./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-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_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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_acfb6377-9a1b-4344-adde-294a8038a2ed/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 bbb30f5a716e95823cb1372888b0a3f5fc4a46205d14c7acf98f1ada42093098 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:56:50,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:56:50,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:56:50,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:56:50,388 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:56:50,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:56:50,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:56:50,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:56:50,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:56:50,409 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:56:50,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:56:50,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:56:50,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:56:50,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:56:50,410 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:56:50,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:56:50,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:56:50,410 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:56:50,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:56:50,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:56:50,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:56:50,411 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:56:50,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:56:50,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:56:50,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:56:50,413 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:56:50,414 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_acfb6377-9a1b-4344-adde-294a8038a2ed/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 -> bbb30f5a716e95823cb1372888b0a3f5fc4a46205d14c7acf98f1ada42093098 [2024-12-02 12:56:50,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:56:50,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:56:50,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:56:50,665 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:56:50,666 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:56:50,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2024-12-02 12:56:53,284 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/fdca43744/430bafc12bf746629eb7481ce36aa83d/FLAG46f027936 [2024-12-02 12:56:53,490 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:56:53,491 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2024-12-02 12:56:53,499 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/fdca43744/430bafc12bf746629eb7481ce36aa83d/FLAG46f027936 [2024-12-02 12:56:53,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/fdca43744/430bafc12bf746629eb7481ce36aa83d [2024-12-02 12:56:53,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:56:53,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:56:53,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:56:53,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:56:53,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:56:53,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f43a2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53, skipping insertion in model container [2024-12-02 12:56:53,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:56:53,672 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_acfb6377-9a1b-4344-adde-294a8038a2ed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i[919,932] [2024-12-02 12:56:53,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:56:53,742 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:56:53,749 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_acfb6377-9a1b-4344-adde-294a8038a2ed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i[919,932] [2024-12-02 12:56:53,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:56:53,794 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:56:53,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53 WrapperNode [2024-12-02 12:56:53,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:56:53,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:56:53,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:56:53,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:56:53,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,840 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 191 [2024-12-02 12:56:53,841 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:56:53,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:56:53,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:56:53,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:56:53,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,853 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,868 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 12:56:53,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,876 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:56:53,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:56:53,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:56:53,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:56:53,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (1/1) ... [2024-12-02 12:56:53,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:56:53,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:53,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:56:53,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:56:53,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:56:53,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:56:53,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:56:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:56:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:56:53,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:56:54,020 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:56:54,022 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:56:54,323 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-02 12:56:54,323 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:56:54,333 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:56:54,333 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:56:54,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:56:54 BoogieIcfgContainer [2024-12-02 12:56:54,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:56:54,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:56:54,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:56:54,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:56:54,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:56:53" (1/3) ... [2024-12-02 12:56:54,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5db546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:56:54, skipping insertion in model container [2024-12-02 12:56:54,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:56:53" (2/3) ... [2024-12-02 12:56:54,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5db546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:56:54, skipping insertion in model container [2024-12-02 12:56:54,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:56:54" (3/3) ... [2024-12-02 12:56:54,341 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2024-12-02 12:56:54,351 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:56:54,352 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i that has 2 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:56:54,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:56:54,402 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;@265f4816, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:56:54,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:56:54,405 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 12:56:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 12:56:54,416 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:54,416 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 12:56:54,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:54,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1261122866, now seen corresponding path program 1 times [2024-12-02 12:56:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751473283] [2024-12-02 12:56:54,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:54,708 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 12:56:54,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751473283] [2024-12-02 12:56:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751473283] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:56:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132134424] [2024-12-02 12:56:54,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:54,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:56:54,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:56:54,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:56:54,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:56:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:54,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:56:54,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:56:54,912 