./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-3.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_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/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_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/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_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/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 a4661a79f995ce83b554327eb89182f2e104b0cd28a9d1560990b967de8c220f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:30:46,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:30:46,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:30:46,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:30:46,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:30:46,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:30:46,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:30:46,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:30:46,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:30:46,375 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:30:46,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:30:46,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:30:46,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:30:46,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:30:46,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:30:46,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:30:46,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:30:46,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:30:46,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:30:46,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:30:46,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:30:46,379 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_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/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 -> a4661a79f995ce83b554327eb89182f2e104b0cd28a9d1560990b967de8c220f [2024-12-02 07:30:46,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:30:46,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:30:46,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:30:46,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:30:46,614 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:30:46,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-3.i [2024-12-02 07:30:49,318 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/data/1ae734e31/9e51a9132f9b40dfb09f835d9d598458/FLAG3471255b0 [2024-12-02 07:30:49,523 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:30:49,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-3.i [2024-12-02 07:30:49,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/data/1ae734e31/9e51a9132f9b40dfb09f835d9d598458/FLAG3471255b0 [2024-12-02 07:30:49,547 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/data/1ae734e31/9e51a9132f9b40dfb09f835d9d598458 [2024-12-02 07:30:49,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:30:49,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:30:49,552 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:30:49,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:30:49,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:30:49,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c92ab41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49, skipping insertion in model container [2024-12-02 07:30:49,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:30:49,687 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_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-3.i[915,928] [2024-12-02 07:30:49,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:30:49,743 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:30:49,752 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_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-3.i[915,928] [2024-12-02 07:30:49,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:30:49,790 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:30:49,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49 WrapperNode [2024-12-02 07:30:49,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:30:49,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:30:49,792 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:30:49,792 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:30:49,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,830 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2024-12-02 07:30:49,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:30:49,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:30:49,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:30:49,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:30:49,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,854 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 07:30:49,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,861 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,865 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,867 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:30:49,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:30:49,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:30:49,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:30:49,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (1/1) ... [2024-12-02 07:30:49,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:30:49,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:30:49,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:30:49,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:30:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:30:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:30:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:30:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:30:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:30:49,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:30:49,984 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:30:49,985 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:30:50,189 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 07:30:50,190 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:30:50,200 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:30:50,200 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:30:50,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:30:50 BoogieIcfgContainer [2024-12-02 07:30:50,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:30:50,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:30:50,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:30:50,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:30:50,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:30:49" (1/3) ... [2024-12-02 07:30:50,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a92fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:30:50, skipping insertion in model container [2024-12-02 07:30:50,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:30:49" (2/3) ... [2024-12-02 07:30:50,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514a92fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:30:50, skipping insertion in model container [2024-12-02 07:30:50,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:30:50" (3/3) ... [2024-12-02 07:30:50,210 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-3.i [2024-12-02 07:30:50,221 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:30:50,222 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-3.i that has 2 procedures, 56 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:30:50,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:30:50,285 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;@7236a736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:30:50,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:30:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 07:30:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:30:50,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:50,300 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:50,300 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:50,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1541050139, now seen corresponding path program 1 times [2024-12-02 07:30:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:50,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316332579] [2024-12-02 07:30:50,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 07:30:50,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:50,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316332579] [2024-12-02 07:30:50,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316332579] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:30:50,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349717643] [2024-12-02 07:30:50,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:50,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:30:50,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:30:50,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:30:50,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:30:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:50,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:30:50,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:30:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 07:30:50,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:30:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349717643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:30:50,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:30:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:30:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442055608] [2024-12-02 