./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c --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_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/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_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/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_34fc320d-5e4a-4110-886c-d68e9d496cec/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 3b098f62dc80370f0e14e7fa6b354d0aae7e8d94738f84002290c368f38c01b4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:11:03,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:11:03,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:11:03,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:11:03,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:11:03,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:11:03,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:11:03,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:11:03,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:11:03,930 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:11:03,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:11:03,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:11:03,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:11:03,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:11:03,931 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:11:03,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:11:03,932 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:11:03,933 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:11:03,933 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:11:03,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:11:03,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:11:03,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:11:03,935 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:11:03,935 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_34fc320d-5e4a-4110-886c-d68e9d496cec/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 -> 3b098f62dc80370f0e14e7fa6b354d0aae7e8d94738f84002290c368f38c01b4 [2024-12-02 13:11:04,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:11:04,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:11:04,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:11:04,192 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:11:04,192 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:11:04,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem01_label24.c [2024-12-02 13:11:06,936 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/data/108af1ee1/711f2082f9cb46b2ace438947b83edd8/FLAG6bb11939e [2024-12-02 13:11:07,189 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:11:07,190 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/sv-benchmarks/c/eca-rers2012/Problem01_label24.c [2024-12-02 13:11:07,201 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/data/108af1ee1/711f2082f9cb46b2ace438947b83edd8/FLAG6bb11939e [2024-12-02 13:11:07,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/data/108af1ee1/711f2082f9cb46b2ace438947b83edd8 [2024-12-02 13:11:07,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:11:07,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:11:07,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:11:07,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:11:07,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:11:07,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f027c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07, skipping insertion in model container [2024-12-02 13:11:07,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,258 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:11:07,506 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_34fc320d-5e4a-4110-886c-d68e9d496cec/sv-benchmarks/c/eca-rers2012/Problem01_label24.c[17735,17748] [2024-12-02 13:11:07,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:11:07,543 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:11:07,613 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_34fc320d-5e4a-4110-886c-d68e9d496cec/sv-benchmarks/c/eca-rers2012/Problem01_label24.c[17735,17748] [2024-12-02 13:11:07,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:11:07,643 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:11:07,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07 WrapperNode [2024-12-02 13:11:07,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:11:07,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:11:07,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:11:07,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:11:07,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,706 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-12-02 13:11:07,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:11:07,707 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:11:07,707 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:11:07,707 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:11:07,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,736 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 13:11:07,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,752 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:11:07,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:11:07,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:11:07,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:11:07,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (1/1) ... [2024-12-02 13:11:07,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:11:07,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:07,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:11:07,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:11:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:11:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:11:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:11:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:11:07,884 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:11:07,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:11:08,756 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-12-02 13:11:08,756 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:11:08,772 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:11:08,772 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:11:08,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:08 BoogieIcfgContainer [2024-12-02 13:11:08,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:11:08,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:11:08,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:11:08,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:11:08,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:11:07" (1/3) ... [2024-12-02 13:11:08,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27aafb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:11:08, skipping insertion in model container [2024-12-02 13:11:08,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:07" (2/3) ... [2024-12-02 13:11:08,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27aafb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:11:08, skipping insertion in model container [2024-12-02 13:11:08,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:08" (3/3) ... [2024-12-02 13:11:08,781 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem01_label24.c [2024-12-02 13:11:08,806 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:11:08,808 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem01_label24.c that has 1 procedures, 198 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:11:08,857 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:11:08,867 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;@2be19ba9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:11:08,868 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:11:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 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 13:11:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-12-02 13:11:08,878 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:08,879 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:08,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:08,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash -342959657, now seen corresponding path program 1 times [2024-12-02 13:11:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:08,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133221393] [2024-12-02 13:11:08,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:08,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:09,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133221393] [2024-12-02 13:11:09,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133221393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:09,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:09,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:11:09,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135129973] [2024-12-02 13:11:09,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:09,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:09,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:09,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:09,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:11:09,342 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 