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 12:56:54,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:56:54,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132134424] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:54,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:56:54,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:56:54,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402700098] [2024-12-02 12:56:54,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:54,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:56:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:54,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:56:54,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:56:54,934 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 12:56:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:54,957 INFO L93 Difference]: Finished difference Result 163 states and 284 transitions. [2024-12-02 12:56:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:56:54,958 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 12:56:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:54,963 INFO L225 Difference]: With dead ends: 163 [2024-12-02 12:56:54,963 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 12:56:54,967 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 12:56:54,969 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 12:56:54,970 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 12:56:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 12:56:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-12-02 12:56:54,998 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 12:56:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 124 transitions. [2024-12-02 12:56:55,003 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 124 transitions. Word has length 173 [2024-12-02 12:56:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:55,004 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 124 transitions. [2024-12-02 12:56:55,004 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 12:56:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 124 transitions. [2024-12-02 12:56:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 12:56:55,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:55,007 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 12:56:55,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:56:55,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:56:55,208 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:55,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash 11216834, now seen corresponding path program 1 times [2024-12-02 12:56:55,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:55,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034079427] [2024-12-02 12:56:55,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:55,429 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 12:56:55,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:55,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034079427] [2024-12-02 12:56:55,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034079427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:55,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:55,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:56:55,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279101334] [2024-12-02 12:56:55,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:55,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:56:55,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:55,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:56:55,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:56:55,431 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 12:56:55,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:55,490 INFO L93 Difference]: Finished difference Result 234 states and 360 transitions. [2024-12-02 12:56:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:56:55,492 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 12:56:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:55,494 INFO L225 Difference]: With dead ends: 234 [2024-12-02 12:56:55,494 INFO L226 Difference]: Without dead ends: 156 [2024-12-02 12:56:55,495 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 12:56:55,496 INFO L435 NwaCegarLoop]: 150 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, 259 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 12:56:55,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 259 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:56:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-12-02 12:56:55,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2024-12-02 12:56:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 99 states have (on average 1.3232323232323233) internal successors, (131), 99 states have internal predecessors, (131), 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 12:56:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 235 transitions. [2024-12-02 12:56:55,527 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 235 transitions. Word has length 173 [2024-12-02 12:56:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:55,528 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 235 transitions. [2024-12-02 12:56:55,528 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 12:56:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 235 transitions. [2024-12-02 12:56:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:56:55,530 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:55,531 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 12:56:55,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:56:55,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:55,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash 457900672, now seen corresponding path program 1 times [2024-12-02 12:56:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:55,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136164611] [2024-12-02 12:56:55,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:56:55,684 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 12:56:55,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:56:55,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136164611] [2024-12-02 12:56:55,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136164611] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:56:55,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:56:55,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:56:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747097412] [2024-12-02 12:56:55,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:56:55,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:56:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:56:55,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:56:55,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:56:55,686 INFO L87 Difference]: Start difference. First operand 154 states and 235 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 12:56:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:56:55,729 INFO L93 Difference]: Finished difference Result 353 states and 538 transitions. [2024-12-02 12:56:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:56:55,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 12:56:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:56:55,733 INFO L225 Difference]: With dead ends: 353 [2024-12-02 12:56:55,733 INFO L226 Difference]: Without dead ends: 202 [2024-12-02 12:56:55,734 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 12:56:55,735 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 33 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:56:55,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 254 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:56:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-12-02 12:56:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 174. [2024-12-02 12:56:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 119 states have (on average 1.3529411764705883) internal successors, (161), 119 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 12:56:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 265 transitions. [2024-12-02 12:56:55,756 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 265 transitions. Word has length 174 [2024-12-02 12:56:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:56:55,756 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 265 transitions. [2024-12-02 12:56:55,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 12:56:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 265 transitions. [2024-12-02 12:56:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:56:55,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:56:55,759 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 12:56:55,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:56:55,760 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:56:55,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:56:55,760 INFO L85 PathProgramCache]: Analyzing trace with hash -966104394, now seen corresponding path program 1 times [2024-12-02 