39,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:55:39,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855576599] [2024-12-02 12:55:39,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:55:39,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:55:39,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:55:39,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:55:39,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:55:39,735 INFO L87 Difference]: Start difference. First operand 274 states and 401 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:40,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:55:40,082 INFO L93 Difference]: Finished difference Result 829 states and 1193 transitions. [2024-12-02 12:55:40,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:55:40,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 12:55:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:55:40,086 INFO L225 Difference]: With dead ends: 829 [2024-12-02 12:55:40,086 INFO L226 Difference]: Without dead ends: 571 [2024-12-02 12:55:40,088 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 12:55:40,088 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 117 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:55:40,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 323 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:55:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-12-02 12:55:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 564. [2024-12-02 12:55:40,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 391 states have (on average 1.2915601023017902) internal successors, (505), 400 states have internal predecessors, (505), 152 states have call successors, (152), 20 states have call predecessors, (152), 20 states have return successors, (152), 143 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 12:55:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 809 transitions. [2024-12-02 12:55:40,277 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 809 transitions. Word has length 175 [2024-12-02 12:55:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:55:40,277 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 809 transitions. [2024-12-02 12:55:40,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:55:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 809 transitions. [2024-12-02 12:55:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:55:40,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:55:40,279 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:55:40,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:55:40,279 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:55:40,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:55:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 11333371, now seen corresponding path program 1 times [2024-12-02 12:55:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:55:40,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011162004] [2024-12-02 12:55:40,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:55:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:55:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:57:09,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011162004] [2024-12-02 12:57:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011162004] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:57:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104485298] [2024-12-02 12:57:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:09,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:57:09,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:09,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:57:09,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:57:09,888 INFO L87 Difference]: Start difference. First operand 564 states and 809 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:57:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:12,238 INFO L93 Difference]: Finished difference Result 712 states and 991 transitions. [2024-12-02 12:57:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:57:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 12:57:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:12,242 INFO L225 Difference]: With dead ends: 712 [2024-12-02 12:57:12,242 INFO L226 Difference]: Without dead ends: 710 [2024-12-02 12:57:12,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:57:12,243 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 117 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:12,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 594 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:57:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-12-02 12:57:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 600. [2024-12-02 12:57:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 427 states have (on average 1.2903981264637003) internal successors, (551), 436 states have internal predecessors, (551), 152 states have call successors, (152), 20 states have call predecessors, (152), 20 states have return successors, (152), 143 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 12:57:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 855 transitions. [2024-12-02 12:57:12,406 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 855 transitions. Word has length 175 [2024-12-02 12:57:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:12,407 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 855 transitions. [2024-12-02 12:57:12,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:57:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 855 transitions. [2024-12-02 12:57:12,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:57:12,408 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:12,409 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:57:12,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:57:12,409 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:12,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 691391741, now seen corresponding path program 1 times [2024-12-02 12:57:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847878499] [2024-12-02 12:57:12,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:58:09,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:58:09,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847878499] [2024-12-02 12:58:09,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847878499] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:09,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:09,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:58:09,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523715165] [2024-12-02 12:58:09,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:09,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:58:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:58:09,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:58:09,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:58:09,118 INFO L87 Difference]: Start difference. First operand 600 states and 855 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:58:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:11,389 INFO L93 Difference]: Finished difference Result 722 states and 1001 transitions. [2024-12-02 12:58:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:58:11,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 12:58:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:11,393 INFO L225 Difference]: With dead ends: 722 [2024-12-02 12:58:11,393 INFO L226 Difference]: Without dead ends: 720 [2024-12-02 12:58:11,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:58:11,394 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 109 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:58:11,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 741 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:58:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-12-02 12:58:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 600. [2024-12-02 12:58:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 427 states have (on average 1.2903981264637003) internal successors, (551), 436 states have internal predecessors, (551), 152 states have call successors, (152), 20 states have call predecessors, (152), 20 states have return successors, (152), 143 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 12:58:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 855 transitions. [2024-12-02 12:58:11,585 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 855 transitions. Word has length 175 [2024-12-02 12:58:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:11,586 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 855 transitions. [2024-12-02 12:58:11,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:58:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 855 transitions. [2024-12-02 12:58:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:58:11,588 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:11,588 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:58:11,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:58:11,588 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:11,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:11,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1009734983, now