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) Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 13:11:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:10,037 INFO L93 Difference]: Finished difference Result 553 states and 940 transitions. [2024-12-02 13:11:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:10,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) Word has length 98 [2024-12-02 13:11:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:10,050 INFO L225 Difference]: With dead ends: 553 [2024-12-02 13:11:10,050 INFO L226 Difference]: Without dead ends: 266 [2024-12-02 13:11:10,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:11:10,057 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 87 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:10,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 72 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 13:11:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-12-02 13:11:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-12-02 13:11:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4339622641509433) internal successors, (380), 265 states have internal predecessors, (380), 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 13:11:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2024-12-02 13:11:10,097 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 98 [2024-12-02 13:11:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:10,097 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2024-12-02 13:11:10,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 13:11:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2024-12-02 13:11:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 13:11:10,101 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:10,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:10,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:11:10,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:10,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash 687887018, now seen corresponding path program 1 times [2024-12-02 13:11:10,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:10,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673128751] [2024-12-02 13:11:10,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:10,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:10,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673128751] [2024-12-02 13:11:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673128751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:10,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:10,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:11:10,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540897852] [2024-12-02 13:11:10,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:10,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:10,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:10,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:10,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:11:10,272 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 13:11:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:10,701 INFO L93 Difference]: Finished difference Result 792 states and 1135 transitions. [2024-12-02 13:11:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) Word has length 104 [2024-12-02 13:11:10,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:10,703 INFO L225 Difference]: With dead ends: 792 [2024-12-02 13:11:10,703 INFO L226 Difference]: Without dead ends: 528 [2024-12-02 13:11:10,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:11:10,705 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 142 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:10,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 36 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:11:10,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-12-02 13:11:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2024-12-02 13:11:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3453510436432639) internal successors, (709), 527 states have internal predecessors, (709), 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 13:11:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 709 transitions. [2024-12-02 13:11:10,739 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 709 transitions. Word has length 104 [2024-12-02 13:11:10,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:10,739 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 709 transitions. [2024-12-02 13:11:10,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 13:11:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 709 transitions. [2024-12-02 13:11:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 13:11:10,742 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:10,742 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:10,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:11:10,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:10,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 61656490, now seen corresponding path program 1 times [2024-12-02 13:11:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:10,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419200788] [2024-12-02 13:11:10,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:10,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419200788] [2024-12-02 13:11:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419200788] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:11:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073254717] [2024-12-02 13:11:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:11,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:11:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:11,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:11:11,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:11:11,255 INFO L87 Difference]: Start difference. First operand 528 states and 709 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 13:11:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:11,833 INFO L93 Difference]: Finished difference Result 1280 states and 1708 transitions. [2024-12-02 13:11:11,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:11:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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) Word has length 105 [2024-12-02 13:11:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:11,836 INFO L225 Difference]: With dead ends: 1280 [2024-12-02 13:11:11,836 INFO L226 Difference]: Without dead ends: 659 [2024-12-02 13:11:11,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:11:11,838 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 127 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:11,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 82 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:11:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-12-02 13:11:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2024-12-02 13:11:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.1899696048632218) internal successors, (783), 658 states have internal predecessors, (783), 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 13:11:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 783 transitions. [2024-12-02 13:11:11,855 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 783 transitions. Word has length 105 [2024-12-02 13:11:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:11,855 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 783 transitions. [2024-12-02 13:11:11,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 13:11:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 783 transitions. [2024-12-02 13:11:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-12-02 13:11:11,858 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:11,858 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:11,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:11:11,859 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:11,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1795332504, now seen corresponding path program 1 times [2024-12-02 13:11:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332803444] [2024-12-02 13:11:11,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:12,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332803444] [2024-12-02 13:11:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332803444] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:12,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:11:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132747158] [2024-12-02 13:11:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:12,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:11:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:12,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:11:12,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:11:12,024 INFO L87 Difference]: Start difference. First operand 659 states and 783 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 13:11:12,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:12,662 INFO L93 Difference]: Finished difference Result 1840 states and 2243 transitions. [2024-12-02 13:11:12,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:11:12,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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) Word