./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/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_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/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_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/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 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:21:43,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:21:43,619 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:21:43,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:21:43,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:21:43,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:21:43,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:21:43,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:21:43,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:21:43,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:21:43,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:21:43,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:21:43,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:21:43,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:21:43,644 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:21:43,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:21:43,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:21:43,646 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:21:43,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:21:43,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:21:43,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:21:43,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:21:43,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:21:43,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:21:43,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:21:43,648 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_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/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 -> 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e [2024-12-02 11:21:43,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:21:43,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:21:43,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:21:43,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:21:43,919 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:21:43,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-12-02 11:21:47,273 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/data/f4bd337e7/47fa9434f25a458b89ff2f7d3032a25a/FLAGd18306d31 [2024-12-02 11:21:47,504 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:21:47,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-12-02 11:21:47,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/data/f4bd337e7/47fa9434f25a458b89ff2f7d3032a25a/FLAGd18306d31 [2024-12-02 11:21:47,533 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/data/f4bd337e7/47fa9434f25a458b89ff2f7d3032a25a [2024-12-02 11:21:47,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:21:47,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:21:47,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:21:47,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:21:47,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:21:47,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407c18e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47, skipping insertion in model container [2024-12-02 11:21:47,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:21:47,708 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_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-12-02 11:21:47,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:21:47,736 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:21:47,747 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_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-12-02 11:21:47,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:21:47,773 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:21:47,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47 WrapperNode [2024-12-02 11:21:47,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:21:47,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:21:47,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:21:47,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:21:47,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,804 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-12-02 11:21:47,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:21:47,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:21:47,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:21:47,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:21:47,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,816 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,831 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-12-02 11:21:47,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,838 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:21:47,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:21:47,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:21:47,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:21:47,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (1/1) ... [2024-12-02 11:21:47,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:21:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:47,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:21:47,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:21:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:21:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:21:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:21:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:21:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:21:47,978 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:21:47,980 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:21:48,132 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-12-02 11:21:48,132 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:21:48,141 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:21:48,141 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 11:21:48,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:21:48 BoogieIcfgContainer [2024-12-02 11:21:48,142 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:21:48,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:21:48,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:21:48,149 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:21:48,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:21:47" (1/3) ... [2024-12-02 11:21:48,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41135c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:21:48, skipping insertion in model container [2024-12-02 11:21:48,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:21:47" (2/3) ... [2024-12-02 11:21:48,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41135c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:21:48, skipping insertion in model container [2024-12-02 11:21:48,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:21:48" (3/3) ... [2024-12-02 11:21:48,151 INFO L128 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2024-12-02 11:21:48,169 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:21:48,170 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sorting_bubblesort_ground-1.i that has 1 procedures, 26 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-12-02 11:21:48,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:21:48,242 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;@6d199367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:21:48,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:21:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 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 11:21:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 11:21:48,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:48,252 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:48,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:48,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1205302859, now seen corresponding path program 1 times [2024-12-02 11:21:48,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:48,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404335557] [2024-12-02 11:21:48,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:48,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:48,454 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 11:21:48,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:48,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404335557] [2024-12-02 11:21:48,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404335557] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:21:48,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:21:48,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:21:48,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111154738] [2024-12-02 11:21:48,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:21:48,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:21:48,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:48,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:21:48,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:21:48,489 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 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 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 11:21:48,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:48,528 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2024-12-02 11:21:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:21:48,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2024-12-02 11:21:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:48,540 INFO L225 Difference]: With dead ends: 50 [2024-12-02 11:21:48,541 INFO L226 Difference]: Without dead ends: 24 [2024-12-02 11:21:48,544 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 11:21:48,547 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:48,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:21:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-12-02 11:21:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-12-02 11:21:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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 