seen corresponding path program 1 times [2024-12-02 12:58:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:58:11,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79286411] [2024-12-02 12:58:11,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:11,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:58:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:59:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:59:31,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:59:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79286411] [2024-12-02 12:59:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79286411] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:59:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:59:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:59:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147344905] [2024-12-02 12:59:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:59:31,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:59:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:59:31,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:59:31,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:59:31,940 INFO L87 Difference]: Start difference. First operand 600 states and 855 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:59:34,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:59:34,270 INFO L93 Difference]: Finished difference Result 748 states and 1037 transitions. [2024-12-02 12:59:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:59:34,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 12:59:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:59:34,275 INFO L225 Difference]: With dead ends: 748 [2024-12-02 12:59:34,275 INFO L226 Difference]: Without dead ends: 746 [2024-12-02 12:59:34,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-12-02 12:59:34,276 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 113 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:59:34,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 699 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:59:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-12-02 12:59:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 636. [2024-12-02 12:59:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 463 states have (on average 1.2894168466522677) internal successors, (597), 472 states have internal predecessors, (597), 152 states have call successors, (152), 20 states have call predecessors, (152), 20 states have return successors, (152), 143 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 12:59:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 901 transitions. [2024-12-02 12:59:34,471 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 901 transitions. Word has length 175 [2024-12-02 12:59:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:59:34,471 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 901 transitions. [2024-12-02 12:59:34,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:59:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 901 transitions. [2024-12-02 12:59:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:59:34,473 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:59:34,473 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:34,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:59:34,473 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:59:34,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:59:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash -329676613, now seen corresponding path program 1 times [2024-12-02 12:59:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:59:34,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349494518] [2024-12-02 12:59:34,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:59:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:59:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:00:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:00:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:00:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349494518] [2024-12-02 13:00:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349494518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:00:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:00:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:00:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757009961] [2024-12-02 13:00:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:00:35,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:00:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:00:35,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:00:35,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:00:35,918 INFO L87 Difference]: Start difference. First operand 636 states and 901 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:00:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:00:38,924 INFO L93 Difference]: Finished difference Result 758 states and 1047 transitions. [2024-12-02 13:00:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:00:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 13:00:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:00:38,927 INFO L225 Difference]: With dead ends: 758 [2024-12-02 13:00:38,927 INFO L226 Difference]: Without dead ends: 756 [2024-12-02 13:00:38,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:00:38,928 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 89 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:00:38,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 718 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 13:00:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2024-12-02 13:00:39,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 636. [2024-12-02 13:00:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 463 states have (on average 1.2894168466522677) internal successors, (597), 472 states have internal predecessors, (597), 152 states have call successors, (152), 20 states have call predecessors, (152), 20 states have return successors, (152), 143 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 13:00:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 901 transitions. [2024-12-02 13:00:39,051 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 901 transitions. Word has length 175 [2024-12-02 13:00:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:00:39,052 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 901 transitions. [2024-12-02 13:00:39,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:00:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 901 transitions. [2024-12-02 13:00:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:00:39,053 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:00:39,053 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:39,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:00:39,053 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:00:39,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:00:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2100100387, now seen corresponding path program 1 times [2024-12-02 13:00:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:00:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311201082] [2024-12-02 13:00:39,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:00:39,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:00:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:03:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:03:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:03:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311201082] [2024-12-02 13:03:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311201082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:03:18,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:03:18,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 13:03:18,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928881284] [2024-12-02 13:03:18,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:03:18,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:03:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:03:18,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:03:18,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:03:18,357 INFO L87 Difference]: Start difference. First operand 636 states and 901 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:03:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:03:25,011 INFO L93 Difference]: Finished difference Result 1392 states and 1935 transitions. [2024-12-02 13:03:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 13:03:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 13:03:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:03:25,016 INFO L225 Difference]: With dead ends: 1392 [2024-12-02 13:03:25,016 INFO L226 Difference]: Without dead ends: 772 [2024-12-02 13:03:25,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2024-12-02 13:03:25,018 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 312 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:03:25,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1292 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 13:03:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-12-02 