12:56:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:56:55,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665122179] [2024-12-02 12:56:55,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:56:55,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:56:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:06,102 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 12:57:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665122179] [2024-12-02 12:57:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665122179] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:57:06,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530404234] [2024-12-02 12:57:06,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:06,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:57:06,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:06,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:57:06,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:57:06,103 INFO L87 Difference]: Start difference. First operand 174 states and 265 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:57:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:08,702 INFO L93 Difference]: Finished difference Result 463 states and 698 transitions. [2024-12-02 12:57:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:57:08,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2024-12-02 12:57:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:08,706 INFO L225 Difference]: With dead ends: 463 [2024-12-02 12:57:08,706 INFO L226 Difference]: Without dead ends: 292 [2024-12-02 12:57:08,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:57:08,708 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 253 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:08,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 305 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 12:57:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-12-02 12:57:08,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2024-12-02 12:57:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 186 states have (on average 1.3763440860215055) internal successors, (256), 188 states have internal predecessors, (256), 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 12:57:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 392 transitions. [2024-12-02 12:57:08,765 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 392 transitions. Word has length 174 [2024-12-02 12:57:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:08,766 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 392 transitions. [2024-12-02 12:57:08,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:57:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 392 transitions. [2024-12-02 12:57:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:57:08,769 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:08,769 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 12:57:08,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:57:08,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:08,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -286046024, now seen corresponding path program 1 times [2024-12-02 12:57:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258712572] [2024-12-02 12:57:08,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:08,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:22,440 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 12:57:22,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:22,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258712572] [2024-12-02 12:57:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258712572] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:57:22,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151400868] [2024-12-02 12:57:22,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:22,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:57:22,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:22,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:57:22,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:22,442 INFO L87 Difference]: Start difference. First operand 259 states and 392 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 12:57:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:23,331 INFO L93 Difference]: Finished difference Result 706 states and 1062 transitions. [2024-12-02 12:57:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:57:23,332 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 12:57:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:23,336 INFO L225 Difference]: With dead ends: 706 [2024-12-02 12:57:23,336 INFO L226 Difference]: Without dead ends: 450 [2024-12-02 12:57:23,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:23,338 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 132 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:23,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 472 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 12:57:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-12-02 12:57:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 306. [2024-12-02 12:57:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 233 states have (on average 1.3948497854077253) internal successors, (325), 235 states have internal predecessors, (325), 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 12:57:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 461 transitions. [2024-12-02 12:57:23,394 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 461 transitions. Word has length 174 [2024-12-02 12:57:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:23,394 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 461 transitions. [2024-12-02 12:57:23,395 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 12:57:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 461 transitions. [2024-12-02 12:57:23,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:57:23,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:23,397 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 12:57:23,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:57:23,397 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:23,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1987172748, now seen corresponding path program 1 times [2024-12-02 12:57:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957925148] [2024-12-02 12:57:23,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:24,561 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 12:57:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:24,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957925148] [2024-12-02 12:57:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957925148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:24,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:57:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002849007] [2024-12-02 12:57:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:24,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:57:24,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:24,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:57:24,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:57:24,563 INFO L87 Difference]: Start difference. First operand 306 states and 461 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:57:25,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:25,536 INFO L93 Difference]: Finished difference Result 771 states and 1153 transitions. [2024-12-02 12:57:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:57:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2024-12-02 12:57:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:25,540 INFO L225 Difference]: With dead ends: 771 [2024-12-02 12:57:25,540 INFO L226 Difference]: Without dead ends: 468 [2024-12-02 12:57:25,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:57:25,542 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 243 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:25,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 319 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:57:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-12-02 12:57:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 239. [2024-12-02 12:57:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 174 states have (on average 1.367816091954023) internal successors, (238), 175 states have internal predecessors, (238), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 12:57:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 358 transitions. [2024-12-02 12:57:25,608 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 358 transitions. Word has length 174 [2024-12-02 12:57:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:25,608 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 358 transitions. [2024-12-02 12:57:25,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:57:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 358 transitions. [2024-12-02 12:57:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:57:25,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:25,610 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 12:57:25,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:57:25,610 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:25,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1307114378, now seen corresponding path program 1 times [2024-12-02 12:57:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982570619] [2024-12-02 12:57:25,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:27,836 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 12:57:27,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:27,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982570619] [2024-12-02 12:57:27,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982570619] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:27,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:27,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:57:27,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276304263] [2024-12-02 12:57:27,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:27,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:57:27,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:27,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:57:27,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:27,838 INFO L87 Difference]: Start difference. First operand 239 states and 358 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 12:57:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:28,462 INFO L93 Difference]: Finished difference Result 616 states and 916 transitions. [2024-12-02 12:57:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:57:28,462 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 12:57:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:28,465 INFO L225 Difference]: With dead ends: 616 [2024-12-02 12:57:28,465 INFO L226 Difference]: Without dead ends: 393 [2024-12-02 12:57:28,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:28,467 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 131 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:28,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 450 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:57:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-12-02 12:57:28,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 239. [2024-12-02 12:57:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 174 states have (on average 1.367816091954023) internal successors, (238), 175 states have internal predecessors, (238), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 12:57:28,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 358 transitions. [2024-12-02 12:57:28,510 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 358 transitions. Word has length 174 [2024-12-02 12:57:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:28,510 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 358 transitions. [2024-12-02 12:57:28,510 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 12:57:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 358 transitions. [2024-12-02 12:57:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:57:28,511 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:28,511 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 12:57:28,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:57:28,511 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:28,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2091484358, now seen corresponding path program 1 times [2024-12-02 12:57:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760891916] [2024-12-02 12:57:28,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:37,800 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 12:57:37,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760891916] [2024-12-02 12:57:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760891916] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:57:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496508502] [2024-12-02 12:57:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:37,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:57:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:37,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:57:37,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:37,802 INFO L87 Difference]: Start difference. First operand 239 states and 358 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 12:57:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:38,584 INFO L93 Difference]: Finished difference Result 630 states and 932 transitions. [2024-12-02 12:57:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:57:38,585 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 12:57:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:38,587 INFO L225 Difference]: With dead ends: 630 [2024-12-02 12:57:38,587 INFO L226 Difference]: Without dead ends: 407 [2024-12-02 12:57:38,588 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 12:57:38,588 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 146 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:38,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 365 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:57:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-12-02 12:57:38,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 331. [2024-12-02 12:57:38,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 242 states have (on average 1.3553719008264462) internal successors, (328), 245 states have internal predecessors, (328), 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 12:57:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 488 transitions. [2024-12-02 12:57:38,687 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 488 transitions. Word has length 174 [2024-12-02 12:57:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:38,688 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 488 transitions. [2024-12-02 12:57:38,688 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 12:57:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 488 transitions. [2024-12-02 12:57:38,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 12:57:38,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:38,689 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 12:57:38,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:57:38,690 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:38,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:38,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1182414584, now seen corresponding path program 1 times [2024-12-02 12:57:38,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:38,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100095337] [2024-12-02 12:57:38,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:38,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:39,759 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 12:57:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:39,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100095337] [2024-12-02 12:57:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100095337] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:39,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:39,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:57:39,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122168327] [2024-12-02 12:57:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:39,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:57:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:39,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:57:39,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:57:39,760 INFO L87 Difference]: Start difference. First operand 331 states and 488 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 12:57:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:40,210 INFO L93 Difference]: Finished difference Result 715 states and 1049 transitions. [2024-12-02 12:57:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:57:40,211 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 12:57:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:40,214 INFO L225 Difference]: With dead ends: 715 [2024-12-02 12:57:40,214 INFO L226 Difference]: Without dead ends: 400 [2024-12-02 12:57:40,214 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 12:57:40,215 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 154 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:40,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 361 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:57:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-12-02 12:57:40,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 314. [2024-12-02 12:57:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 225 states have (on average 1.3466666666666667) internal successors, (303), 228 states have internal predecessors, (303), 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 12:57:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 463 transitions. [2024-12-02 12:57:40,342 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 463 transitions. Word has length 174 [2024-12-02 12:57:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:40,342 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 463 transitions. [2024-12-02 12:57:40,342 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 12:57:40,342 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 463 transitions. [2024-12-02 12:57:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:57:40,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:40,344 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 12:57:40,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:57:40,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:40,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash 404949288, now seen corresponding path program 1 times [2024-12-02 12:57:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954164264] [2024-12-02 12:57:40,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:40,634 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 12:57:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954164264] [2024-12-02 12:57:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954164264] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:40,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:40,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:57:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717829474] [2024-12-02 12:57:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:40,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:57:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:40,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:57:40,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:57:40,635 INFO L87 Difference]: Start difference. First operand 314 states and 463 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 12:57:40,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:40,886 INFO L93 Difference]: Finished difference Result 758 states and 1093 transitions. [2024-12-02 12:57:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:57:40,887 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 12:57:40,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:40,890 INFO L225 Difference]: With dead ends: 758 [2024-12-02 12:57:40,890 INFO L226 Difference]: Without dead ends: 460 [2024-12-02 12:57:40,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:57:40,892 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 77 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:40,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 343 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:57:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-12-02 12:57:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 422. [2024-12-02 12:57:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 320 states have (on average 1.3375) internal successors, (428), 327 states have internal predecessors, (428), 88 states have call successors, (88), 13 states have call predecessors, (88), 13 states have return successors, (88), 81 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 12:57:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 604 transitions. [2024-12-02 12:57:41,037 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 604 transitions. Word has length 175 [2024-12-02 12:57:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:41,038 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 604 transitions. [2024-12-02 12:57:41,038 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 12:57:41,038 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 604 transitions. [2024-12-02 12:57:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 12:57:41,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:41,040 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 12:57:41,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:57:41,040 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:41,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash -181856726, now seen corresponding path program 1 times [2024-12-02 12:57:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224573366] [2024-12-02 12:57:41,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:02:51,117 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 13:02:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:02:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224573366] [2024-12-02 13:02:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224573366] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:02:51,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:02:51,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 13:02:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141987271] [2024-12-02 13:02:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:02:51,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:02:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:02:51,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:02:51,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:02:51,118 INFO L87 Difference]: Start difference. First operand 422 states and 604 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 13:02:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:02:57,702 INFO L93 Difference]: Finished difference Result 1026 states and 1436 transitions. [2024-12-02 13:02:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 13:02:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 13:02:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:02:57,705 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 13:02:57,705 INFO L226 Difference]: Without dead ends: 624 [2024-12-02 13:02:57,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:02:57,706 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 271 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:02:57,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 616 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 13:02:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-12-02 13:02:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 480. [2024-12-02 13:02:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 374 states have (on average 1.320855614973262) internal successors, (494), 381 states have internal predecessors, (494), 88 states have call successors, (88), 17 states have call predecessors, (88), 17 states have return successors, (88), 81 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:02:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 670 transitions. [2024-12-02 13:02:57,891 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 670 transitions. Word has length 175 [2024-12-02 13:02:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:02:57,892 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 670 transitions. [2024-12-02 13:02:57,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 13:02:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 670 transitions. [2024-12-02 13:02:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:02:57,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:02:57,894 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 13:02:57,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:02:57,894 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:02:57,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:02:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1202925080, now seen corresponding path program 1 times [2024-12-02 13:02:57,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:02:57,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080962265] [2024-12-02 13:02:57,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:02:57,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:02:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:04:33,762 WARN L286 SmtUtils]: Spent 10.92s on a formula simplification. DAG size of input: 284 DAG size of output: 224 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:06:06,109 WARN L286 SmtUtils]: Spent 10.13s on a formula simplification. DAG size of input: 286 DAG size of output: 226 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:08:43,960 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 13:08:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:43,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080962265] [2024-12-02 13:08:43,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080962265] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:43,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:43,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 13:08:43,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942512007] [2024-12-02 13:08:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:43,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:08:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:43,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:08:43,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:08:43,961 INFO L87 Difference]: Start difference. First operand 480 states and 670 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 13:08:52,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:08:52,831 INFO L93 Difference]: Finished difference Result 557 states and 763 transitions. [2024-12-02 13:08:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 13:08:52,831 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 13:08:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:08:52,834 INFO L225 Difference]: With dead ends: 557 [2024-12-02 13:08:52,834 INFO L226 Difference]: Without dead ends: 555 [2024-12-02 13:08:52,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:08:52,835 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 241 