11:21:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-12-02 11:21:48,584 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2024-12-02 11:21:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:48,584 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-12-02 11:21:48,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 11:21:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-12-02 11:21:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 11:21:48,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:48,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:48,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:21:48,586 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:48,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash -368722126, now seen corresponding path program 1 times [2024-12-02 11:21:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354399062] [2024-12-02 11:21:48,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:21:48,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:48,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354399062] [2024-12-02 11:21:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354399062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:48,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206922938] [2024-12-02 11:21:48,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:48,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:48,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:48,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:21:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:48,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:21:48,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:21:48,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:21:48,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206922938] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:21:48,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:21:48,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 11:21:48,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891886502] [2024-12-02 11:21:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:21:48,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:21:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:48,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:21:48,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:21:48,804 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 11:21:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:48,822 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-12-02 11:21:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:21:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-12-02 11:21:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:48,824 INFO L225 Difference]: With dead ends: 39 [2024-12-02 11:21:48,824 INFO L226 Difference]: Without dead ends: 29 [2024-12-02 11:21:48,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:21:48,825 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:48,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:21:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-12-02 11:21:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-12-02 11:21:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 11:21:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-12-02 11:21:48,832 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2024-12-02 11:21:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:48,832 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-12-02 11:21:48,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 11:21:48,833 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-12-02 11:21:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 11:21:48,834 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:48,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:48,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:21:49,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 11:21:49,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:49,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1959168573, now seen corresponding path program 1 times [2024-12-02 11:21:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:49,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900887294] [2024-12-02 11:21:49,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:21:49,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:49,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900887294] [2024-12-02 11:21:49,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900887294] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230598117] [2024-12-02 11:21:49,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:49,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:49,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:49,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:21:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:49,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 11:21:49,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:21:49,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:21:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230598117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:21:49,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:21:49,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 11:21:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149364577] [2024-12-02 11:21:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:21:49,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:21:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:49,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:21:49,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:21:49,233 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 11:21:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:49,259 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-12-02 11:21:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:21:49,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2024-12-02 11:21:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:49,261 INFO L225 Difference]: With dead ends: 57 [2024-12-02 11:21:49,261 INFO L226 Difference]: Without dead ends: 34 [2024-12-02 11:21:49,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:21:49,262 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:49,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:21:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-12-02 11:21:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2024-12-02 11:21:49,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 11:21:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-12-02 11:21:49,269 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2024-12-02 11:21:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:49,269 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-12-02 11:21:49,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 11:21:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-12-02 11:21:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 11:21:49,270 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:49,270 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] [2024-12-02 11:21:49,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:21:49,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:49,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:49,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:49,471 INFO L85 PathProgramCache]: Analyzing trace with hash -643840535, now seen corresponding path program 1 times [2024-12-02 11:21:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:49,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956444313] [2024-12-02 11:21:49,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:49,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:21:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956444313] [2024-12-02 11:21:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956444313] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488591422] [2024-12-02 11:21:49,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:49,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:49,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:49,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:21:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:49,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:21:49,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:21:49,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:21:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488591422] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:49,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 11:21:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415857052] [2024-12-02 11:21:49,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:49,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:21:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:49,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:21:49,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:21:49,696 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 11:21:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:49,728 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2024-12-02 11:21:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:21:49,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 22 [2024-12-02 11:21:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:49,730 INFO L225 Difference]: With dead ends: 61 [2024-12-02 11:21:49,730 INFO L226 Difference]: Without dead ends: 36 [2024-12-02 11:21:49,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:21:49,731 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:49,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:21:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-12-02 11:21:49,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-12-02 11:21:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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 11:21:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-12-02 11:21:49,736 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 22 [2024-12-02 11:21:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:49,737 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-12-02 