13:03:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 474. [2024-12-02 13:03:25,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 349 states have (on average 1.2750716332378222) internal successors, (445), 356 states have internal predecessors, (445), 108 states have call successors, (108), 16 states have call predecessors, (108), 16 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 13:03:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 661 transitions. [2024-12-02 13:03:25,108 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 661 transitions. Word has length 175 [2024-12-02 13:03:25,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:03:25,109 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 661 transitions. [2024-12-02 13:03:25,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:03:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 661 transitions. [2024-12-02 13:03:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:03:25,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:03:25,110 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:25,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:03:25,110 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:03:25,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:03:25,111 INFO L85 PathProgramCache]: Analyzing trace with hash -419859547, now seen corresponding path program 1 times [2024-12-02 13:03:25,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:03:25,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408006771] [2024-12-02 13:03:25,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:03:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:03:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:05:26,292 WARN L286 SmtUtils]: Spent 10.84s on a formula simplification. DAG size of input: 285 DAG size of output: 232 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:07:18,459 WARN L286 SmtUtils]: Spent 11.55s on a formula simplification. DAG size of input: 287 DAG size of output: 234 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:07:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:07:18,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:18,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408006771] [2024-12-02 13:07:18,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408006771] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:18,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:18,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 13:07:18,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717856850] [2024-12-02 13:07:18,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:18,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 13:07:18,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:18,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 13:07:18,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:07:18,612 INFO L87 Difference]: Start difference. First operand 474 states and 661 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:07:37,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 13:07:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:38,953 INFO L93 Difference]: Finished difference Result 762 states and 1031 transitions. [2024-12-02 13:07:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 13:07:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 13:07:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:38,956 INFO L225 Difference]: With dead ends: 762 [2024-12-02 13:07:38,956 INFO L226 Difference]: Without dead ends: 760 [2024-12-02 13:07:38,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 40.4s TimeCoverageRelationStatistics Valid=252, Invalid=560, Unknown=0, NotChecked=0, Total=812 [2024-12-02 13:07:38,957 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 277 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:38,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1335 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-12-02 13:07:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-12-02 13:07:39,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 472. [2024-12-02 13:07:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 347 states have (on average 1.276657060518732) internal successors, (443), 354 states have internal predecessors, (443), 108 states have call successors, (108), 16 states have call predecessors, (108), 16 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 13:07:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 659 transitions. [2024-12-02 13:07:39,081 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 659 transitions. Word has length 175 [2024-12-02 13:07:39,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:39,081 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 659 transitions. [2024-12-02 13:07:39,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:07:39,081 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 659 transitions. [2024-12-02 13:07:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:07:39,083 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:39,083 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:39,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:07:39,083 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:39,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash 820236709, now seen corresponding path program 1 times [2024-12-02 13:07:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563087505] [2024-12-02 13:07:39,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:34,863 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 13:08:34,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 13:08:34,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:08:34,864 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-12-02 13:08:34,869 INFO L158 Benchmark]: Toolchain (without parser) took 806905.48ms. Allocated memory was 142.6MB in the beginning and 872.4MB in the end (delta: 729.8MB). Free memory was 117.5MB in the beginning and 339.2MB in the end (delta: -221.7MB). Peak memory consumption was 537.6MB. Max. memory is 16.1GB. [2024-12-02 13:08:34,869 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:08:34,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.97ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 102.1MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:08:34,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.90ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 98.9MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:08:34,870 INFO L158 Benchmark]: Boogie Preprocessor took 40.04ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 94.5MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 13:08:34,871 INFO L158 Benchmark]: RCFGBuilder took 431.15ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 71.1MB in the end (delta: 23.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:08:34,871 INFO L158 Benchmark]: TraceAbstraction took 806157.55ms. Allocated memory was 142.6MB in the beginning and 872.4MB in the end (delta: 729.8MB). Free memory was 70.6MB in the beginning and 339.2MB in the end (delta: -268.6MB). Peak memory consumption was 495.6MB. Max. memory is 16.1GB. [2024-12-02 13:08:34,873 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.97ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 102.1MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.90ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 98.9MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.04ms. Allocated memory is still 142.6MB. Free memory was 98.9MB in the beginning and 94.5MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 431.15ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 71.1MB in the end (delta: 23.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 806157.55ms. Allocated memory was 142.6MB in the beginning and 872.4MB in the end (delta: 729.8MB). Free memory was 70.6MB in the beginning and 339.2MB in the end (delta: -268.6MB). Peak memory consumption was 495.