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:08:52,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 720 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 13:08:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-12-02 13:08:52,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 478. [2024-12-02 13:08:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 372 states have (on average 1.3225806451612903) internal successors, (492), 379 states have internal predecessors, (492), 88 states have call successors, (88), 17 states have call predecessors, (88), 17 states have return successors, (88), 81 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 13:08:52,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 668 transitions. [2024-12-02 13:08:52,946 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 668 transitions. Word has length 175 [2024-12-02 13:08:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:08:52,947 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 668 transitions. [2024-12-02 13:08:52,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 13:08:52,947 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 668 transitions. [2024-12-02 13:08:52,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:08:52,948 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:08:52,948 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 13:08:52,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:08:52,948 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:08:52,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:08:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash 724678459, now seen corresponding path program 1 times [2024-12-02 13:08:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:08:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92422217] [2024-12-02 13:08:52,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:08:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:08:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:15,987 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:15,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 13:09:15,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:09:15,988 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_acfb6377-9a1b-4344-adde-294a8038a2ed/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:140) 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 13:09:15,992 INFO L158 Benchmark]: Toolchain (without parser) took 742475.63ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 116.7MB in the beginning and 623.8MB in the end (delta: -507.0MB). Peak memory consumption was 791.0MB. Max. memory is 16.1GB. [2024-12-02 13:09:15,993 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:09:15,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.37ms. Allocated memory is still 142.6MB. Free memory was 116.7MB in the beginning and 101.3MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:09:15,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.64ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 98.2MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:09:15,993 INFO L158 Benchmark]: Boogie Preprocessor took 46.70ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 93.7MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 13:09:15,993 INFO L158 Benchmark]: RCFGBuilder took 444.98ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 70.5MB in the end (delta: 23.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:09:15,994 INFO L158 Benchmark]: TraceAbstraction took 741656.64ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 69.9MB in the beginning and 623.8MB in the end (delta: -553.8MB). Peak memory consumption was 740.7MB. Max. memory is 16.1GB. [2024-12-02 13:09:15,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 142.6MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.37ms. Allocated memory is still 142.6MB. Free memory was 116.7MB in the beginning and 101.3MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.64ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 98.2MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.70ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 93.7MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 444.98ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 70.5MB in the end (delta: 23.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 741656.64ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 69.9MB in the beginning and 623.8MB in the end (delta: -553.8MB). Peak memory consumption was 740.7MB. 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_acfb6377-9a1b-4344-adde-294a8038a2ed/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_acfb6377-9a1b-4344-adde-294a8038a2ed/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_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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_acfb6377-9a1b-4344-adde-294a8038a2ed/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 bbb30f5a716e95823cb1372888b0a3f5fc4a46205d14c7acf98f1ada42093098 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:09:17,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:09:17,869 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 13:09:17,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:09:17,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:09:17,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:09:17,898 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:09:17,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:09:17,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:09:17,899 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:09:17,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:09:17,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:09:17,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:09:17,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:09:17,900 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:09:17,901 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:09:17,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:09:17,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:09:17,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:09:17,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:09:17,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:09:17,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:09:17,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:09:17,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:09:17,903 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_acfb6377-9a1b-4344-adde-294a8038a2ed/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 -> bbb30f5a716e95823cb1372888b0a3f5fc4a46205d14c7acf98f1ada42093098 [2024-12-02 13:09:18,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:09:18,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:09:18,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:09:18,136 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:09:18,137 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:09:18,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2024-12-02 13:09:20,728 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/25686f553/0271b58424a543af81d84437b45208e9/FLAGbe1d0b371 [2024-12-02 13:09:20,975 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:09:20,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2024-12-02 13:09:20,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/25686f553/0271b58424a543af81d84437b45208e9/FLAGbe1d0b371 [2024-12-02 13:09:21,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/data/25686f553/0271b58424a543af81d84437b45208e9 [2024-12-02 13:09:21,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:09:21,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:09:21,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:09:21,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:09:21,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:09:21,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3a643c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21, skipping insertion in model container [2024-12-02 13:09:21,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,339 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:09:21,465 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_acfb6377-9a1b-4344-adde-294a8038a2ed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i[919,932] [2024-12-02 13:09:21,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:09:21,530 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:09:21,540 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_acfb6377-9a1b-4344-adde-294a8038a2ed/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i[919,932] [2024-12-02 13:09:21,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:09:21,589 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:09:21,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21 WrapperNode [2024-12-02 13:09:21,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:09:21,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:09:21,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:09:21,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:09:21,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,632 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186 [2024-12-02 