11:21:49,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 11:21:49,737 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-12-02 11:21:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-02 11:21:49,738 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:49,738 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:49,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:21:49,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:49,939 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:49,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:49,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2029353397, now seen corresponding path program 2 times [2024-12-02 11:21:49,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:49,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083335284] [2024-12-02 11:21:49,940 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:21:49,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:49,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:21:49,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 11:21:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083335284] [2024-12-02 11:21:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083335284] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416082489] [2024-12-02 11:21:50,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:21:50,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:50,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:50,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:21:50,129 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:21:50,129 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:50,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:21:50,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:21:50,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:21:50,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416082489] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:50,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-12-02 11:21:50,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917412008] [2024-12-02 11:21:50,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:50,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 11:21:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:50,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 11:21:50,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-12-02 11:21:50,302 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 11:21:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:50,423 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2024-12-02 11:21:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 11:21:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 28 [2024-12-02 11:21:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:50,425 INFO L225 Difference]: With dead ends: 85 [2024-12-02 11:21:50,425 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 11:21:50,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-12-02 11:21:50,426 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:50,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 165 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:21:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 11:21:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2024-12-02 11:21:50,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 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 11:21:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-12-02 11:21:50,435 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 28 [2024-12-02 11:21:50,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:50,435 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-12-02 11:21:50,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 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 11:21:50,435 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-12-02 11:21:50,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 11:21:50,436 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:50,437 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:50,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:21:50,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:50,637 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:50,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:50,638 INFO L85 PathProgramCache]: Analyzing trace with hash -332299917, now seen corresponding path program 3 times [2024-12-02 11:21:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261580458] [2024-12-02 11:21:50,638 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:21:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:50,673 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 11:21:50,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 11:21:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261580458] [2024-12-02 11:21:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261580458] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:50,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810950788] [2024-12-02 11:21:50,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:21:50,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:50,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:50,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:21:50,833 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 11:21:50,833 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:50,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:21:50,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 11:21:50,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 11:21:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810950788] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:50,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:50,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-12-02 11:21:50,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096552189] [2024-12-02 11:21:50,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:50,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:21:50,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:50,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:21:50,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:21:50,937 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 11:21:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:51,010 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2024-12-02 11:21:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:21:51,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 44 [2024-12-02 11:21:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:51,011 INFO L225 Difference]: With dead ends: 116 [2024-12-02 11:21:51,011 INFO L226 Difference]: Without dead ends: 86 [2024-12-02 11:21:51,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:21:51,013 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:51,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:21:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-12-02 11:21:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-12-02 11:21:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2) internal successors, (102), 85 states have internal predecessors, (102), 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 11:21:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2024-12-02 11:21:51,022 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 44 [2024-12-02 11:21:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:51,023 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2024-12-02 11:21:51,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 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 11:21:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2024-12-02 11:21:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 11:21:51,025 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:51,025 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:51,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:21:51,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:51,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:51,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:51,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1289768971, now seen corresponding path program 4 times [2024-12-02 11:21:51,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:51,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877241207] [2024-12-02 11:21:51,226 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:21:51,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:51,260 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:21:51,260 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 11:21:51,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877241207] [2024-12-02 11:21:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877241207] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:51,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236614037] [2024-12-02 11:21:51,848 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:21:51,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:51,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:51,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:51,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:21:51,937 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:21:51,938 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:51,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 11:21:51,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:52,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:21:52,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2024-12-02 11:21:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 11:21:52,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:52,425 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-12-02 11:21:52,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 28 [2024-12-02 11:21:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-12-02 11:21:52,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236614037] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:52,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:52,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 16 [2024-12-02 11:21:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070132294] [2024-12-02 11:21:52,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:52,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 