has length 113 [2024-12-02 13:11:12,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:12,665 INFO L225 Difference]: With dead ends: 1840 [2024-12-02 13:11:12,665 INFO L226 Difference]: Without dead ends: 1183 [2024-12-02 13:11:12,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:11:12,667 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 257 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:12,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 36 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 13:11:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2024-12-02 13:11:12,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2024-12-02 13:11:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1844331641285957) internal successors, (1400), 1182 states have internal predecessors, (1400), 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 13:11:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1400 transitions. [2024-12-02 13:11:12,688 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1400 transitions. Word has length 113 [2024-12-02 13:11:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:12,689 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1400 transitions. [2024-12-02 13:11:12,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 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 13:11:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1400 transitions. [2024-12-02 13:11:12,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 13:11:12,691 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:12,691 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:12,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:11:12,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:12,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:12,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1854501558, now seen corresponding path program 1 times [2024-12-02 13:11:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:12,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183866738] [2024-12-02 13:11:12,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:12,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:11:12,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183866738] [2024-12-02 13:11:12,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183866738] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:12,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:12,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:11:12,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359656724] [2024-12-02 13:11:12,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:12,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:12,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:12,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:11:12,772 INFO L87 Difference]: Start difference. First operand 1183 states and 1400 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 13:11:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:13,173 INFO L93 Difference]: Finished difference Result 3281 states and 3864 transitions. [2024-12-02 13:11:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) Word has length 122 [2024-12-02 13:11:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:13,179 INFO L225 Difference]: With dead ends: 3281 [2024-12-02 13:11:13,180 INFO L226 Difference]: Without dead ends: 2100 [2024-12-02 13:11:13,181 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 13:11:13,181 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:13,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 19 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:11:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-12-02 13:11:13,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1707. [2024-12-02 13:11:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.182883939038687) internal successors, (2018), 1706 states have internal predecessors, (2018), 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 13:11:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2018 transitions. [2024-12-02 13:11:13,214 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2018 transitions. Word has length 122 [2024-12-02 13:11:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:13,214 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2018 transitions. [2024-12-02 13:11:13,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 13:11:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2018 transitions. [2024-12-02 13:11:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-12-02 13:11:13,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:13,216 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:13,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:11:13,217 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:13,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash 379603641, now seen corresponding path program 1 times [2024-12-02 13:11:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286144988] [2024-12-02 13:11:13,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:13,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:11:13,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:13,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286144988] [2024-12-02 13:11:13,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286144988] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:13,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:11:13,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769352657] [2024-12-02 13:11:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:13,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:13,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:13,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:11:13,339 INFO L87 Difference]: Start difference. First operand 1707 states and 2018 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 13:11:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:13,733 INFO L93 Difference]: Finished difference Result 3805 states and 4477 transitions. [2024-12-02 13:11:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:13,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) Word has length 128 [2024-12-02 13:11:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:13,740 INFO L225 Difference]: With dead ends: 3805 [2024-12-02 13:11:13,740 INFO L226 Difference]: Without dead ends: 2100 [2024-12-02 13:11:13,742 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 13:11:13,743 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 121 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:13,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 191 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:11:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-12-02 13:11:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2024-12-02 13:11:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.1717479674796747) internal successors, (2306), 1968 states have internal predecessors, (2306), 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 13:11:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2306 transitions. [2024-12-02 13:11:13,791 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2306 transitions. Word has length 128 [2024-12-02 13:11:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:13,791 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2306 transitions. [2024-12-02 13:11:13,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 13:11:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2306 transitions. [2024-12-02 13:11:13,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 13:11:13,795 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:13,795 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:13,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:11:13,795 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:13,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash -74889028, now seen corresponding path program 1 times [2024-12-02 13:11:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:13,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20507635] [2024-12-02 13:11:13,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 13:11:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20507635] [2024-12-02 13:11:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20507635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:14,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:11:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:11:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449827165] [2024-12-02 13:11:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:14,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 13:11:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:14,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 13:11:14,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:11:14,009 INFO L87 Difference]: Start difference. First operand 1969 states and 2306 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 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 13:11:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:14,623 INFO L93 Difference]: Finished difference Result 4460 states and 5191 transitions. [2024-12-02 13:11:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:11:14,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 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) Word has length 142 [2024-12-02 13:11:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:14,631 INFO L225 Difference]: With dead ends: 4460 [2024-12-02 13:11:14,631 INFO L226 Difference]: Without dead ends: 2493 [2024-12-02 13:11:14,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 13:11:14,634 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 239 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:14,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 46 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:11:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2024-12-02 13:11:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2362. [2024-12-02 13:11:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 1.1524777636594663) internal successors, (2721), 2361 states have internal predecessors, (2721), 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 13:11:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 2721 transitions. [2024-12-02 13:11:14,690 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 2721 transitions. Word has length 142 [2024-12-02 13:11:14,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:14,690 INFO L471 AbstractCegarLoop]: Abstraction has 2362 states and 2721 transitions. [2024-12-02 13:11:14,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 3 states have internal predecessors, (132), 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 13:11:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 2721 transitions. [2024-12-02 13:11:14,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 13:11:14,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:14,694 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:14,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:11:14,694 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:14,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1107644441, now seen corresponding path program 1 times [2024-12-02 13:11:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204620268] [2024-12-02 13:11:14,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:11:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204620268] [2024-12-02 13:11:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204620268] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:11:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662435724] [2024-12-02 13:11:14,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:14,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:14,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:14,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:11:14,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:11:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:15,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:11:15,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:11:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 13:11:15,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:11:15,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662435724] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:15,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:11:15,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 13:11:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729278210] [2024-12-02 13:11:15,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:15,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:15,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:15,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:15,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:15,287 INFO L87 Difference]: Start difference. First operand 2362 states and 2721 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 13:11:15,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:15,648 INFO L93 Difference]: Finished difference Result 5246 states and 6084 transitions. [2024-12-02 13:11:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:15,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) Word has length 159 [2024-12-02 13:11:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:15,658 INFO L225 Difference]: With dead ends: 5246 [2024-12-02 13:11:15,658 INFO L226 Difference]: Without dead ends: 2886 [2024-12-02 13:11:15,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:15,661 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 42 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:15,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 179 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:11:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2024-12-02 13:11:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2624. [2024-12-02 13:11:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2623 states have (on average 1.14944719786504) internal successors, (3015), 2623 states have internal predecessors, (3015), 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 13:11:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3015 transitions. [2024-12-02 13:11:15,718 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3015 transitions. Word has length 159 [2024-12-02 13:11:15,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:15,718 INFO L471 AbstractCegarLoop]: Abstraction has 2624 states and 3015 transitions. [2024-12-02 13:11:15,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 13:11:15,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3015 transitions. [2024-12-02 13:11:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:11:15,723 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:15,723 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:15,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:11:15,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 13:11:15,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:15,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1214542861, now seen corresponding path program 1 times [2024-12-02 13:11:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:15,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754476552] [2024-12-02 13:11:15,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 13:11:16,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754476552] [2024-12-02 13:11:16,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754476552] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:11:16,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260121760] [2024-12-02 13:11:16,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:16,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:16,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:16,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:11:16,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:11:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:16,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:11:16,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:11:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-12-02 13:11:16,476 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:11:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260121760] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:16,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:11:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 13:11:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339140888] [2024-12-02 13:11:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:16,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:16,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:16,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:16,479 INFO L87 Difference]: Start difference. First operand 2624 states and 3015 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 13:11:16,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:16,837 INFO L93 Difference]: Finished difference Result 5377 states and 6183 transitions. [2024-12-02 13:11:16,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:16,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) Word has length 175 [2024-12-02 13:11:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:16,845 INFO L225 Difference]: With dead ends: 5377 [2024-12-02 13:11:16,845 INFO L226 Difference]: Without dead ends: 2755 [2024-12-02 13:11:16,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:16,848 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:16,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:11:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-12-02 13:11:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2493. [2024-12-02 13:11:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2493 states, 2492 states have (on average 1.118378812199037) internal successors, (2787), 2492 states have internal predecessors, (2787), 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 13:11:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2493 states to 2493 states and 2787 transitions. [2024-12-02 13:11:16,900 INFO L78 Accepts]: Start accepts. Automaton has 2493 states and 2787 transitions. Word has length 175 [2024-12-02 13:11:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:16,901 INFO L471 AbstractCegarLoop]: Abstraction has 2493 states and 2787 transitions. [2024-12-02 13:11:16,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 13:11:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2493 states and 2787 transitions. [2024-12-02 13:11:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 13:11:16,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:11:16,906 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:16,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:11:17,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:17,106 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:11:17,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:11:17,107 INFO L85 PathProgramCache]: Analyzing trace with hash 445586994, now seen corresponding path program 1 times [2024-12-02 13:11:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:11:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130674290] [2024-12-02 13:11:17,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:11:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 124 proven. 