13:09:21,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:09:21,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:09:21,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:09:21,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:09:21,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,646 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,659 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 13:09:21,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,670 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:09:21,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:09:21,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:09:21,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:09:21,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (1/1) ... [2024-12-02 13:09:21,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:09:21,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:09:21,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:09:21,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:09:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:09:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 13:09:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:09:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:09:21,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:09:21,802 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:09:21,803 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:09:23,551 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-12-02 13:09:23,551 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:09:23,559 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:09:23,560 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:09:23,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:23 BoogieIcfgContainer [2024-12-02 13:09:23,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:09:23,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:09:23,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:09:23,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:09:23,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:09:21" (1/3) ... [2024-12-02 13:09:23,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191e7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:23, skipping insertion in model container [2024-12-02 13:09:23,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:21" (2/3) ... [2024-12-02 13:09:23,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191e7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:23, skipping insertion in model container [2024-12-02 13:09:23,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:23" (3/3) ... [2024-12-02 13:09:23,571 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i [2024-12-02 13:09:23,587 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:09:23,589 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-45.i that has 2 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:09:23,636 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:09:23,646 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;@5ac675d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:09:23,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:09:23,649 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 13:09:23,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:09:23,660 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:23,661 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 13:09:23,661 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:23,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1261122866, now seen corresponding path program 1 times [2024-12-02 13:09:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:09:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619648852] [2024-12-02 13:09:23,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:23,674 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 13:09:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:09:23,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:23,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:24,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:09:24,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:24,053 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 13:09:24,053 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:09:24,054 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:09:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619648852] [2024-12-02 13:09:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619648852] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:24,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:24,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:09:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160561252] [2024-12-02 13:09:24,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:24,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:09:24,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:09:24,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:09:24,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:09:24,077 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 13:09:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:24,103 INFO L93 Difference]: Finished difference Result 163 states and 284 transitions. [2024-12-02 13:09:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:09:24,105 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 13:09:24,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:24,110 INFO L225 Difference]: With dead ends: 163 [2024-12-02 13:09:24,110 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 13:09:24,114 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 13:09:24,116 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 13:09:24,117 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 13:09:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 13:09:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-12-02 13:09:24,146 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 13:09:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 124 transitions. [2024-12-02 13:09:24,152 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 124 transitions. Word has length 173 [2024-12-02 13:09:24,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:24,153 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 124 transitions. [2024-12-02 13:09:24,153 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 13:09:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 124 transitions. [2024-12-02 13:09:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:09:24,157 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:24,157 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 13:09:24,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:24,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:24,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:24,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash 11216834, now seen corresponding path program 1 times [2024-12-02 13:09:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:09:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703145497] [2024-12-02 13:09:24,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:24,360 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 13:09:24,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:09:24,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:24,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:24,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 13:09:24,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 669 proven. 33 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-12-02 13:09:25,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:09:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 42 proven. 33 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2024-12-02 13:09:25,411 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:09:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703145497] [2024-12-02 13:09:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703145497] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:09:25,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 13:09:25,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-12-02 13:09:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943854135] [2024-12-02 13:09:25,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 13:09:25,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:09:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:09:25,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:09:25,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:09:25,415 INFO L87 Difference]: Start difference. First operand 81 states and 124 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-12-02 13:09:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:26,060 INFO L93 Difference]: Finished difference Result 164 states and 248 transitions. [2024-12-02 13:09:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:09:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 173 [2024-12-02 13:09:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:26,066 INFO L225 Difference]: With dead ends: 164 [2024-12-02 13:09:26,066 INFO L226 Difference]: Without dead ends: 86 [2024-12-02 13:09:26,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:09:26,068 