11:21:52,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:52,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 11:21:52,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:21:52,477 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 11:21:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:52,709 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2024-12-02 11:21:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:21:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 60 [2024-12-02 11:21:52,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:52,713 INFO L225 Difference]: With dead ends: 185 [2024-12-02 11:21:52,713 INFO L226 Difference]: Without dead ends: 123 [2024-12-02 11:21:52,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:21:52,715 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:52,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 146 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:21:52,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-02 11:21:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 115. [2024-12-02 11:21:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 114 states have internal predecessors, (136), 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 11:21:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2024-12-02 11:21:52,730 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 60 [2024-12-02 11:21:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:52,730 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2024-12-02 11:21:52,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 11:21:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2024-12-02 11:21:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 11:21:52,732 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:52,732 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:52,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 11:21:52,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 11:21:52,933 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:52,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1304529873, now seen corresponding path program 1 times [2024-12-02 11:21:52,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:52,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774423880] [2024-12-02 11:21:52,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:52,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:53,253 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:21:53,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774423880] [2024-12-02 11:21:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774423880] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051251776] [2024-12-02 11:21:53,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:21:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:53,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:53,256 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:53,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:21:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:21:53,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 11:21:53,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:21:53,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:21:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051251776] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:53,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-12-02 11:21:53,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816952905] [2024-12-02 11:21:53,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:53,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 11:21:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:53,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 11:21:53,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 11:21:53,671 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 11:21:53,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:53,776 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2024-12-02 11:21:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 11:21:53,777 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 64 [2024-12-02 11:21:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:53,778 INFO L225 Difference]: With dead ends: 231 [2024-12-02 11:21:53,778 INFO L226 Difference]: Without dead ends: 139 [2024-12-02 11:21:53,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-12-02 11:21:53,780 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:53,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:21:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-12-02 11:21:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-12-02 11:21:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1594202898550725) internal successors, (160), 138 states have internal predecessors, (160), 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 11:21:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 160 transitions. [2024-12-02 11:21:53,796 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 160 transitions. Word has length 64 [2024-12-02 11:21:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:53,796 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 160 transitions. [2024-12-02 11:21:53,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 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 11:21:53,797 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 160 transitions. [2024-12-02 11:21:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 11:21:53,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:53,798 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:53,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 11:21:53,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:53,999 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:54,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -800675583, now seen corresponding path program 2 times [2024-12-02 11:21:54,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:54,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376570888] [2024-12-02 11:21:54,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:21:54,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:54,046 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:21:54,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:21:54,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:54,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376570888] [2024-12-02 11:21:54,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376570888] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:54,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92355683] [2024-12-02 11:21:54,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:21:54,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:54,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:54,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:54,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:21:55,004 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:21:55,004 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:55,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:21:55,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:21:55,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-12-02 11:21:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92355683] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:56,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:56,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-12-02 11:21:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627611624] [2024-12-02 11:21:56,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:56,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 11:21:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:56,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 11:21:56,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 11:21:56,127 INFO L87 Difference]: Start difference. First operand 139 states and 160 transitions. Second operand has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 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 11:21:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:56,342 INFO L93 Difference]: Finished difference Result 279 states and 344 transitions. [2024-12-02 11:21:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 11:21:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 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 88 [2024-12-02 11:21:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:56,344 INFO L225 Difference]: With dead ends: 279 [2024-12-02 11:21:56,345 INFO L226 Difference]: Without dead ends: 187 [2024-12-02 11:21:56,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 11:21:56,347 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:56,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:21:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-12-02 11:21:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-12-02 11:21:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.118279569892473) internal successors, (208), 186 states have internal predecessors, (208), 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 11:21:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 208 transitions. [2024-12-02 11:21:56,367 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 208 transitions. Word has length 88 [2024-12-02 11:21:56,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:56,368 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 208 transitions. [2024-12-02 11:21:56,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 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 11:21:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 208 transitions. [2024-12-02 11:21:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 11:21:56,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:56,370 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:56,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 11:21:56,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-12-02 11:21:56,571 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:56,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1705561247, now seen corresponding path program 3 times [2024-12-02 11:21:56,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:56,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605719517] [2024-12-02 