07:30:50,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:30:50,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:30:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:50,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:30:50,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:30:50,724 INFO L87 Difference]: Start difference. First operand has 56 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 34 states have internal predecessors, (44), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:30:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:50,746 INFO L93 Difference]: Finished difference Result 105 states and 182 transitions. [2024-12-02 07:30:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:30:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2024-12-02 07:30:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:50,753 INFO L225 Difference]: With dead ends: 105 [2024-12-02 07:30:50,753 INFO L226 Difference]: Without dead ends: 52 [2024-12-02 07:30:50,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 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 07:30:50,759 INFO L435 NwaCegarLoop]: 77 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, 77 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 07:30:50,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:30:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-12-02 07:30:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-12-02 07:30:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 07:30:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2024-12-02 07:30:50,792 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 124 [2024-12-02 07:30:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:50,793 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2024-12-02 07:30:50,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:30:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2024-12-02 07:30:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:30:50,796 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:50,796 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:50,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:30:50,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 07:30:50,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:50,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1582704411, now seen corresponding path program 1 times [2024-12-02 07:30:50,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:50,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508377843] [2024-12-02 07:30:50,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:50,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:30:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508377843] [2024-12-02 07:30:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508377843] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:30:51,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:30:51,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:30:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167802473] [2024-12-02 07:30:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:30:51,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:30:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:51,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:30:51,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:30:51,315 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:51,354 INFO L93 Difference]: Finished difference Result 150 states and 225 transitions. [2024-12-02 07:30:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:30:51,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2024-12-02 07:30:51,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:51,357 INFO L225 Difference]: With dead ends: 150 [2024-12-02 07:30:51,357 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 07:30:51,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:30:51,358 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 36 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:51,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 142 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:30:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 07:30:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2024-12-02 07:30:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 07:30:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 147 transitions. [2024-12-02 07:30:51,382 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 147 transitions. Word has length 124 [2024-12-02 07:30:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:51,383 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 147 transitions. [2024-12-02 07:30:51,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 147 transitions. [2024-12-02 07:30:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:30:51,385 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:51,385 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:51,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:30:51,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:51,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1639962713, now seen corresponding path program 1 times [2024-12-02 07:30:51,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:51,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660518469] [2024-12-02 07:30:51,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 07:30:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660518469] [2024-12-02 07:30:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660518469] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:30:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987107665] [2024-12-02 07:30:51,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:30:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:30:51,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:30:51,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:30:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:51,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 07:30:51,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:30:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 93 proven. 54 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-12-02 07:30:52,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:30:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 07:30:52,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987107665] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:30:52,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:30:52,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-12-02 07:30:52,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415327931] [2024-12-02 07:30:52,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:30:52,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:30:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:52,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:30:52,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:30:52,456 INFO L87 Difference]: Start difference. First operand 98 states and 147 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:30:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:52,671 INFO L93 Difference]: Finished difference Result 209 states and 305 transitions. [2024-12-02 07:30:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:30:52,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 124 [2024-12-02 07:30:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:52,675 INFO L225 Difference]: With dead ends: 209 [2024-12-02 07:30:52,675 INFO L226 Difference]: Without dead ends: 114 [2024-12-02 07:30:52,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:30:52,677 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 35 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:52,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 114 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:30:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-12-02 07:30:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-12-02 07:30:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 61 states have internal predecessors, (71), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 07:30:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 151 transitions. [2024-12-02 07:30:52,702 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 151 transitions. Word has length 124 [2024-12-02 07:30:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:52,703 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 151 transitions. [2024-12-02 07:30:52,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-12-02 07:30:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 151 transitions. [2024-12-02 07:30:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 07:30:52,705 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:52,706 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:52,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:30:52,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:30:52,906 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:52,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1641809755, now seen corresponding path program 1 times [2024-12-02 07:30:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:52,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024219862] [2024-12-02 07:30:52,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:52,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:30:56,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024219862] [2024-12-02 07:30:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024219862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:30:56,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:30:56,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:30:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796593294] [2024-12-02 