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 bcba96e12d465ba8f2cd356f8297b415f9e65918ebe10de52c572e6fb77ffa7c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:08:36,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:08:36,742 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 13:08:36,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:08:36,747 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:08:36,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:08:36,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:08:36,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:08:36,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:08:36,770 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:08:36,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:08:36,770 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:08:36,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:08:36,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:08:36,771 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:08:36,771 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:08:36,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:08:36,771 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:08:36,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:08:36,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:08:36,772 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:36,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:36,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:08:36,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:08:36,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:08:36,774 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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 -> bcba96e12d465ba8f2cd356f8297b415f9e65918ebe10de52c572e6fb77ffa7c [2024-12-02 13:08:37,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:08:37,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:08:37,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:08:37,034 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:08:37,035 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:08:37,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2024-12-02 13:08:39,823 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/e27c56e29/39f08c23224846b89ca6a06ea50578aa/FLAG266fb6e93 [2024-12-02 13:08:40,024 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:08:40,025 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2024-12-02 13:08:40,035 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/e27c56e29/39f08c23224846b89ca6a06ea50578aa/FLAG266fb6e93 [2024-12-02 13:08:40,047 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/data/e27c56e29/39f08c23224846b89ca6a06ea50578aa [2024-12-02 13:08:40,049 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:08:40,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:08:40,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:08:40,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:08:40,055 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:08:40,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250e0fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40, skipping insertion in model container [2024-12-02 13:08:40,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,072 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:08:40,182 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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i[919,932] [2024-12-02 13:08:40,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:08:40,264 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:08:40,272 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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i[919,932] [2024-12-02 13:08:40,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:08:40,327 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:08:40,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40 WrapperNode [2024-12-02 13:08:40,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:08:40,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:08:40,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:08:40,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:08:40,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,370 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186 [2024-12-02 13:08:40,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:08:40,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:08:40,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:08:40,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:08:40,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,398 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 13:08:40,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,423 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:08:40,424 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:08:40,424 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:08:40,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:08:40,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (1/1) ... [2024-12-02 13:08:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:08:40,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:08:40,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:08:40,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:08:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:08:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 13:08:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:08:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:08:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:08:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:08:40,549 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:08:40,551 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:08:42,148 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-02 13:08:42,149 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:08:42,158 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:08:42,158 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:08:42,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:42 BoogieIcfgContainer [2024-12-02 13:08:42,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:08:42,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:08:42,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:08:42,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:08:42,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:08:40" (1/3) ... [2024-12-02 13:08:42,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a836213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:42, skipping insertion in model container [2024-12-02 13:08:42,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:08:40" (2/3) ... [2024-12-02 13:08:42,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a836213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:08:42, skipping insertion in model container [2024-12-02 13:08:42,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:08:42" (3/3) ... [2024-12-02 13:08:42,167 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i [2024-12-02 13:08:42,178 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:08:42,179 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-45.i that has 2 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:08:42,220 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:08:42,230 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;@142f541c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:08:42,230 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:08:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 13:08:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:08:42,242 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:42,243 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:42,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:42,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1106573422, now seen corresponding path program 1 times [2024-12-02 13:08:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799453377] [2024-12-02 13:08:42,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:42,256 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 13:08:42,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:42,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:42,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:42,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:08:42,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2024-12-02 13:08:42,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:42,627 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799453377] [2024-12-02 13:08:42,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799453377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:42,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:42,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:08:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665283900] [2024-12-02 13:08:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:42,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:08:42,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:42,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:08:42,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:08:42,649 INFO L87 Difference]: Start difference. First operand has 85 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 57 states have internal predecessors, (80), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 13:08:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:42,674 INFO L93 Difference]: Finished difference Result 163 states and 284 transitions. [2024-12-02 13:08:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:08:42,676 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 173 [2024-12-02 13:08:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:42,681 INFO L225 Difference]: With dead ends: 163 [2024-12-02 13:08:42,681 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 13:08:42,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 172 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 13:08:42,686 INFO L435 NwaCegarLoop]: 124 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, 124 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 13:08:42,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:08:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 13:08:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-12-02 13:08:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 13:08:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 124 transitions. [2024-12-02 13:08:42,722 