11:21:56,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:21:56,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:56,666 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 11:21:56,667 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-12-02 11:21:56,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:56,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605719517] [2024-12-02 11:21:56,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605719517] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:56,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237303242] [2024-12-02 11:21:56,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:21:56,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:56,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:56,807 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:56,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:21:56,980 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-12-02 11:21:56,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:56,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:21:56,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-12-02 11:21:57,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-12-02 11:21:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237303242] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:57,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:57,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-12-02 11:21:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119729343] [2024-12-02 11:21:57,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:57,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 11:21:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:57,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 11:21:57,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:21:57,167 INFO L87 Difference]: Start difference. First operand 187 states and 208 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 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 11:21:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:21:57,277 INFO L93 Difference]: Finished difference Result 374 states and 463 transitions. [2024-12-02 11:21:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 11:21:57,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 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 136 [2024-12-02 11:21:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:21:57,280 INFO L225 Difference]: With dead ends: 374 [2024-12-02 11:21:57,280 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 11:21:57,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:21:57,281 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:21:57,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 127 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:21:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 11:21:57,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-12-02 11:21:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.1631205673758864) internal successors, (328), 282 states have internal predecessors, (328), 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 11:21:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 328 transitions. [2024-12-02 11:21:57,299 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 328 transitions. Word has length 136 [2024-12-02 11:21:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:21:57,300 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 328 transitions. [2024-12-02 11:21:57,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 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 11:21:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 328 transitions. [2024-12-02 11:21:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 11:21:57,302 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:21:57,303 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:21:57,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:21:57,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 11:21:57,503 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:21:57,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:21:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash 854059153, now seen corresponding path program 4 times [2024-12-02 11:21:57,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:21:57,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241168009] [2024-12-02 11:21:57,504 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:21:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:21:57,558 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:21:57,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2498 backedges. 1 proven. 105 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2024-12-02 11:21:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:21:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241168009] [2024-12-02 11:21:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241168009] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:21:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076933364] [2024-12-02 11:21:58,430 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:21:58,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:21:58,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:21:58,432 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:21:58,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:21:58,603 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:21:58,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:21:58,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 11:21:58,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:21:59,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:21:59,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 13 [2024-12-02 11:21:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2498 backedges. 1 proven. 93 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2024-12-02 11:21:59,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:59,780 INFO L349 Elim1Store]: treesize reduction 13, result has 74.5 percent of original size [2024-12-02 11:21:59,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 49 [2024-12-02 11:21:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2498 backedges. 64 proven. 30 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2024-12-02 11:21:59,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076933364] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:59,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:59,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2024-12-02 11:21:59,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478084288] [2024-12-02 11:21:59,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:59,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 11:21:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:59,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 11:21:59,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-12-02 11:21:59,818 INFO L87 Difference]: Start difference. First operand 283 states and 328 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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 11:22:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:00,856 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2024-12-02 11:22:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 11:22:00,857 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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 168 [2024-12-02 11:22:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:00,859 INFO L225 Difference]: With dead ends: 377 [2024-12-02 11:22:00,859 INFO L226 Difference]: Without dead ends: 368 [2024-12-02 11:22:00,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 319 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 11:22:00,860 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 100 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:00,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 421 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:22:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-12-02 11:22:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 287. [2024-12-02 11:22:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.1608391608391608) internal successors, (332), 286 states have internal predecessors, (332), 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 11:22:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 332 transitions. [2024-12-02 11:22:00,872 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 332 transitions. Word has length 168 [2024-12-02 11:22:00,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:00,873 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 332 transitions. [2024-12-02 11:22:00,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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 11:22:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 332 transitions. [2024-12-02 11:22:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 11:22:00,874 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:00,874 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 14, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:00,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:22:01,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 11:22:01,075 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:01,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1033728343, now seen corresponding path program 5 times [2024-12-02 11:22:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:01,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841588195] [2024-12-02 11:22:01,076 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 11:22:01,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:01,539 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-12-02 11:22:01,539 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:22:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2505 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 2126 trivial. 0 not checked. [2024-12-02 11:22:01,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841588195] [2024-12-02 11:22:01,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841588195] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:01,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322576499] [2024-12-02 11:22:01,973 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 11:22:01,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:01,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:01,975 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:01,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:22:48,533 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-12-02 11:22:48,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:22:48,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 11:22:48,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:48,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2505 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 2126 trivial. 0 not checked. [2024-12-02 11:22:48,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:22:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2505 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 2126 trivial. 0 not checked. [2024-12-02 11:22:49,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322576499] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:22:49,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:22:49,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-12-02 11:22:49,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132769084] [2024-12-02 11:22:49,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:22:49,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 11:22:49,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:49,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 11:22:49,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-12-02 11:22:49,003 INFO L87 Difference]: Start difference. First operand 287 states and 332 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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 11:22:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:49,210 INFO L93 Difference]: Finished difference Result 670 states and 855 transitions. [2024-12-02 11:22:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 11:22:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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 172 [2024-12-02 11:22:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:49,213 INFO L225 Difference]: With dead ends: 670 [2024-12-02 11:22:49,214 INFO L226 Difference]: Without dead ends: 479 [2024-12-02 11:22:49,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-12-02 11:22:49,215 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 76 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:49,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 160 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:22:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-12-02 11:22:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-12-02 11:22:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.1966527196652719) internal successors, (572), 478 states have internal predecessors, (572), 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 11:22:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 572 transitions. [2024-12-02 11:22:49,246 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 572 transitions. Word has length 172 [2024-12-02 11:22:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:49,246 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 572 transitions. [2024-12-02 11:22:49,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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 11:22:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 572 transitions. [2024-12-02 11:22:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-12-02 11:22:49,250 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:49,250 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 30, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:49,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:22:49,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:49,451 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:49,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1619028919, now seen corresponding path program 6 times [2024-12-02 11:22:49,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:49,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642493696] [2024-12-02 11:22:49,452 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 11:22:49,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:49,620 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-12-02 11:22:49,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:22:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3897 backedges. 1 proven. 322 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2024-12-02 11:22:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642493696] [2024-12-02 11:22:50,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642493696] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:50,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018397204] [2024-12-02 11:22:50,889 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 11:22:50,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:50,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:50,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:50,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:22:52,579 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-12-02 11:22:52,579 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:22:52,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 11:22:52,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:53,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:22:53,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-12-02 11:22:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3897 backedges. 1 proven. 322 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2024-12-02 11:22:53,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:22:54,589 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-12-02 11:22:54,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-12-02 11:22:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3897 backedges. 28 proven. 295 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2024-12-02 11:22:54,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018397204] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:22:54,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:22:54,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2024-12-02 11:22:54,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645696852] [2024-12-02 11:22:54,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:22:54,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 11:22:54,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:22:54,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 11:22:54,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 11:22:54,647 INFO L87 Difference]: Start difference. First operand 479 states and 572 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 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 11:22:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:22:55,262 INFO L93 Difference]: Finished difference Result 632 states and 762 transitions. [2024-12-02 11:22:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 11:22:55,262 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 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 236 [2024-12-02 11:22:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:22:55,264 INFO L225 Difference]: With dead ends: 632 [2024-12-02 11:22:55,265 INFO L226 Difference]: Without dead ends: 623 [2024-12-02 11:22:55,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 11:22:55,266 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:22:55,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 282 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:22:55,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-12-02 11:22:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 483. [2024-12-02 11:22:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.1950207468879668) internal successors, (576), 482 states have internal predecessors, (576), 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 11:22:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 576 transitions. [2024-12-02 11:22:55,301 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 576 transitions. Word has length 236 [2024-12-02 11:22:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:22:55,302 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 576 transitions. [2024-12-02 11:22:55,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 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 11:22:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 576 transitions. [2024-12-02 11:22:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-12-02 11:22:55,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:22:55,306 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 30, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:22:55,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 11:22:55,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:55,507 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:22:55,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:22:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash 391377277, now seen corresponding path program 7 times [2024-12-02 11:22:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:22:55,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507703898] [2024-12-02 11:22:55,508 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 11:22:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:22:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-12-02 11:22:57,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:22:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507703898] [2024-12-02 11:22:57,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507703898] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:22:57,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585289043] [2024-12-02 11:22:57,588 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 11:22:57,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:22:57,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:22:57,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:22:57,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 