11 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-12-02 13:11:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:11:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130674290] [2024-12-02 13:11:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130674290] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:11:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319115376] [2024-12-02 13:11:17,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:11:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:11:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:11:17,293 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:11:17,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:11:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:11:17,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:11:17,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:11:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-12-02 13:11:17,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:11:17,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319115376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:11:17,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:11:17,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 13:11:17,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029532043] [2024-12-02 13:11:17,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:11:17,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:11:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:11:17,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:11:17,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:17,565 INFO L87 Difference]: Start difference. First operand 2493 states and 2787 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 13:11:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:11:17,921 INFO L93 Difference]: Finished difference Result 5637 states and 6315 transitions. [2024-12-02 13:11:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:11:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) Word has length 189 [2024-12-02 13:11:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:11:17,922 INFO L225 Difference]: With dead ends: 5637 [2024-12-02 13:11:17,922 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 13:11:17,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:11:17,925 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:11:17,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 188 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:11:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 13:11:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 13:11:17,926 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 13:11:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 13:11:17,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2024-12-02 13:11:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:11:17,926 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 13:11:17,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 13:11:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 13:11:17,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 13:11:17,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 13:11:17,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:11:18,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 13:11:18,132 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:11:18,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 13:11:18,298 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 13:11:18,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:11:18 BoogieIcfgContainer [2024-12-02 13:11:18,311 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 13:11:18,311 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 13:11:18,311 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 13:11:18,312 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 13:11:18,312 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:08" (3/4) ... [2024-12-02 13:11:18,314 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 13:11:18,327 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-12-02 13:11:18,328 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-12-02 13:11:18,329 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 13:11:18,329 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 13:11:18,434 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 13:11:18,434 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 13:11:18,434 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 13:11:18,435 INFO L158 Benchmark]: Toolchain (without parser) took 11214.28ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 115.3MB in the beginning and 248.8MB in the end (delta: -133.5MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,435 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 13:11:18,435 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.53ms. Allocated memory is still 142.6MB. Free memory was 115.1MB in the beginning and 88.3MB in the end (delta: 26.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,435 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.46ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 82.9MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,436 INFO L158 Benchmark]: Boogie Preprocessor took 67.34ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 78.0MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,436 INFO L158 Benchmark]: RCFGBuilder took 997.84ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 54.8MB in the end (delta: 23.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,436 INFO L158 Benchmark]: TraceAbstraction took 9536.57ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 54.3MB in the beginning and 261.8MB in the end (delta: -207.5MB). Peak memory consumption was 124.8MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,436 INFO L158 Benchmark]: Witness Printer took 122.62ms. Allocated memory is still 310.4MB. Free memory was 261.8MB in the beginning and 248.8MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 13:11:18,438 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.53ms. Allocated memory is still 142.6MB. Free memory was 115.1MB in the beginning and 88.3MB in the end (delta: 26.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.46ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 82.9MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.34ms. Allocated memory is still 142.6MB. Free memory was 82.9MB in the beginning and 78.0MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 997.84ms. Allocated memory is still 142.6MB. Free memory was 78.0MB in the beginning and 54.8MB in the end (delta: 23.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9536.57ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 54.3MB in the beginning and 261.8MB in the end (delta: -207.5MB). Peak memory consumption was 124.8MB. Max. memory is 16.1GB. * Witness Printer took 122.62ms. Allocated memory is still 310.4MB. Free memory was 261.8MB in the beginning and 248.8MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. 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: 480]: 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 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1226 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1226 mSDsluCounter, 1014 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 483 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4194 IncrementalHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 483 mSolverCounterUnsat, 939 mSDtfsCounter, 4194 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 551 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2624occurred in iteration=8, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1179 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1858 NumberOfCodeBlocks, 1858 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1845 ConstructedInterpolants, 0 QuantifiedInterpolants, 6114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1077 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 897/930 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: 593]: Loop Invariant Derived loop invariant: (((((((a21 <= 0) && (a16 <= 4)) && (a20 == 1)) || ((((5 == a16) && (a21 <= 0)) && (a17 == 1)) && (a20 == 1))) || (a17 < 1)) || ((a17 == 1) && (a16 <= 4))) || ((a7 != 1) && (a17 == 1))) RESULT: Ultimate proved your program to be correct! [2024-12-02 13:11:18,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34fc320d-5e4a-4110-886c-d68e9d496cec/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