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 124 transitions. Word has length 173 [2024-12-02 13:08:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:42,723 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 124 transitions. [2024-12-02 13:08:42,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 13:08:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 124 transitions. [2024-12-02 13:08:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:08:42,726 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:42,726 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:42,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:42,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:42,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:42,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1916054174, now seen corresponding path program 1 times [2024-12-02 13:08:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:42,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468608247] [2024-12-02 13:08:42,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:42,929 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 13:08:42,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:42,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:42,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:43,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:08:43,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-12-02 13:08:44,410 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:44,714 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468608247] [2024-12-02 13:08:44,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468608247] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:44,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2133680984] [2024-12-02 13:08:44,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:44,715 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:44,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 13:08:44,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 13:08:44,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-12-02 13:08:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:45,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:08:45,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:08:45,272 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:45,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2133680984] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:45,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:45,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 13:08:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167429327] [2024-12-02 13:08:45,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:45,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:08:45,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:45,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:08:45,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:08:45,275 INFO L87 Difference]: Start difference. First operand 81 states and 124 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:45,355 INFO L93 Difference]: Finished difference Result 188 states and 289 transitions. [2024-12-02 13:08:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:08:45,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-12-02 13:08:45,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:45,361 INFO L225 Difference]: With dead ends: 188 [2024-12-02 13:08:45,361 INFO L226 Difference]: Without dead ends: 110 [2024-12-02 13:08:45,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:08:45,363 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 37 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:45,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 235 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:08:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-12-02 13:08:45,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 90. [2024-12-02 13:08:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 13:08:45,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 139 transitions. [2024-12-02 13:08:45,375 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 139 transitions. Word has length 173 [2024-12-02 13:08:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:45,377 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 139 transitions. [2024-12-02 13:08:45,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 139 transitions. [2024-12-02 13:08:45,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:08:45,380 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:45,380 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:45,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:45,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-12-02 13:08:45,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:45,781 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:45,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1792107108, now seen corresponding path program 1 times [2024-12-02 13:08:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778892746] [2024-12-02 13:08:45,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:45,783 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 13:08:45,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:45,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:45,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:46,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:08:46,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-12-02 13:08:46,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:47,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:47,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778892746] [2024-12-02 13:08:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778892746] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:47,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1727540468] [2024-12-02 13:08:47,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:47,194 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 13:08:47,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 13:08:47,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-12-02 13:08:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:47,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:08:47,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:08:47,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:47,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1727540468] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:47,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:47,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 13:08:47,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297297338] [2024-12-02 13:08:47,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:47,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:08:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:47,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:08:47,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:08:47,740 INFO L87 Difference]: Start difference. First operand 90 states and 139 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:47,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:47,809 INFO L93 Difference]: Finished difference Result 261 states and 405 transitions. [2024-12-02 13:08:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:08:47,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-12-02 13:08:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:47,817 INFO L225 Difference]: With dead ends: 261 [2024-12-02 13:08:47,817 INFO L226 Difference]: Without dead ends: 174 [2024-12-02 13:08:47,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:08:47,819 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 113 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:47,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 228 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:08:47,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-12-02 13:08:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-12-02 13:08:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.376068376068376) internal successors, (161), 117 states have internal predecessors, (161), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-12-02 13:08:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 265 transitions. [2024-12-02 13:08:47,842 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 265 transitions. Word has length 173 [2024-12-02 13:08:47,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:47,843 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 265 transitions. [2024-12-02 13:08:47,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 265 transitions. [2024-12-02 13:08:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 13:08:47,846 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:47,846 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:47,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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)] Ended with exit code 0 [2024-12-02 13:08:48,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-12-02 13:08:48,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:48,247 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:48,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -684742561, now seen corresponding path program 1 times [2024-12-02 13:08:48,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:48,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158918612] [2024-12-02 13:08:48,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:48,248 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 13:08:48,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:48,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:48,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:48,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:08:48,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-12-02 13:08:49,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:49,466 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:49,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158918612] [2024-12-02 13:08:49,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158918612] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:49,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [884131785] [2024-12-02 13:08:49,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:49,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:49,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 13:08:49,468 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 13:08:49,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-02 13:08:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:50,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:08:50,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:08:50,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:50,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [884131785] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:50,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:50,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-12-02 13:08:50,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306166725] [2024-12-02 13:08:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:50,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:08:50,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:50,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:08:50,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:08:50,514 INFO L87 Difference]: Start difference. First operand 172 states and 265 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:51,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:51,834 INFO L93 Difference]: Finished difference Result 500 states and 773 transitions. [2024-12-02 13:08:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:08:51,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-12-02 13:08:51,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:51,838 INFO L225 Difference]: With dead ends: 500 [2024-12-02 13:08:51,838 INFO L226 Difference]: Without dead ends: 331 [2024-12-02 13:08:51,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:08:51,839 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 106 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:51,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 557 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 13:08:51,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-12-02 13:08:51,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 186. [2024-12-02 13:08:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 131 states have internal predecessors, (180), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-12-02 13:08:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 284 transitions. [2024-12-02 13:08:51,869 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 284 transitions. Word has length 174 [2024-12-02 13:08:51,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:51,870 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 284 transitions. [2024-12-02 13:08:51,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:51,870 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 284 transitions. [2024-12-02 13:08:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:08:51,873 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:51,873 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:51,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-12-02 13:08:52,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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)] Ended with exit code 0 [2024-12-02 13:08:52,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:52,274 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:52,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2060853403, now seen corresponding path program 1 times [2024-12-02 13:08:52,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:52,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964139075] [2024-12-02 13:08:52,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:52,275 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 13:08:52,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:52,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:52,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (9)] Waiting until timeout for monitored process [2024-12-02 13:08:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:52,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:08:52,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-12-02 13:08:53,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:53,389 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964139075] [2024-12-02 13:08:53,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964139075] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [741894312] [2024-12-02 13:08:53,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:53,389 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:53,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 13:08:53,391 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 13:08:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-12-02 13:08:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:53,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:08:53,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:08:53,953 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:53,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [741894312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:53,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:08:53,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-12-02 13:08:53,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710493746] [2024-12-02 13:08:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:53,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:08:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:53,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:08:53,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:08:53,955 INFO L87 Difference]: Start difference. First operand 186 states and 284 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:54,199 INFO L93 Difference]: Finished difference Result 673 states and 1018 transitions. [2024-12-02 13:08:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:08:54,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 13:08:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:54,206 INFO L225 Difference]: With dead ends: 673 [2024-12-02 13:08:54,206 INFO L226 Difference]: Without dead ends: 490 [2024-12-02 13:08:54,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:08:54,207 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 275 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:54,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 433 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:08:54,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2024-12-02 13:08:54,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 317. [2024-12-02 13:08:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 232 states have (on average 1.396551724137931) internal successors, (324), 234 states have internal predecessors, (324), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 13:08:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 484 transitions. [2024-12-02 13:08:54,257 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 484 transitions. Word has length 175 [2024-12-02 13:08:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:54,257 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 484 transitions. [2024-12-02 13:08:54,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 484 transitions. [2024-12-02 13:08:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:08:54,260 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:54,260 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:54,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-12-02 13:08:54,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (9)] Ended with exit code 0 [2024-12-02 13:08:54,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:54,660 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:54,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash 140095285, now seen corresponding path program 1 times [2024-12-02 13:08:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617696247] [2024-12-02 13:08:54,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:54,662 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 13:08:54,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:54,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:54,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (11)] Waiting until timeout for monitored process [2024-12-02 13:08:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:54,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:08:54,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-12-02 13:08:55,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:55,718 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617696247] [2024-12-02 13:08:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617696247] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1625778128] [2024-12-02 13:08:55,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:55,719 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:55,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 13:08:55,720 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 13:08:55,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-12-02 13:08:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:56,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:08:56,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 673 proven. 39 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-12-02 13:08:57,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:08:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1625778128] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:08:57,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:08:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-12-02 13:08:57,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250570052] [2024-12-02 13:08:57,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:08:57,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 13:08:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:57,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 13:08:57,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:08:57,403 INFO L87 Difference]: Start difference. First operand 317 states and 484 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 13:08:58,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:58,508 INFO L93 Difference]: Finished difference Result 724 states and 1108 transitions. [2024-12-02 13:08:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:08:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 175 [2024-12-02 13:08:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:58,515 INFO L225 Difference]: With dead ends: 724 [2024-12-02 13:08:58,515 INFO L226 Difference]: Without dead ends: 410 [2024-12-02 13:08:58,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:08:58,519 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 36 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:58,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 371 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:08:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-12-02 13:08:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 386. [2024-12-02 13:08:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 272 states have (on average 1.3566176470588236) internal successors, (369), 274 states have internal predecessors, (369), 106 states have call successors, (106), 7 states have call predecessors, (106), 7 states have return successors, (106), 104 states have call predecessors, (106), 106 states have call successors, (106) [2024-12-02 13:08:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 581 transitions. [2024-12-02 13:08:58,555 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 581 transitions. Word has length 175 [2024-12-02 13:08:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:58,555 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 581 transitions. [2024-12-02 13:08:58,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 13:08:58,555 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 581 transitions. [2024-12-02 13:08:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:08:58,558 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:58,558 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:58,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (11)] Ended with exit code 0 [2024-12-02 13:08:58,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-12-02 13:08:58,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 13:08:58,959 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:58,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 562797111, now seen corresponding path program 1 times [2024-12-02 13:08:58,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:58,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732470503] [2024-12-02 13:08:58,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:58,960 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 13:08:58,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:58,961 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:58,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (13)] Waiting until timeout for monitored process [2024-12-02 13:08:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:59,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:08:59,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:08:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 13:08:59,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:08:59,214 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:08:59,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732470503] [2024-12-02 13:08:59,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732470503] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:59,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:59,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:08:59,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026633604] [2024-12-02 13:08:59,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:59,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:08:59,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:08:59,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:08:59,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:08:59,215 INFO L87 Difference]: Start difference. First operand 386 states and 581 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:59,282 INFO L93 Difference]: Finished difference Result 700 states and 1062 transitions. [2024-12-02 13:08:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:08:59,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-12-02 13:08:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:59,291 INFO L225 Difference]: With dead ends: 700 [2024-12-02 13:08:59,291 INFO L226 Difference]: Without dead ends: 386 [2024-12-02 13:08:59,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 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 13:08:59,292 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 1 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:59,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 238 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:08:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-12-02 13:08:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 358. [2024-12-02 13:08:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 244 states have (on average 1.348360655737705) internal successors, (329), 246 states have internal predecessors, (329), 106 states have call successors, (106), 7 states have call predecessors, (106), 7 states have return successors, (106), 104 states have call predecessors, (106), 106 states have call successors, (106) [2024-12-02 13:08:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 541 transitions. [2024-12-02 13:08:59,334 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 541 transitions. Word has length 175 [2024-12-02 13:08:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:59,334 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 541 transitions. [2024-12-02 13:08:59,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 13:08:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 541 transitions. [2024-12-02 13:08:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:08:59,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:59,336 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:08:59,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (13)] Forceful destruction successful, exit code 0 [2024-12-02 13:08:59,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:59,536 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:59,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 434035197, now seen corresponding path program 1 times [2024-12-02 13:08:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:08:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936268712] [2024-12-02 13:08:59,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:59,537 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 13:08:59,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:08:59,539 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 13:08:59,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd5926c7-7cfc-40b2-b6ef-1295625dce0d/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 (14)] Waiting until timeout for monitored process [2024-12-02 13:08:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:59,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 13:08:59,860 INFO L279 TraceCheckSpWp]: Computing forward predicates...