11:22:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:22:57,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 11:22:57,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:22:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-12-02 11:22:58,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-12-02 11:23:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585289043] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:23:00,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:23:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-12-02 11:23:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058141962] [2024-12-02 11:23:00,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:00,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-12-02 11:23:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:00,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-12-02 11:23:00,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 11:23:00,989 INFO L87 Difference]: Start difference. First operand 483 states and 576 transitions. Second operand has 97 states, 97 states have (on average 2.1752577319587627) internal successors, (211), 97 states have internal predecessors, (211), 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 11:23:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:01,357 INFO L93 Difference]: Finished difference Result 967 states and 1200 transitions. [2024-12-02 11:23:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-12-02 11:23:01,358 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.1752577319587627) internal successors, (211), 97 states have internal predecessors, (211), 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 240 [2024-12-02 11:23:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:01,360 INFO L225 Difference]: With dead ends: 967 [2024-12-02 11:23:01,361 INFO L226 Difference]: Without dead ends: 579 [2024-12-02 11:23:01,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-12-02 11:23:01,363 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:01,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:23:01,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-12-02 11:23:01,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-12-02 11:23:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.1626297577854672) internal successors, (672), 578 states have internal predecessors, (672), 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 11:23:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 672 transitions. [2024-12-02 11:23:01,388 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 672 transitions. Word has length 240 [2024-12-02 11:23:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:01,388 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 672 transitions. [2024-12-02 11:23:01,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.1752577319587627) internal successors, (211), 97 states have internal predecessors, (211), 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 11:23:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 672 transitions. [2024-12-02 11:23:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-12-02 11:23:01,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:01,390 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 30, 30, 30, 30, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:01,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 11:23:01,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:01,591 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:01,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 134514237, now seen corresponding path program 8 times [2024-12-02 11:23:01,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:01,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350887395] [2024-12-02 11:23:01,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:23:01,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:01,684 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:23:01,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10628 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-12-02 11:23:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350887395] [2024-12-02 11:23:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350887395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:08,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793269187] [2024-12-02 11:23:08,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:23:08,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:08,088 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:08,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 11:23:08,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:23:08,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:08,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-12-02 11:23:08,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10628 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-12-02 11:23:08,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 10628 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-12-02 11:23:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793269187] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:23:19,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:23:19,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-12-02 11:23:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871207568] [2024-12-02 11:23:19,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:19,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-12-02 11:23:19,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:19,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-12-02 11:23:19,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-12-02 11:23:19,708 INFO L87 Difference]: Start difference. First operand 579 states and 672 transitions. Second operand has 193 states, 193 states have (on average 2.088082901554404) internal successors, (403), 193 states have internal predecessors, (403), 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 11:23:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:20,893 INFO L93 Difference]: Finished difference Result 1159 states and 1440 transitions. [2024-12-02 11:23:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-12-02 11:23:20,894 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.088082901554404) internal successors, (403), 193 states have internal predecessors, (403), 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 336 [2024-12-02 11:23:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:20,897 INFO L225 Difference]: With dead ends: 1159 [2024-12-02 11:23:20,897 INFO L226 Difference]: Without dead ends: 771 [2024-12-02 11:23:20,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-12-02 11:23:20,900 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:20,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:23:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-12-02 11:23:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-12-02 11:23:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.122077922077922) internal successors, (864), 770 states have internal predecessors, (864), 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 11:23:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 864 transitions. [2024-12-02 11:23:20,947 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 864 transitions. Word has length 336 [2024-12-02 11:23:20,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:20,948 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 864 transitions. [2024-12-02 11:23:20,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.088082901554404) internal successors, (403), 193 states have internal predecessors, (403), 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 11:23:20,948 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 864 transitions. [2024-12-02 11:23:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-12-02 11:23:20,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:20,953 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 30, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:20,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 11:23:21,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 11:23:21,154 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:21,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1875554237, now seen corresponding path program 9 times [2024-12-02 11:23:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:21,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264589522] [2024-12-02 11:23:21,155 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:23:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:21,326 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-12-02 11:23:21,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 37892 backedges. 1 proven. 439 refuted. 0 times theorem prover too weak. 37452 trivial. 0 not checked. [2024-12-02 11:23:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264589522] [2024-12-02 11:23:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264589522] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966278413] [2024-12-02 11:23:22,145 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 11:23:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:22,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:22,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 11:23:23,018 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-12-02 11:23:23,018 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:23,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 11:23:23,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:24,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:23:24,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-12-02 11:23:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 37892 backedges. 1 proven. 439 refuted. 0 times theorem prover too weak. 37452 trivial. 0 not checked. [2024-12-02 11:23:24,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:25,387 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-12-02 11:23:25,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-12-02 11:23:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 37892 backedges. 27 proven. 413 refuted. 0 times theorem prover too weak. 37452 trivial. 