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 166 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:26,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 194 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:09:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-12-02 13:09:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-12-02 13:09:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 55 states have internal predecessors, (69), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 13:09:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2024-12-02 13:09:26,087 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 173 [2024-12-02 13:09:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:26,088 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2024-12-02 13:09:26,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-12-02 13:09:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2024-12-02 13:09:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 13:09:26,092 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:26,092 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 13:09:26,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:26,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:26,292 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:26,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1184959112, now seen corresponding path program 1 times [2024-12-02 13:09:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:09:26,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56156940] [2024-12-02 13:09:26,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:26,294 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 13:09:26,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:09:26,295 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:26,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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)] Waiting until timeout for monitored process [2024-12-02 13:09:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:26,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:09:26,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:26,637 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 13:09:26,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:09:26,638 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:09:26,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56156940] [2024-12-02 13:09:26,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56156940] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:26,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:26,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:09:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192165504] [2024-12-02 13:09:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:26,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:09:26,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:09:26,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:09:26,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:09:26,640 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 13:09:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:26,702 INFO L93 Difference]: Finished difference Result 165 states and 239 transitions. [2024-12-02 13:09:26,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:09:26,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 13:09:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:26,707 INFO L225 Difference]: With dead ends: 165 [2024-12-02 13:09:26,707 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 13:09:26,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 172 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 13:09:26,709 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:26,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:09:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 13:09:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-12-02 13:09:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 13:09:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2024-12-02 13:09:26,723 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 174 [2024-12-02 13:09:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:26,724 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2024-12-02 13:09:26,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 13:09:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2024-12-02 13:09:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:09:26,727 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:26,727 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 13:09:26,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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)] Ended with exit code 0 [2024-12-02 13:09:26,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:26,927 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:26,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1764850503, now seen corresponding path program 1 times [2024-12-02 13:09:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:09:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883358084] [2024-12-02 13:09:26,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:26,929 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 13:09:26,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:09:26,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:26,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:27,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:09:27,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:09:27,304 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 13:09:27,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:09:27,304 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 13:09:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883358084] [2024-12-02 13:09:27,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883358084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:27,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:27,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:09:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526443030] [2024-12-02 13:09:27,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:27,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:09:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 13:09:27,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:09:27,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:09:27,306 INFO L87 Difference]: Start difference. First operand 84 states and 120 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 13:09:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:27,391 INFO L93 Difference]: Finished difference Result 193 states and 274 transitions. [2024-12-02 13:09:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:09:27,391 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 13:09:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:27,393 INFO L225 Difference]: With dead ends: 193 [2024-12-02 13:09:27,393 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 13:09:27,394 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 13:09:27,394 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 26 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:27,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 241 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:09:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 13:09:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2024-12-02 13:09:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 13:09:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2024-12-02 13:09:27,409 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 175 [2024-12-02 13:09:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:27,410 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2024-12-02 13:09:27,410 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 13:09:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2024-12-02 13:09:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:09:27,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:27,413 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 13:09:27,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:27,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:27,613 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:27,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash 724678459, now seen corresponding path program 1 times [2024-12-02 13:09:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 13:09:27,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676030700] [2024-12-02 13:09:27,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:27,614 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 13:09:27,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 13:09:27,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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 13:09:27,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acfb6377-9a1b-4344-adde-294a8038a2ed/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)] Waiting until timeout for monitored process [2024-12-02 13:09:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:27,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 13:09:27,971 INFO L279 TraceCheckSpWp]: Computing forward predicates...