07:30:56,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:30:56,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:30:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:56,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:30:56,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:30:56,286 INFO L87 Difference]: Start difference. First operand 106 states and 151 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:56,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:56,657 INFO L93 Difference]: Finished difference Result 132 states and 180 transitions. [2024-12-02 07:30:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:30:56,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 124 [2024-12-02 07:30:56,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:56,659 INFO L225 Difference]: With dead ends: 132 [2024-12-02 07:30:56,659 INFO L226 Difference]: Without dead ends: 130 [2024-12-02 07:30:56,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:30:56,661 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 31 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:56,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 372 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:30:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-02 07:30:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2024-12-02 07:30:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 66 states have internal predecessors, (76), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 07:30:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 156 transitions. [2024-12-02 07:30:56,681 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 156 transitions. Word has length 124 [2024-12-02 07:30:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:56,681 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 156 transitions. [2024-12-02 07:30:56,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 156 transitions. [2024-12-02 07:30:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:30:56,684 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:56,684 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:56,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:30:56,684 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:56,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:56,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1190332772, now seen corresponding path program 1 times [2024-12-02 07:30:56,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310430183] [2024-12-02 07:30:56,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:56,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:30:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:57,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310430183] [2024-12-02 07:30:57,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310430183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:30:57,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:30:57,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:30:57,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109132113] [2024-12-02 07:30:57,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:30:57,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:30:57,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:57,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:30:57,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:30:57,605 INFO L87 Difference]: Start difference. First operand 111 states and 156 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:57,906 INFO L93 Difference]: Finished difference Result 254 states and 347 transitions. [2024-12-02 07:30:57,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:30:57,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2024-12-02 07:30:57,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:57,909 INFO L225 Difference]: With dead ends: 254 [2024-12-02 07:30:57,910 INFO L226 Difference]: Without dead ends: 252 [2024-12-02 07:30:57,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:30:57,911 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 68 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:57,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 375 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:30:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-12-02 07:30:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 217. [2024-12-02 07:30:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 128 states have (on average 1.15625) internal successors, (148), 128 states have internal predecessors, (148), 80 states have call successors, (80), 8 states have call predecessors, (80), 8 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-12-02 07:30:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 308 transitions. [2024-12-02 07:30:57,949 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 308 transitions. Word has length 125 [2024-12-02 07:30:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:57,949 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 308 transitions. [2024-12-02 07:30:57,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 308 transitions. [2024-12-02 07:30:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:30:57,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:57,951 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:57,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:30:57,952 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:57,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1247591074, now seen corresponding path program 1 times [2024-12-02 07:30:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:57,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008107939] [2024-12-02 07:30:57,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:57,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:30:58,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:58,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008107939] [2024-12-02 07:30:58,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008107939] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:30:58,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:30:58,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:30:58,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295568470] [2024-12-02 07:30:58,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:30:58,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:30:58,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:58,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:30:58,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:30:58,946 INFO L87 Difference]: Start difference. First operand 217 states and 308 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:59,208 INFO L93 Difference]: Finished difference Result 317 states and 419 transitions. [2024-12-02 07:30:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:30:59,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2024-12-02 07:30:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:59,211 INFO L225 Difference]: With dead ends: 317 [2024-12-02 07:30:59,212 INFO L226 Difference]: Without dead ends: 315 [2024-12-02 07:30:59,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:30:59,213 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 68 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:59,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 520 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:30:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-12-02 07:30:59,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 259. [2024-12-02 07:30:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 158 states have (on average 1.139240506329114) internal successors, (180), 160 states have internal predecessors, (180), 88 states have call successors, (88), 12 states have call predecessors, (88), 12 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 07:30:59,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2024-12-02 07:30:59,256 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 125 [2024-12-02 07:30:59,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:59,256 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2024-12-02 07:30:59,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:30:59,257 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2024-12-02 07:30:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 07:30:59,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:59,258 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:59,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:30:59,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:59,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1272368860, now seen corresponding path program 1 times [2024-12-02 07:30:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701061025] [2024-12-02 07:30:59,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:31:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701061025] [2024-12-02 07:31:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701061025] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:31:00,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:31:00,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:31:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495404602] [2024-12-02 07:31:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:31:00,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:31:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:31:00,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:31:00,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:31:00,925 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:31:01,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:01,270 