0 not checked. [2024-12-02 11:23:25,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966278413] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:23:25,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:23:25,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 41 [2024-12-02 11:23:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901222852] [2024-12-02 11:23:25,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:25,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 11:23:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:25,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 11:23:25,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 11:23:25,436 INFO L87 Difference]: Start difference. First operand 771 states and 864 transitions. Second operand has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 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 11:23:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:26,443 INFO L93 Difference]: Finished difference Result 936 states and 1069 transitions. [2024-12-02 11:23:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 11:23:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 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 528 [2024-12-02 11:23:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:26,447 INFO L225 Difference]: With dead ends: 936 [2024-12-02 11:23:26,447 INFO L226 Difference]: Without dead ends: 927 [2024-12-02 11:23:26,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1032 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=281, Invalid=2169, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 11:23:26,448 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 102 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:26,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 456 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:23:26,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-12-02 11:23:26,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 775. [2024-12-02 11:23:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 1.1214470284237725) internal successors, (868), 774 states have internal predecessors, (868), 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 11:23:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 868 transitions. [2024-12-02 11:23:26,477 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 868 transitions. Word has length 528 [2024-12-02 11:23:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:26,478 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 868 transitions. [2024-12-02 11:23:26,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 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 11:23:26,478 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 868 transitions. [2024-12-02 11:23:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-12-02 11:23:26,480 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:26,481 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 30, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:26,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 11:23:26,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 11:23:26,681 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:26,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:26,682 INFO L85 PathProgramCache]: Analyzing trace with hash 808501891, now seen corresponding path program 10 times [2024-12-02 11:23:26,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:26,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890298821] [2024-12-02 11:23:26,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:23:26,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:26,864 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:23:26,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 37907 backedges. 1 proven. 581 refuted. 0 times theorem prover too weak. 37325 trivial. 0 not checked. [2024-12-02 11:23:30,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890298821] [2024-12-02 11:23:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890298821] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:30,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128819089] [2024-12-02 11:23:30,339 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 11:23:30,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:30,341 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:30,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 11:23:30,812 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 11:23:30,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:30,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 11:23:30,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:33,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:23:33,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 22 [2024-12-02 11:23:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 37907 backedges. 1 proven. 556 refuted. 0 times theorem prover too weak. 37350 trivial. 0 not checked. [2024-12-02 11:23:33,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:35,395 INFO L349 Elim1Store]: treesize reduction 13, result has 87.6 percent of original size [2024-12-02 11:23:35,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 112 [2024-12-02 11:23:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 37907 backedges. 462 proven. 95 refuted. 0 times theorem prover too weak. 37350 trivial. 0 not checked. [2024-12-02 11:23:35,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128819089] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:23:35,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:23:35,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 24] total 58 [2024-12-02 11:23:35,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787966473] [2024-12-02 11:23:35,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:35,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 11:23:35,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:35,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 11:23:35,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2848, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 11:23:35,704 INFO L87 Difference]: Start difference. First operand 775 states and 868 transitions. Second operand has 58 states, 58 states have (on average 2.3448275862068964) internal successors, (136), 58 states have internal predecessors, (136), 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 11:23:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:40,502 INFO L93 Difference]: Finished difference Result 1485 states and 1749 transitions. [2024-12-02 11:23:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-12-02 11:23:40,503 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.3448275862068964) internal successors, (136), 58 states have internal predecessors, (136), 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 532 [2024-12-02 11:23:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:40,507 INFO L225 Difference]: With dead ends: 1485 [2024-12-02 11:23:40,507 INFO L226 Difference]: Without dead ends: 1094 [2024-12-02 11:23:40,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1030 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1576, Invalid=8726, Unknown=0, NotChecked=0, Total=10302 [2024-12-02 11:23:40,509 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 108 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 3425 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:40,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 506 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3425 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 11:23:40,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-12-02 11:23:40,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 911. [2024-12-02 11:23:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.1362637362637362) internal successors, (1034), 910 states have internal predecessors, (1034), 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 11:23:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1034 transitions. [2024-12-02 11:23:40,580 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1034 transitions. Word has length 532 [2024-12-02 11:23:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:40,581 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1034 transitions. [2024-12-02 11:23:40,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.3448275862068964) internal successors, (136), 58 states have internal predecessors, (136), 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 11:23:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1034 transitions. [2024-12-02 11:23:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-12-02 11:23:40,586 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:40,586 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 30, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:40,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 11:23:40,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 11:23:40,787 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:40,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1445200457, now seen corresponding path program 11 times [2024-12-02 11:23:40,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:40,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116828233] [2024-12-02 11:23:40,788 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 11:23:40,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:52,083 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 190 check-sat command(s) [2024-12-02 11:23:52,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:23:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 37926 backedges. 1 proven. 1770 refuted. 0 times theorem prover too weak. 36155 trivial. 0 not checked. [2024-12-02 11:23:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116828233] [2024-12-02 11:23:53,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116828233] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105839539] [2024-12-02 11:23:53,816 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 11:23:53,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:53,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:53,818 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:53,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c80f1212-199b-4a4e-bcfc-b1f9d5e6d49f/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process