INFO L93 Difference]: Finished difference Result 315 states and 416 transitions. [2024-12-02 07:31:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:31:01,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 125 [2024-12-02 07:31:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:01,274 INFO L225 Difference]: With dead ends: 315 [2024-12-02 07:31:01,274 INFO L226 Difference]: Without dead ends: 313 [2024-12-02 07:31:01,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:31:01,275 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 37 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:01,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 538 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:31:01,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-12-02 07:31:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 253. [2024-12-02 07:31:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 152 states have (on average 1.125) internal successors, (171), 154 states have internal predecessors, (171), 88 states have call successors, (88), 12 states have call predecessors, (88), 12 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 07:31:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 347 transitions. [2024-12-02 07:31:01,314 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 347 transitions. Word has length 125 [2024-12-02 07:31:01,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:01,314 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 347 transitions. [2024-12-02 07:31:01,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:31:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 347 transitions. [2024-12-02 07:31:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 07:31:01,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:31:01,316 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:01,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:31:01,316 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:31:01,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:31:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1677304948, now seen corresponding path program 1 times [2024-12-02 07:31:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:31:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673773855] [2024-12-02 07:31:01,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:31:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:31:01,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:01,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673773855] [2024-12-02 07:31:01,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673773855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:31:01,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:31:01,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:31:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143248192] [2024-12-02 07:31:01,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:31:01,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:31:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:31:01,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:31:01,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:31:01,361 INFO L87 Difference]: Start difference. First operand 253 states and 347 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:31:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:01,390 INFO L93 Difference]: Finished difference Result 279 states and 378 transitions. [2024-12-02 07:31:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:31:01,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 126 [2024-12-02 07:31:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:01,391 INFO L225 Difference]: With dead ends: 279 [2024-12-02 07:31:01,392 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 07:31:01,392 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 07:31:01,393 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:01,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 150 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:31:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 07:31:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 07:31:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:31:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 07:31:01,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2024-12-02 07:31:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:01,395 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 07:31:01,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:31:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 07:31:01,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 07:31:01,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 07:31:01,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:31:01,401 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:31:01,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 07:31:02,470 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:31:02,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:31:02 BoogieIcfgContainer [2024-12-02 07:31:02,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:31:02,481 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:31:02,481 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:31:02,481 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:31:02,482 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:30:50" (3/4) ... [2024-12-02 07:31:02,484 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 07:31:02,488 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-12-02 07:31:02,492 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-12-02 07:31:02,492 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 07:31:02,492 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 07:31:02,492 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 07:31:02,567 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 07:31:02,567 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 07:31:02,567 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:31:02,568 INFO L158 Benchmark]: Toolchain (without parser) took 13017.62ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 117.8MB in the beginning and 249.6MB in the end (delta: -131.8MB). Peak memory consumption was 197.9MB. Max. memory is 16.1GB. [2024-12-02 07:31:02,568 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:31:02,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.72ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 104.8MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:31:02,569 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.29ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 102.7MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 07:31:02,569 INFO L158 Benchmark]: Boogie Preprocessor took 38.08ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 100.3MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:31:02,569 INFO L158 Benchmark]: RCFGBuilder took 330.20ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 84.9MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:31:02,570 INFO L158 Benchmark]: TraceAbstraction took 12278.36ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 84.1MB in the beginning and 257.9MB in the end (delta: -173.8MB). Peak memory consumption was 249.7MB. Max. memory is 16.1GB. [2024-12-02 07:31:02,570 INFO L158 Benchmark]: Witness Printer took 85.94ms. Allocated memory is still 478.2MB. Free memory was 257.9MB in the beginning and 249.6MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:31:02,571 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 142.6MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.72ms. Allocated memory is still 142.6MB. Free memory was 117.5MB in the beginning and 104.8MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.29ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 102.7MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.08ms. Allocated memory is still 142.6MB. Free memory was 102.7MB in the beginning and 100.3MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.20ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 84.9MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12278.36ms. Allocated memory was 142.6MB in the beginning and 478.2MB in the end (delta: 335.5MB). Free memory was 84.1MB in the beginning and 257.9MB in the end (delta: -173.8MB). Peak memory consumption was 249.7MB. Max. memory is 16.1GB. * Witness Printer took 85.94ms. Allocated memory is still 478.2MB. Free memory was 257.9MB in the beginning and 249.6MB in the end (delta: 8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.1s, OverallIterations: 8, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 288 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 288 mSDsluCounter, 2288 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1638 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 735 IncrementalHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 650 mSDtfsCounter, 735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 438 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=259occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 181 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 1245 NumberOfCodeBlocks, 1245 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1358 ConstructedInterpolants, 0 QuantifiedInterpolants, 3119 SizeOfPredicates, 1 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 8160/8360 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 108]: Loop Invariant Derived loop invariant: ((var_1_4 == 0) && (var_1_1 == 0)) RESULT: Ultimate proved your program to be correct! [2024-12-02 07:31:02,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59dc9a58-bd55-449b-9cb5-5f9b09adcecc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE