./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.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_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/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_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/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_efbb86f5-6571-411a-abc8-1964a31acf47/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 26d5f48c3aaa4f87ce3b022933cd3bb4d238eb5e6d3164b471af63fd7f3cd88c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:53:22,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:53:22,672 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:53:22,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:53:22,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:53:22,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:53:22,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:53:22,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:53:22,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:53:22,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:53:22,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:53:22,697 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:53:22,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:53:22,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:53:22,697 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:53:22,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:53:22,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:53:22,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:53:22,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:53:22,698 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:53:22,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:53:22,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:53:22,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:53:22,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:53:22,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:53:22,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:53:22,700 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_efbb86f5-6571-411a-abc8-1964a31acf47/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 -> 26d5f48c3aaa4f87ce3b022933cd3bb4d238eb5e6d3164b471af63fd7f3cd88c [2024-12-02 11:53:22,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:53:22,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:53:22,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:53:22,939 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:53:22,940 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:53:22,941 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2024-12-02 11:53:25,600 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/data/a515cd9f1/96271356e2dd458e849209e58053fe1d/FLAGc4e19028a [2024-12-02 11:53:25,786 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:53:25,786 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i [2024-12-02 11:53:25,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/data/a515cd9f1/96271356e2dd458e849209e58053fe1d/FLAGc4e19028a [2024-12-02 11:53:25,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/data/a515cd9f1/96271356e2dd458e849209e58053fe1d [2024-12-02 11:53:25,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:53:25,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:53:25,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:53:25,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:53:25,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:53:25,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:53:25" (1/1) ... [2024-12-02 11:53:25,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d7fb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:25, skipping insertion in model container [2024-12-02 11:53:25,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:53:25" (1/1) ... [2024-12-02 11:53:25,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:53:25,934 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_efbb86f5-6571-411a-abc8-1964a31acf47/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i[916,929] [2024-12-02 11:53:25,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:53:25,991 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:53:25,999 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_efbb86f5-6571-411a-abc8-1964a31acf47/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-12.i[916,929] [2024-12-02 11:53:26,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:53:26,046 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:53:26,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26 WrapperNode [2024-12-02 11:53:26,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:53:26,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:53:26,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:53:26,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:53:26,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,063 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,096 INFO L138 Inliner]: procedures = 27, calls = 151, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2024-12-02 11:53:26,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:53:26,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:53:26,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:53:26,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:53:26,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,108 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,127 INFO L175 MemorySlicer]: Split 124 memory accesses to 2 slices as follows [2, 122]. 98 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 26 writes are split as follows [0, 26]. [2024-12-02 11:53:26,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,145 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:53:26,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:53:26,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:53:26,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:53:26,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (1/1) ... [2024-12-02 11:53:26,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:53:26,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:26,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:53:26,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:53:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:53:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 11:53:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:53:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 11:53:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:53:26,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:53:26,299 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:53:26,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:53:26,715 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-12-02 11:53:26,715 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:53:26,726 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:53:26,726 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:53:26,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:53:26 BoogieIcfgContainer [2024-12-02 11:53:26,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:53:26,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:53:26,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:53:26,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:53:26,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:53:25" (1/3) ... [2024-12-02 11:53:26,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d02ff32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:53:26, skipping insertion in model container [2024-12-02 11:53:26,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:53:26" (2/3) ... [2024-12-02 11:53:26,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d02ff32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:53:26, skipping insertion in model container [2024-12-02 11:53:26,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:53:26" (3/3) ... [2024-12-02 11:53:26,734 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-12.i [2024-12-02 11:53:26,745 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:53:26,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-s_file-12.i that has 2 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:53:26,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:53:26,796 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;@5467ed7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:53:26,796 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:53:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 11:53:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:53:26,807 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:26,808 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:26,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:26,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:26,812 INFO L85 PathProgramCache]: Analyzing trace with hash -7132500, now seen corresponding path program 1 times [2024-12-02 11:53:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:26,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136915201] [2024-12-02 11:53:26,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 11:53:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136915201] [2024-12-02 11:53:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136915201] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802145345] [2024-12-02 11:53:27,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:27,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:27,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:27,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:27,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:53:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:27,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:53:27,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-12-02 11:53:27,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:53:27,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802145345] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:27,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:53:27,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:53:27,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853694531] [2024-12-02 11:53:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:27,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:53:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:27,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:53:27,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:53:27,251 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:53:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:27,274 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-12-02 11:53:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:53:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-12-02 11:53:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:27,279 INFO L225 Difference]: With dead ends: 183 [2024-12-02 11:53:27,280 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 11:53:27,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:53:27,285 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:27,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:53:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 11:53:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-12-02 11:53:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 11:53:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-12-02 11:53:27,314 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-12-02 11:53:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:27,315 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-12-02 11:53:27,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:53:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-12-02 11:53:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 11:53:27,317 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:27,317 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:27,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:53:27,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:53:27,518 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:27,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197964, now seen corresponding path program 1 times [2024-12-02 11:53:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:27,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849464991] [2024-12-02 11:53:27,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-02 11:53:27,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:27,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849464991] [2024-12-02 11:53:27,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849464991] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:27,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866381866] [2024-12-02 11:53:27,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:27,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:27,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:27,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:27,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:53:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:28,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 11:53:28,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:53:28,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:53:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866381866] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:28,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:53:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-12-02 11:53:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173497559] [2024-12-02 11:53:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:28,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:53:28,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:28,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:53:28,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:53:28,130 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:28,164 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-12-02 11:53:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:53:28,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-12-02 11:53:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:28,166 INFO L225 Difference]: With dead ends: 173 [2024-12-02 11:53:28,166 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 11:53:28,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:53:28,167 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:28,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:53:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 11:53:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-12-02 11:53:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 11:53:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-12-02 11:53:28,178 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-12-02 11:53:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:28,180 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-12-02 11:53:28,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-12-02 11:53:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 11:53:28,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:28,183 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:28,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:53:28,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:28,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:28,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1498089034, now seen corresponding path program 1 times [2024-12-02 11:53:28,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576536259] [2024-12-02 11:53:28,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-02 11:53:28,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576536259] [2024-12-02 11:53:28,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576536259] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:28,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099901464] [2024-12-02 11:53:28,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:28,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:28,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:28,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:28,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:53:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:28,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 11:53:28,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:53:28,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:53:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099901464] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:53:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-12-02 11:53:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948352978] [2024-12-02 11:53:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:28,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:53:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:28,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:53:28,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:53:28,780 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:28,825 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-12-02 11:53:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:53:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-12-02 11:53:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:28,827 INFO L225 Difference]: With dead ends: 176 [2024-12-02 11:53:28,827 INFO L226 Difference]: Without dead ends: 91 [2024-12-02 11:53:28,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:53:28,829 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:28,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:53:28,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-12-02 11:53:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-12-02 11:53:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-12-02 11:53:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-12-02 11:53:28,839 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-12-02 11:53:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:28,840 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-12-02 11:53:28,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-12-02 11:53:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 11:53:28,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:28,842 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:28,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:53:29,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:29,043 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:29,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash -183251538, now seen corresponding path program 1 times [2024-12-02 11:53:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798414199] [2024-12-02 11:53:29,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:53:29,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:29,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798414199] [2024-12-02 11:53:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798414199] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:29,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:53:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:53:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121445139] [2024-12-02 11:53:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:29,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:53:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:29,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:53:29,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:53:29,930 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:53:30,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:30,548 INFO L93 Difference]: Finished difference Result 165 states and 222 transitions. [2024-12-02 11:53:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:53:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 121 [2024-12-02 11:53:30,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:30,550 INFO L225 Difference]: With dead ends: 165 [2024-12-02 11:53:30,550 INFO L226 Difference]: Without dead ends: 163 [2024-12-02 11:53:30,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:53:30,551 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 74 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:30,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 846 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:53:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-12-02 11:53:30,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2024-12-02 11:53:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 128 states have internal predecessors, (158), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:53:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 218 transitions. [2024-12-02 11:53:30,573 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 218 transitions. Word has length 121 [2024-12-02 11:53:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:30,573 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 218 transitions. [2024-12-02 11:53:30,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.285714285714286) internal successors, (44), 9 states have internal predecessors, (44), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:53:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 218 transitions. [2024-12-02 11:53:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 11:53:30,576 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:30,576 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:30,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:53:30,576 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:30,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:30,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1588599541, now seen corresponding path program 1 times [2024-12-02 11:53:30,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:30,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251045475] [2024-12-02 11:53:30,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:30,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-12-02 11:53:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251045475] [2024-12-02 11:53:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251045475] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590450380] [2024-12-02 11:53:32,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:32,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:32,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:32,467 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:32,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:53:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:32,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 11:53:32,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:32,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:32,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:32,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:32,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:33,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:53:33,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 40 [2024-12-02 11:53:33,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:53:33,781 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 72 treesize of output 36 [2024-12-02 11:53:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-12-02 11:53:33,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:53:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-12-02 11:53:35,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590450380] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:53:35,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:53:35,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 50 [2024-12-02 11:53:35,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530315787] [2024-12-02 11:53:35,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:53:35,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-12-02 11:53:35,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:35,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-12-02 11:53:35,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=2047, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 11:53:35,027 INFO L87 Difference]: Start difference. First operand 160 states and 218 transitions. Second operand has 50 states, 40 states have (on average 2.9) internal successors, (116), 46 states have internal predecessors, (116), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2024-12-02 11:53:38,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:38,246 INFO L93 Difference]: Finished difference Result 288 states and 358 transitions. [2024-12-02 11:53:38,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 11:53:38,247 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 40 states have (on average 2.9) internal successors, (116), 46 states have internal predecessors, (116), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) Word has length 122 [2024-12-02 11:53:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:38,250 INFO L225 Difference]: With dead ends: 288 [2024-12-02 11:53:38,250 INFO L226 Difference]: Without dead ends: 286 [2024-12-02 11:53:38,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 216 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1369, Invalid=5941, Unknown=0, NotChecked=0, Total=7310 [2024-12-02 11:53:38,254 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 762 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:38,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1140 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 11:53:38,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-12-02 11:53:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 188. [2024-12-02 11:53:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 148 states have (on average 1.2094594594594594) internal successors, (179), 149 states have internal predecessors, (179), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:53:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 239 transitions. [2024-12-02 11:53:38,280 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 239 transitions. Word has length 122 [2024-12-02 11:53:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:38,281 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 239 transitions. [2024-12-02 11:53:38,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 40 states have (on average 2.9) internal successors, (116), 46 states have internal predecessors, (116), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2024-12-02 11:53:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 239 transitions. [2024-12-02 11:53:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-12-02 11:53:38,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:38,282 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:38,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 11:53:38,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:38,483 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:38,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1589190883, now seen corresponding path program 1 times [2024-12-02 11:53:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:38,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900948687] [2024-12-02 11:53:38,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:38,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 108 proven. 36 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-12-02 11:53:39,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:39,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900948687] [2024-12-02 11:53:39,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900948687] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:39,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942308707] [2024-12-02 11:53:39,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:39,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:39,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:39,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:39,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:53:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:39,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 11:53:39,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:39,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:53:39,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:39,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:39,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:40,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-02 11:53:40,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:53:40,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 44 treesize of output 40 [2024-12-02 11:53:40,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:53:40,570 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 72 treesize of output 36 [2024-12-02 11:53:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-12-02 11:53:40,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:53:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 114 proven. 48 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-12-02 11:53:41,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942308707] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:53:41,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:53:41,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 26] total 52 [2024-12-02 11:53:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823494598] [2024-12-02 11:53:41,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:53:41,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 11:53:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:41,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 11:53:41,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 11:53:41,559 INFO L87 Difference]: Start difference. First operand 188 states and 239 transitions. Second operand has 52 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 48 states have internal predecessors, (118), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2024-12-02 11:53:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:43,497 INFO L93 Difference]: Finished difference Result 268 states and 334 transitions. [2024-12-02 11:53:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 11:53:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 48 states have internal predecessors, (118), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) Word has length 123 [2024-12-02 11:53:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:43,500 INFO L225 Difference]: With dead ends: 268 [2024-12-02 11:53:43,500 INFO L226 Difference]: Without dead ends: 266 [2024-12-02 11:53:43,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 216 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1122, Invalid=4730, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 11:53:43,502 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 1161 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:43,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 738 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 11:53:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-12-02 11:53:43,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 189. [2024-12-02 11:53:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 150 states have internal predecessors, (180), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:53:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2024-12-02 11:53:43,520 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 123 [2024-12-02 11:53:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:43,520 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2024-12-02 11:53:43,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 2.8095238095238093) internal successors, (118), 48 states have internal predecessors, (118), 12 states have call successors, (29), 4 states have call predecessors, (29), 10 states have return successors, (29), 9 states have call predecessors, (29), 12 states have call successors, (29) [2024-12-02 11:53:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2024-12-02 11:53:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 11:53:43,522 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:43,522 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:43,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:53:43,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 11:53:43,723 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:43,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1238954064, now seen corresponding path program 1 times [2024-12-02 11:53:43,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:43,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120708969] [2024-12-02 11:53:43,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:43,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-02 11:53:44,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120708969] [2024-12-02 11:53:44,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120708969] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723777949] [2024-12-02 11:53:44,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:44,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:44,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:44,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:44,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:53:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:44,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 11:53:44,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:44,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:53:44,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:53:44,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:53:44,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:53:44,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:53:44,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2024-12-02 11:53:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-12-02 11:53:44,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:53:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-02 11:53:44,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723777949] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:53:44,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:53:44,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-12-02 11:53:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958975853] [2024-12-02 11:53:44,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:53:44,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:53:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:44,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:53:44,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:53:44,888 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-12-02 11:53:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:45,244 INFO L93 Difference]: Finished difference Result 391 states and 491 transitions. [2024-12-02 11:53:45,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:53:45,245 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 124 [2024-12-02 11:53:45,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:45,246 INFO L225 Difference]: With dead ends: 391 [2024-12-02 11:53:45,246 INFO L226 Difference]: Without dead ends: 205 [2024-12-02 11:53:45,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 245 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:53:45,248 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 192 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:45,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 237 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:53:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-12-02 11:53:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 197. [2024-12-02 11:53:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 156 states have internal predecessors, (185), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:53:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 245 transitions. [2024-12-02 11:53:45,274 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 245 transitions. Word has length 124 [2024-12-02 11:53:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:45,274 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 245 transitions. [2024-12-02 11:53:45,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-12-02 11:53:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 245 transitions. [2024-12-02 11:53:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 11:53:45,275 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:45,276 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:45,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:53:45,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 11:53:45,476 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:45,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1094624298, now seen corresponding path program 1 times [2024-12-02 11:53:45,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:45,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384312589] [2024-12-02 11:53:45,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:45,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:53:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384312589] [2024-12-02 11:53:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384312589] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:45,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:53:45,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:53:45,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741025241] [2024-12-02 11:53:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:45,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:53:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:45,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:53:45,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:53:45,682 INFO L87 Difference]: Start difference. First operand 197 states and 245 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:45,889 INFO L93 Difference]: Finished difference Result 453 states and 563 transitions. [2024-12-02 11:53:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:53:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-12-02 11:53:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:45,892 INFO L225 Difference]: With dead ends: 453 [2024-12-02 11:53:45,892 INFO L226 Difference]: Without dead ends: 259 [2024-12-02 11:53:45,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:53:45,893 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 30 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:45,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 329 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:53:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-12-02 11:53:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2024-12-02 11:53:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 176 states have (on average 1.1875) internal successors, (209), 177 states have internal predecessors, (209), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:53:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 269 transitions. [2024-12-02 11:53:45,928 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 269 transitions. Word has length 124 [2024-12-02 11:53:45,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:45,928 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 269 transitions. [2024-12-02 11:53:45,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:45,929 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 269 transitions. [2024-12-02 11:53:45,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 11:53:45,930 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:45,930 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:45,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:53:45,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:45,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2058585282, now seen corresponding path program 1 times [2024-12-02 11:53:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111959592] [2024-12-02 11:53:45,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-02 11:53:46,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111959592] [2024-12-02 11:53:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111959592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:53:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326846412] [2024-12-02 11:53:46,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:46,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:46,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:46,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:53:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:46,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 11:53:46,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:46,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 11:53:46,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 11:53:46,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 11:53:46,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 11:53:47,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 11:53:47,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 11:53:47,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-02 11:53:47,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-12-02 11:53:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-12-02 11:53:47,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:53:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-12-02 11:53:47,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326846412] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:53:47,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:53:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-12-02 11:53:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755589469] [2024-12-02 11:53:47,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:53:47,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 11:53:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:47,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 11:53:47,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:53:47,427 INFO L87 Difference]: Start difference. First operand 218 states and 269 transitions. Second operand has 15 states, 12 states have (on average 8.416666666666666) internal successors, (101), 15 states have internal predecessors, (101), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) [2024-12-02 11:53:47,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:47,811 INFO L93 Difference]: Finished difference Result 441 states and 543 transitions. [2024-12-02 11:53:47,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 11:53:47,811 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 8.416666666666666) internal successors, (101), 15 states have internal predecessors, (101), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) Word has length 125 [2024-12-02 11:53:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:47,812 INFO L225 Difference]: With dead ends: 441 [2024-12-02 11:53:47,812 INFO L226 Difference]: Without dead ends: 226 [2024-12-02 11:53:47,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 243 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-12-02 11:53:47,813 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 107 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:47,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 252 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:53:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-12-02 11:53:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2024-12-02 11:53:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 176 states have (on average 1.1761363636363635) internal successors, (207), 177 states have internal predecessors, (207), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 11:53:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 267 transitions. [2024-12-02 11:53:47,835 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 267 transitions. Word has length 125 [2024-12-02 11:53:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:47,836 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 267 transitions. [2024-12-02 11:53:47,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 8.416666666666666) internal successors, (101), 15 states have internal predecessors, (101), 7 states have call successors, (33), 3 states have call predecessors, (33), 6 states have return successors, (33), 4 states have call predecessors, (33), 7 states have call successors, (33) [2024-12-02 11:53:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 267 transitions. [2024-12-02 11:53:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 11:53:47,837 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:47,837 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:47,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:53:48,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:48,038 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:48,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash -859819254, now seen corresponding path program 1 times [2024-12-02 11:53:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451083215] [2024-12-02 11:53:48,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:53:48,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986872255] [2024-12-02 11:53:48,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:48,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:48,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:48,099 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:48,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:53:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:48,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:53:48,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:48,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2024-12-02 11:53:48,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:48,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:49,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:49,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:49,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:50,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:50,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:50,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:53:51,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:53:51,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451083215] [2024-12-02 11:53:51,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:53:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986872255] [2024-12-02 11:53:51,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986872255] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:51,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:53:51,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:53:51,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105787957] [2024-12-02 11:53:51,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:51,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:53:51,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:51,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:53:51,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:53:51,511 INFO L87 Difference]: Start difference. First operand 218 states and 267 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:53:53,445 INFO L93 Difference]: Finished difference Result 503 states and 618 transitions. [2024-12-02 11:53:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:53:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2024-12-02 11:53:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:53:53,448 INFO L225 Difference]: With dead ends: 503 [2024-12-02 11:53:53,448 INFO L226 Difference]: Without dead ends: 288 [2024-12-02 11:53:53,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:53:53,450 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 11 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:53:53,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 162 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 11:53:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-12-02 11:53:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 281. [2024-12-02 11:53:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 217 states have (on average 1.152073732718894) internal successors, (250), 218 states have internal predecessors, (250), 46 states have call successors, (46), 17 states have call predecessors, (46), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 11:53:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 342 transitions. [2024-12-02 11:53:53,475 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 342 transitions. Word has length 126 [2024-12-02 11:53:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:53:53,475 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 342 transitions. [2024-12-02 11:53:53,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:53:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 342 transitions. [2024-12-02 11:53:53,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 11:53:53,475 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:53:53,476 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:53:53,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 11:53:53,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 11:53:53,676 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:53:53,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:53:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1365477640, now seen corresponding path program 1 times [2024-12-02 11:53:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:53:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299902130] [2024-12-02 11:53:53,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:53,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:53:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:53:53,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041340752] [2024-12-02 11:53:53,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:53:53,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:53:53,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:53:53,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:53:53,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:53:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:53:53,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 11:53:53,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:53:53,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2024-12-02 11:53:54,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:54,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:54,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:55,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:55,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:56,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:56,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:56,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:57,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 108 [2024-12-02 11:53:57,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 117 [2024-12-02 11:53:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:53:57,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:53:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:53:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299902130] [2024-12-02 11:53:57,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:53:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041340752] [2024-12-02 11:53:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041340752] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:53:57,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:53:57,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:53:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527822483] [2024-12-02 11:53:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:53:57,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:53:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:53:57,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:53:57,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:53:57,675 INFO L87 Difference]: Start difference. First operand 281 states and 342 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:01,817 INFO L93 Difference]: Finished difference Result 664 states and 809 transitions. [2024-12-02 11:54:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:01,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-12-02 11:54:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:01,820 INFO L225 Difference]: With dead ends: 664 [2024-12-02 11:54:01,820 INFO L226 Difference]: Without dead ends: 449 [2024-12-02 11:54:01,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:01,821 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 88 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:01,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 267 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 11:54:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-12-02 11:54:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 433. [2024-12-02 11:54:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 328 states have (on average 1.1219512195121952) internal successors, (368), 330 states have internal predecessors, (368), 76 states have call successors, (76), 28 states have call predecessors, (76), 28 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2024-12-02 11:54:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 520 transitions. [2024-12-02 11:54:01,889 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 520 transitions. Word has length 127 [2024-12-02 11:54:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:01,890 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 520 transitions. [2024-12-02 11:54:01,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 520 transitions. [2024-12-02 11:54:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:01,891 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:01,891 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:01,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:54:02,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:02,092 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:02,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -204876201, now seen corresponding path program 1 times [2024-12-02 11:54:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:02,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720395131] [2024-12-02 11:54:02,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:02,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:02,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:02,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720395131] [2024-12-02 11:54:02,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720395131] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:02,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:02,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:54:02,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328840755] [2024-12-02 11:54:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:02,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:54:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:02,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:54:02,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:54:02,920 INFO L87 Difference]: Start difference. First operand 433 states and 520 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:03,635 INFO L93 Difference]: Finished difference Result 965 states and 1163 transitions. [2024-12-02 11:54:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:54:03,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:03,640 INFO L225 Difference]: With dead ends: 965 [2024-12-02 11:54:03,640 INFO L226 Difference]: Without dead ends: 750 [2024-12-02 11:54:03,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:54:03,641 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 136 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:03,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 570 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:54:03,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-12-02 11:54:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 742. [2024-12-02 11:54:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 571 states have (on average 1.1401050788091067) internal successors, (651), 577 states have internal predecessors, (651), 120 states have call successors, (120), 50 states have call predecessors, (120), 50 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 891 transitions. [2024-12-02 11:54:03,758 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 891 transitions. Word has length 129 [2024-12-02 11:54:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:03,758 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 891 transitions. [2024-12-02 11:54:03,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 891 transitions. [2024-12-02 11:54:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:03,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:03,760 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:03,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:54:03,760 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:03,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash -597903211, now seen corresponding path program 1 times [2024-12-02 11:54:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:03,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584675466] [2024-12-02 11:54:03,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:03,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:04,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584675466] [2024-12-02 11:54:04,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584675466] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:04,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:04,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:54:04,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289565606] [2024-12-02 11:54:04,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:04,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:54:04,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:04,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:54:04,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:54:04,515 INFO L87 Difference]: Start difference. First operand 742 states and 891 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:05,104 INFO L93 Difference]: Finished difference Result 1516 states and 1830 transitions. [2024-12-02 11:54:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:54:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:05,108 INFO L225 Difference]: With dead ends: 1516 [2024-12-02 11:54:05,108 INFO L226 Difference]: Without dead ends: 1000 [2024-12-02 11:54:05,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:54:05,110 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 68 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:05,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 531 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:54:05,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-12-02 11:54:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 768. [2024-12-02 11:54:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 597 states have (on average 1.1457286432160805) internal successors, (684), 603 states have internal predecessors, (684), 120 states have call successors, (120), 50 states have call predecessors, (120), 50 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 924 transitions. [2024-12-02 11:54:05,180 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 924 transitions. Word has length 129 [2024-12-02 11:54:05,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:05,180 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 924 transitions. [2024-12-02 11:54:05,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 924 transitions. [2024-12-02 11:54:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:05,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:05,182 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:05,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 11:54:05,182 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:05,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash -53411776, now seen corresponding path program 1 times [2024-12-02 11:54:05,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:05,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748435306] [2024-12-02 11:54:05,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:05,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:05,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748435306] [2024-12-02 11:54:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748435306] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:05,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:05,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:54:05,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378146971] [2024-12-02 11:54:05,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:05,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:05,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:05,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:05,698 INFO L87 Difference]: Start difference. First operand 768 states and 924 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:06,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:06,044 INFO L93 Difference]: Finished difference Result 1445 states and 1746 transitions. [2024-12-02 11:54:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:54:06,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-12-02 11:54:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:06,049 INFO L225 Difference]: With dead ends: 1445 [2024-12-02 11:54:06,049 INFO L226 Difference]: Without dead ends: 903 [2024-12-02 11:54:06,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:06,050 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 60 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:06,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 393 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:54:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-12-02 11:54:06,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 897. [2024-12-02 11:54:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 696 states have (on average 1.1422413793103448) internal successors, (795), 704 states have internal predecessors, (795), 140 states have call successors, (140), 60 states have call predecessors, (140), 60 states have return successors, (140), 132 states have call predecessors, (140), 140 states have call successors, (140) [2024-12-02 11:54:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1075 transitions. [2024-12-02 11:54:06,171 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1075 transitions. Word has length 129 [2024-12-02 11:54:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:06,171 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1075 transitions. [2024-12-02 11:54:06,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1075 transitions. [2024-12-02 11:54:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:06,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:06,172 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:06,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 11:54:06,173 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:06,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -446438786, now seen corresponding path program 1 times [2024-12-02 11:54:06,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:06,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341898988] [2024-12-02 11:54:06,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341898988] [2024-12-02 11:54:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341898988] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:06,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:06,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:54:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134498194] [2024-12-02 11:54:06,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:06,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:54:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:06,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:54:06,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:06,699 INFO L87 Difference]: Start difference. First operand 897 states and 1075 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:07,202 INFO L93 Difference]: Finished difference Result 1447 states and 1742 transitions. [2024-12-02 11:54:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:07,205 INFO L225 Difference]: With dead ends: 1447 [2024-12-02 11:54:07,205 INFO L226 Difference]: Without dead ends: 776 [2024-12-02 11:54:07,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:07,207 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 73 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:07,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 546 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:54:07,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-12-02 11:54:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 750. [2024-12-02 11:54:07,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 577 states have (on average 1.1351819757365684) internal successors, (655), 583 states have internal predecessors, (655), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 895 transitions. [2024-12-02 11:54:07,330 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 895 transitions. Word has length 129 [2024-12-02 11:54:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:07,330 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 895 transitions. [2024-12-02 11:54:07,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:07,330 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 895 transitions. [2024-12-02 11:54:07,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:07,331 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:07,331 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:07,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 11:54:07,331 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:07,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -463041639, now seen corresponding path program 1 times [2024-12-02 11:54:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:07,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172534588] [2024-12-02 11:54:07,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:08,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:08,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172534588] [2024-12-02 11:54:08,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172534588] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:08,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:08,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 11:54:08,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119354528] [2024-12-02 11:54:08,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:08,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:54:08,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:08,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:54:08,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:54:08,234 INFO L87 Difference]: Start difference. First operand 750 states and 895 transitions. Second operand has 10 states, 7 states have (on average 7.428571428571429) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 11:54:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:08,835 INFO L93 Difference]: Finished difference Result 1417 states and 1697 transitions. [2024-12-02 11:54:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 11:54:08,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 7.428571428571429) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-12-02 11:54:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:08,840 INFO L225 Difference]: With dead ends: 1417 [2024-12-02 11:54:08,840 INFO L226 Difference]: Without dead ends: 893 [2024-12-02 11:54:08,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-12-02 11:54:08,841 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 62 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:08,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 578 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:54:08,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-12-02 11:54:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 776. [2024-12-02 11:54:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 603 states have (on average 1.1376451077943615) internal successors, (686), 609 states have internal predecessors, (686), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 926 transitions. [2024-12-02 11:54:08,970 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 926 transitions. Word has length 129 [2024-12-02 11:54:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:08,971 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 926 transitions. [2024-12-02 11:54:08,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 7.428571428571429) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-12-02 11:54:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 926 transitions. [2024-12-02 11:54:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:08,972 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:08,972 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:08,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:54:08,972 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:08,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -311577214, now seen corresponding path program 1 times [2024-12-02 11:54:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:08,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230813953] [2024-12-02 11:54:08,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:08,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230813953] [2024-12-02 11:54:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230813953] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:11,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 11:54:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370097237] [2024-12-02 11:54:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:11,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 11:54:11,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:11,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 11:54:11,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-12-02 11:54:11,951 INFO L87 Difference]: Start difference. First operand 776 states and 926 transitions. Second operand has 19 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:14,745 INFO L93 Difference]: Finished difference Result 1480 states and 1770 transitions. [2024-12-02 11:54:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 11:54:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:14,748 INFO L225 Difference]: With dead ends: 1480 [2024-12-02 11:54:14,748 INFO L226 Difference]: Without dead ends: 930 [2024-12-02 11:54:14,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2024-12-02 11:54:14,749 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 68 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:14,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1471 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 11:54:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-12-02 11:54:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 809. [2024-12-02 11:54:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 636 states have (on average 1.1415094339622642) internal successors, (726), 642 states have internal predecessors, (726), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 966 transitions. [2024-12-02 11:54:14,841 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 966 transitions. Word has length 129 [2024-12-02 11:54:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:14,842 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 966 transitions. [2024-12-02 11:54:14,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 966 transitions. [2024-12-02 11:54:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:14,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:14,843 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:14,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 11:54:14,844 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:14,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -704604224, now seen corresponding path program 1 times [2024-12-02 11:54:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:14,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41332210] [2024-12-02 11:54:14,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41332210] [2024-12-02 11:54:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41332210] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:15,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:15,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:54:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45453888] [2024-12-02 11:54:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:15,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:54:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:15,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:54:15,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:15,298 INFO L87 Difference]: Start difference. First operand 809 states and 966 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:15,971 INFO L93 Difference]: Finished difference Result 1644 states and 1958 transitions. [2024-12-02 11:54:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:54:15,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-12-02 11:54:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:15,974 INFO L225 Difference]: With dead ends: 1644 [2024-12-02 11:54:15,974 INFO L226 Difference]: Without dead ends: 1061 [2024-12-02 11:54:15,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:54:15,975 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 138 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:15,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 530 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:54:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-12-02 11:54:16,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 791. [2024-12-02 11:54:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 618 states have (on average 1.1262135922330097) internal successors, (696), 624 states have internal predecessors, (696), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 936 transitions. [2024-12-02 11:54:16,054 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 936 transitions. Word has length 129 [2024-12-02 11:54:16,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:16,055 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 936 transitions. [2024-12-02 11:54:16,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 936 transitions. [2024-12-02 11:54:16,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:16,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:16,056 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:16,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 11:54:16,056 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:16,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash -445590720, now seen corresponding path program 1 times [2024-12-02 11:54:16,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:16,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735347448] [2024-12-02 11:54:16,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:16,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:16,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735347448] [2024-12-02 11:54:16,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735347448] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:16,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:16,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464361477] [2024-12-02 11:54:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:16,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:16,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:16,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:16,214 INFO L87 Difference]: Start difference. First operand 791 states and 936 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:16,598 INFO L93 Difference]: Finished difference Result 1462 states and 1734 transitions. [2024-12-02 11:54:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-12-02 11:54:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:16,601 INFO L225 Difference]: With dead ends: 1462 [2024-12-02 11:54:16,601 INFO L226 Difference]: Without dead ends: 897 [2024-12-02 11:54:16,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:16,602 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 81 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:16,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 411 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:54:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-12-02 11:54:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 764. [2024-12-02 11:54:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 591 states have (on average 1.1218274111675126) internal successors, (663), 597 states have internal predecessors, (663), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 903 transitions. [2024-12-02 11:54:16,679 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 903 transitions. Word has length 129 [2024-12-02 11:54:16,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:16,680 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 903 transitions. [2024-12-02 11:54:16,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:16,680 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 903 transitions. [2024-12-02 11:54:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:16,680 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:16,681 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:16,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 11:54:16,681 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:16,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -957911696, now seen corresponding path program 1 times [2024-12-02 11:54:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720693524] [2024-12-02 11:54:16,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720693524] [2024-12-02 11:54:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720693524] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:17,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 11:54:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195936945] [2024-12-02 11:54:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:17,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 11:54:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:17,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 11:54:17,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:54:17,652 INFO L87 Difference]: Start difference. First operand 764 states and 903 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:18,858 INFO L93 Difference]: Finished difference Result 1719 states and 2036 transitions. [2024-12-02 11:54:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 11:54:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:18,861 INFO L225 Difference]: With dead ends: 1719 [2024-12-02 11:54:18,861 INFO L226 Difference]: Without dead ends: 1181 [2024-12-02 11:54:18,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-12-02 11:54:18,862 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 75 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:18,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1540 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:54:18,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2024-12-02 11:54:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 834. [2024-12-02 11:54:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 661 states have (on average 1.1391830559757943) internal successors, (753), 667 states have internal predecessors, (753), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 993 transitions. [2024-12-02 11:54:18,947 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 993 transitions. Word has length 129 [2024-12-02 11:54:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:18,947 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 993 transitions. [2024-12-02 11:54:18,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 993 transitions. [2024-12-02 11:54:18,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:18,948 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:18,948 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:18,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 11:54:18,949 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:18,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:18,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1350938706, now seen corresponding path program 1 times [2024-12-02 11:54:18,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:18,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835478144] [2024-12-02 11:54:18,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:19,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:19,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835478144] [2024-12-02 11:54:19,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835478144] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:19,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:19,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:54:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265956745] [2024-12-02 11:54:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:19,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:54:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:19,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:54:19,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:19,321 INFO L87 Difference]: Start difference. First operand 834 states and 993 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:20,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:20,091 INFO L93 Difference]: Finished difference Result 1567 states and 1865 transitions. [2024-12-02 11:54:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:54:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-12-02 11:54:20,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:20,095 INFO L225 Difference]: With dead ends: 1567 [2024-12-02 11:54:20,095 INFO L226 Difference]: Without dead ends: 959 [2024-12-02 11:54:20,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:54:20,097 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 125 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:20,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 560 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:54:20,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-12-02 11:54:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 834. [2024-12-02 11:54:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 661 states have (on average 1.1331316187594553) internal successors, (749), 667 states have internal predecessors, (749), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 989 transitions. [2024-12-02 11:54:20,215 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 989 transitions. Word has length 129 [2024-12-02 11:54:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:20,216 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 989 transitions. [2024-12-02 11:54:20,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 989 transitions. [2024-12-02 11:54:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:20,217 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:20,217 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:20,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 11:54:20,217 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:20,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:20,217 INFO L85 PathProgramCache]: Analyzing trace with hash -806447271, now seen corresponding path program 1 times [2024-12-02 11:54:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186621517] [2024-12-02 11:54:20,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:20,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186621517] [2024-12-02 11:54:21,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186621517] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:21,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:21,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 11:54:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107535658] [2024-12-02 11:54:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:21,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:54:21,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:21,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:54:21,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:54:21,016 INFO L87 Difference]: Start difference. First operand 834 states and 989 transitions. Second operand has 11 states, 7 states have (on average 7.428571428571429) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 11:54:21,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:21,823 INFO L93 Difference]: Finished difference Result 1569 states and 1864 transitions. [2024-12-02 11:54:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:54:21,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 7.428571428571429) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-12-02 11:54:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:21,827 INFO L225 Difference]: With dead ends: 1569 [2024-12-02 11:54:21,828 INFO L226 Difference]: Without dead ends: 961 [2024-12-02 11:54:21,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:54:21,829 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 61 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:21,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 689 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:54:21,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-12-02 11:54:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 838. [2024-12-02 11:54:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 665 states have (on average 1.132330827067669) internal successors, (753), 671 states have internal predecessors, (753), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 993 transitions. [2024-12-02 11:54:21,919 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 993 transitions. Word has length 129 [2024-12-02 11:54:21,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:21,919 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 993 transitions. [2024-12-02 11:54:21,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 7.428571428571429) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 11:54:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 993 transitions. [2024-12-02 11:54:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:21,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:21,926 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:21,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 11:54:21,926 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:21,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1091925202, now seen corresponding path program 1 times [2024-12-02 11:54:21,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:21,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17053779] [2024-12-02 11:54:21,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:21,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:22,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:22,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17053779] [2024-12-02 11:54:22,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17053779] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:22,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:54:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180515657] [2024-12-02 11:54:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:22,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:22,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:22,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:22,261 INFO L87 Difference]: Start difference. First operand 838 states and 993 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:22,718 INFO L93 Difference]: Finished difference Result 1550 states and 1836 transitions. [2024-12-02 11:54:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:54:22,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-12-02 11:54:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:22,721 INFO L225 Difference]: With dead ends: 1550 [2024-12-02 11:54:22,722 INFO L226 Difference]: Without dead ends: 938 [2024-12-02 11:54:22,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:22,723 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 78 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:22,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 496 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:54:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2024-12-02 11:54:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 811. [2024-12-02 11:54:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 638 states have (on average 1.128526645768025) internal successors, (720), 644 states have internal predecessors, (720), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 960 transitions. [2024-12-02 11:54:22,821 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 960 transitions. Word has length 129 [2024-12-02 11:54:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:22,821 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 960 transitions. [2024-12-02 11:54:22,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 960 transitions. [2024-12-02 11:54:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:22,822 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:22,822 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:22,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 11:54:22,822 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:22,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash -142836587, now seen corresponding path program 1 times [2024-12-02 11:54:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:22,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850737783] [2024-12-02 11:54:22,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:22,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:22,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:22,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850737783] [2024-12-02 11:54:22,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850737783] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:22,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:22,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987933487] [2024-12-02 11:54:22,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:22,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:22,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:22,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:22,966 INFO L87 Difference]: Start difference. First operand 811 states and 960 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:23,251 INFO L93 Difference]: Finished difference Result 1390 states and 1651 transitions. [2024-12-02 11:54:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:23,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-12-02 11:54:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:23,254 INFO L225 Difference]: With dead ends: 1390 [2024-12-02 11:54:23,254 INFO L226 Difference]: Without dead ends: 805 [2024-12-02 11:54:23,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:23,255 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 59 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:23,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 349 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:54:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-12-02 11:54:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 797. [2024-12-02 11:54:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 624 states have (on average 1.1217948717948718) internal successors, (700), 630 states have internal predecessors, (700), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 940 transitions. [2024-12-02 11:54:23,342 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 940 transitions. Word has length 129 [2024-12-02 11:54:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:23,342 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 940 transitions. [2024-12-02 11:54:23,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 940 transitions. [2024-12-02 11:54:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:23,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:23,344 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:23,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 11:54:23,344 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:23,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash -535863597, now seen corresponding path program 1 times [2024-12-02 11:54:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218767228] [2024-12-02 11:54:23,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218767228] [2024-12-02 11:54:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218767228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:23,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:23,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:54:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72065415] [2024-12-02 11:54:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:23,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:54:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:23,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:54:23,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:23,705 INFO L87 Difference]: Start difference. First operand 797 states and 940 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:24,244 INFO L93 Difference]: Finished difference Result 1614 states and 1899 transitions. [2024-12-02 11:54:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:24,248 INFO L225 Difference]: With dead ends: 1614 [2024-12-02 11:54:24,248 INFO L226 Difference]: Without dead ends: 1043 [2024-12-02 11:54:24,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:24,249 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 85 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:24,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 486 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:54:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-12-02 11:54:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 803. [2024-12-02 11:54:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 630 states have (on average 1.119047619047619) internal successors, (705), 636 states have internal predecessors, (705), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 945 transitions. [2024-12-02 11:54:24,347 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 945 transitions. Word has length 129 [2024-12-02 11:54:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:24,348 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 945 transitions. [2024-12-02 11:54:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 945 transitions. [2024-12-02 11:54:24,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:24,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:24,349 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:24,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 11:54:24,349 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:24,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash -669877103, now seen corresponding path program 1 times [2024-12-02 11:54:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924891643] [2024-12-02 11:54:24,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:24,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924891643] [2024-12-02 11:54:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924891643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 11:54:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349290876] [2024-12-02 11:54:24,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:24,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 11:54:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:24,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 11:54:24,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:54:24,944 INFO L87 Difference]: Start difference. First operand 803 states and 945 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:25,621 INFO L93 Difference]: Finished difference Result 1638 states and 1932 transitions. [2024-12-02 11:54:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 11:54:25,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:25,625 INFO L225 Difference]: With dead ends: 1638 [2024-12-02 11:54:25,625 INFO L226 Difference]: Without dead ends: 1061 [2024-12-02 11:54:25,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:54:25,626 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 66 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:25,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 626 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:54:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-12-02 11:54:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 829. [2024-12-02 11:54:25,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 656 states have (on average 1.125) internal successors, (738), 662 states have internal predecessors, (738), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 978 transitions. [2024-12-02 11:54:25,723 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 978 transitions. Word has length 129 [2024-12-02 11:54:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:25,723 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 978 transitions. [2024-12-02 11:54:25,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:25,723 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 978 transitions. [2024-12-02 11:54:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:25,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:25,724 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:25,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 11:54:25,724 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:25,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash -518412678, now seen corresponding path program 1 times [2024-12-02 11:54:25,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:25,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211630721] [2024-12-02 11:54:25,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:26,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:26,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211630721] [2024-12-02 11:54:26,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211630721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:26,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:26,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 11:54:26,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035002544] [2024-12-02 11:54:26,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:26,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 11:54:26,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:26,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 11:54:26,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-12-02 11:54:26,847 INFO L87 Difference]: Start difference. First operand 829 states and 978 transitions. Second operand has 19 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:28,330 INFO L93 Difference]: Finished difference Result 1670 states and 1969 transitions. [2024-12-02 11:54:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 11:54:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:28,336 INFO L225 Difference]: With dead ends: 1670 [2024-12-02 11:54:28,336 INFO L226 Difference]: Without dead ends: 1067 [2024-12-02 11:54:28,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2024-12-02 11:54:28,337 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 73 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:28,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1652 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 11:54:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2024-12-02 11:54:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 835. [2024-12-02 11:54:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 662 states have (on average 1.1238670694864048) internal successors, (744), 668 states have internal predecessors, (744), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 984 transitions. [2024-12-02 11:54:28,439 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 984 transitions. Word has length 129 [2024-12-02 11:54:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:28,439 INFO L471 AbstractCegarLoop]: Abstraction has 835 states and 984 transitions. [2024-12-02 11:54:28,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 19 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 984 transitions. [2024-12-02 11:54:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:28,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:28,440 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:28,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 11:54:28,441 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:28,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:28,441 INFO L85 PathProgramCache]: Analyzing trace with hash -535015531, now seen corresponding path program 1 times [2024-12-02 11:54:28,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:28,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868446851] [2024-12-02 11:54:28,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:28,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:28,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868446851] [2024-12-02 11:54:28,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868446851] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:28,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:28,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:54:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763492653] [2024-12-02 11:54:28,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:28,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:54:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:28,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:54:28,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:28,874 INFO L87 Difference]: Start difference. First operand 835 states and 984 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:29,358 INFO L93 Difference]: Finished difference Result 1428 states and 1683 transitions. [2024-12-02 11:54:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:29,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:29,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:29,361 INFO L225 Difference]: With dead ends: 1428 [2024-12-02 11:54:29,361 INFO L226 Difference]: Without dead ends: 819 [2024-12-02 11:54:29,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:29,362 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 72 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:29,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 484 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:54:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-12-02 11:54:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 790. [2024-12-02 11:54:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 617 states have (on average 1.1053484602917343) internal successors, (682), 623 states have internal predecessors, (682), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 922 transitions. [2024-12-02 11:54:29,462 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 922 transitions. Word has length 129 [2024-12-02 11:54:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:29,462 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 922 transitions. [2024-12-02 11:54:29,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 922 transitions. [2024-12-02 11:54:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:29,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:29,463 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:29,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 11:54:29,463 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:29,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1030733654, now seen corresponding path program 1 times [2024-12-02 11:54:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:29,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518662055] [2024-12-02 11:54:29,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518662055] [2024-12-02 11:54:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518662055] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:29,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:29,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:54:29,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696133081] [2024-12-02 11:54:29,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:29,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:54:29,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:29,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:54:29,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:29,868 INFO L87 Difference]: Start difference. First operand 790 states and 922 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:30,170 INFO L93 Difference]: Finished difference Result 1354 states and 1582 transitions. [2024-12-02 11:54:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:30,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:30,173 INFO L225 Difference]: With dead ends: 1354 [2024-12-02 11:54:30,173 INFO L226 Difference]: Without dead ends: 790 [2024-12-02 11:54:30,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:30,174 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:30,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 469 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:54:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2024-12-02 11:54:30,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2024-12-02 11:54:30,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 617 states have (on average 1.1037277147487845) internal successors, (681), 623 states have internal predecessors, (681), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 921 transitions. [2024-12-02 11:54:30,284 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 921 transitions. Word has length 129 [2024-12-02 11:54:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:30,285 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 921 transitions. [2024-12-02 11:54:30,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 921 transitions. [2024-12-02 11:54:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:30,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:30,285 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:30,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 11:54:30,285 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:30,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1164747160, now seen corresponding path program 1 times [2024-12-02 11:54:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495903212] [2024-12-02 11:54:30,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:31,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:31,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495903212] [2024-12-02 11:54:31,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495903212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:31,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:31,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 11:54:31,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433674075] [2024-12-02 11:54:31,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:31,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 11:54:31,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:31,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 11:54:31,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-12-02 11:54:31,139 INFO L87 Difference]: Start difference. First operand 790 states and 921 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:32,289 INFO L93 Difference]: Finished difference Result 1479 states and 1722 transitions. [2024-12-02 11:54:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 11:54:32,289 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-12-02 11:54:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:32,292 INFO L225 Difference]: With dead ends: 1479 [2024-12-02 11:54:32,292 INFO L226 Difference]: Without dead ends: 915 [2024-12-02 11:54:32,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-12-02 11:54:32,293 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 69 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:32,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1556 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:54:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2024-12-02 11:54:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 790. [2024-12-02 11:54:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 617 states have (on average 1.1037277147487845) internal successors, (681), 623 states have internal predecessors, (681), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 921 transitions. [2024-12-02 11:54:32,395 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 921 transitions. Word has length 129 [2024-12-02 11:54:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:32,395 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 921 transitions. [2024-12-02 11:54:32,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 921 transitions. [2024-12-02 11:54:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 11:54:32,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:32,395 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:32,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 11:54:32,396 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:32,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1013282735, now seen corresponding path program 1 times [2024-12-02 11:54:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:32,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937066425] [2024-12-02 11:54:32,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937066425] [2024-12-02 11:54:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937066425] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:33,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:33,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 11:54:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758502987] [2024-12-02 11:54:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:33,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 11:54:33,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:33,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 11:54:33,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-12-02 11:54:33,353 INFO L87 Difference]: Start difference. First operand 790 states and 921 transitions. Second operand has 11 states, 7 states have (on average 7.428571428571429) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 11:54:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:34,267 INFO L93 Difference]: Finished difference Result 1554 states and 1809 transitions. [2024-12-02 11:54:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:54:34,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 7.428571428571429) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-12-02 11:54:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:34,271 INFO L225 Difference]: With dead ends: 1554 [2024-12-02 11:54:34,271 INFO L226 Difference]: Without dead ends: 990 [2024-12-02 11:54:34,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:54:34,272 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 60 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:34,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 893 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:54:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-12-02 11:54:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 778. [2024-12-02 11:54:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 605 states have (on average 1.0991735537190082) internal successors, (665), 611 states have internal predecessors, (665), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 905 transitions. [2024-12-02 11:54:34,381 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 905 transitions. Word has length 129 [2024-12-02 11:54:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:34,381 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 905 transitions. [2024-12-02 11:54:34,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 7.428571428571429) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-12-02 11:54:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 905 transitions. [2024-12-02 11:54:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:54:34,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:34,382 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:34,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 11:54:34,382 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:34,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash 155684343, now seen corresponding path program 1 times [2024-12-02 11:54:34,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972390514] [2024-12-02 11:54:34,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:34,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:34,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972390514] [2024-12-02 11:54:34,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972390514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:34,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148925021] [2024-12-02 11:54:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:34,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:34,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:34,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:34,539 INFO L87 Difference]: Start difference. First operand 778 states and 905 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:34,825 INFO L93 Difference]: Finished difference Result 1332 states and 1549 transitions. [2024-12-02 11:54:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2024-12-02 11:54:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:34,829 INFO L225 Difference]: With dead ends: 1332 [2024-12-02 11:54:34,829 INFO L226 Difference]: Without dead ends: 780 [2024-12-02 11:54:34,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:34,830 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 43 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:34,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 327 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:54:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2024-12-02 11:54:34,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 778. [2024-12-02 11:54:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 605 states have (on average 1.0859504132231406) internal successors, (657), 611 states have internal predecessors, (657), 120 states have call successors, (120), 52 states have call predecessors, (120), 52 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 897 transitions. [2024-12-02 11:54:34,941 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 897 transitions. Word has length 131 [2024-12-02 11:54:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:34,941 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 897 transitions. [2024-12-02 11:54:34,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 897 transitions. [2024-12-02 11:54:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 11:54:34,942 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:34,942 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:34,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 11:54:34,942 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:34,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2122958512, now seen corresponding path program 1 times [2024-12-02 11:54:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283615444] [2024-12-02 11:54:34,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:54:35,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850379225] [2024-12-02 11:54:35,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:35,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:35,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:54:35,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:54:35,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:54:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:35,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 11:54:35,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:54:35,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:35,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:35,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:35,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2024-12-02 11:54:35,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:35,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 98 [2024-12-02 11:54:35,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:35,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 43 treesize of output 53 [2024-12-02 11:54:35,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:35,929 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 120 treesize of output 48 [2024-12-02 11:54:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:35,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:54:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283615444] [2024-12-02 11:54:35,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:54:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850379225] [2024-12-02 11:54:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850379225] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:35,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:35,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:54:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29829594] [2024-12-02 11:54:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:35,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:35,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:35,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:35,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:35,948 INFO L87 Difference]: Start difference. First operand 778 states and 897 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:36,781 INFO L93 Difference]: Finished difference Result 1792 states and 2049 transitions. [2024-12-02 11:54:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:36,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2024-12-02 11:54:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:36,785 INFO L225 Difference]: With dead ends: 1792 [2024-12-02 11:54:36,785 INFO L226 Difference]: Without dead ends: 1088 [2024-12-02 11:54:36,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:36,786 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 121 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:36,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 646 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:54:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-12-02 11:54:36,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 850. [2024-12-02 11:54:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 675 states have (on average 1.0666666666666667) internal successors, (720), 681 states have internal predecessors, (720), 120 states have call successors, (120), 54 states have call predecessors, (120), 54 states have return successors, (120), 114 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 11:54:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 960 transitions. [2024-12-02 11:54:36,904 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 960 transitions. Word has length 136 [2024-12-02 11:54:36,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:36,904 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 960 transitions. [2024-12-02 11:54:36,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 960 transitions. [2024-12-02 11:54:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 11:54:36,904 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:36,905 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:36,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:54:37,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:37,105 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:37,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:37,106 INFO L85 PathProgramCache]: Analyzing trace with hash 932736560, now seen corresponding path program 1 times [2024-12-02 11:54:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763639005] [2024-12-02 11:54:37,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:54:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540422991] [2024-12-02 11:54:37,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:37,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:54:37,294 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:54:37,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:54:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:37,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 11:54:37,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:54:37,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-02 11:54:37,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:37,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 42 treesize of output 29 [2024-12-02 11:54:37,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:37,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 52 treesize of output 33 [2024-12-02 11:54:37,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:37,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 85 treesize of output 57 [2024-12-02 11:54:38,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:38,136 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 102 treesize of output 42 [2024-12-02 11:54:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 229 proven. 15 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-12-02 11:54:38,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:54:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:38,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763639005] [2024-12-02 11:54:38,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:54:38,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540422991] [2024-12-02 11:54:38,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540422991] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:54:38,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:54:38,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2024-12-02 11:54:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240663044] [2024-12-02 11:54:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:38,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:54:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:38,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:54:38,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-12-02 11:54:38,555 INFO L87 Difference]: Start difference. First operand 850 states and 960 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:39,308 INFO L93 Difference]: Finished difference Result 1535 states and 1727 transitions. [2024-12-02 11:54:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:39,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2024-12-02 11:54:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:39,312 INFO L225 Difference]: With dead ends: 1535 [2024-12-02 11:54:39,312 INFO L226 Difference]: Without dead ends: 974 [2024-12-02 11:54:39,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2024-12-02 11:54:39,313 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 166 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:39,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 278 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:54:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-12-02 11:54:39,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 749. [2024-12-02 11:54:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 602 states have (on average 1.0664451827242525) internal successors, (642), 606 states have internal predecessors, (642), 100 states have call successors, (100), 46 states have call predecessors, (100), 46 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 11:54:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 842 transitions. [2024-12-02 11:54:39,428 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 842 transitions. Word has length 137 [2024-12-02 11:54:39,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:39,428 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 842 transitions. [2024-12-02 11:54:39,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 842 transitions. [2024-12-02 11:54:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 11:54:39,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:39,429 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:39,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:54:39,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:39,630 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:39,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash 446687016, now seen corresponding path program 1 times [2024-12-02 11:54:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484476349] [2024-12-02 11:54:39,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:54:39,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575280944] [2024-12-02 11:54:39,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:39,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:39,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:54:39,729 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:54:39,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:54:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:40,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 11:54:40,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:54:40,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:40,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:40,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:40,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:40,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:40,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 43 [2024-12-02 11:54:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:40,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:54:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484476349] [2024-12-02 11:54:40,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:54:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575280944] [2024-12-02 11:54:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575280944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:40,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 11:54:40,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507756271] [2024-12-02 11:54:40,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:40,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 11:54:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:40,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 11:54:40,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:40,270 INFO L87 Difference]: Start difference. First operand 749 states and 842 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:41,042 INFO L93 Difference]: Finished difference Result 1565 states and 1756 transitions. [2024-12-02 11:54:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:41,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2024-12-02 11:54:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:41,046 INFO L225 Difference]: With dead ends: 1565 [2024-12-02 11:54:41,046 INFO L226 Difference]: Without dead ends: 890 [2024-12-02 11:54:41,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:41,047 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 49 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:41,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 287 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:54:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-12-02 11:54:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 749. [2024-12-02 11:54:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 602 states have (on average 1.06312292358804) internal successors, (640), 606 states have internal predecessors, (640), 100 states have call successors, (100), 46 states have call predecessors, (100), 46 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-12-02 11:54:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 840 transitions. [2024-12-02 11:54:41,161 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 840 transitions. Word has length 137 [2024-12-02 11:54:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:41,161 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 840 transitions. [2024-12-02 11:54:41,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 840 transitions. [2024-12-02 11:54:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 11:54:41,161 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:41,161 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:41,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 11:54:41,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 11:54:41,362 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:41,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1546595333, now seen corresponding path program 1 times [2024-12-02 11:54:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:41,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201892587] [2024-12-02 11:54:41,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:41,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:54:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185599785] [2024-12-02 11:54:41,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:41,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:41,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:54:41,448 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:54:41,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 11:54:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:41,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-12-02 11:54:41,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:54:41,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 20 [2024-12-02 11:54:41,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:41,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 34 [2024-12-02 11:54:42,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:42,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 34 [2024-12-02 11:54:42,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:42,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 67 treesize of output 49 [2024-12-02 11:54:42,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 98 [2024-12-02 11:54:42,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:42,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 134 [2024-12-02 11:54:42,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 84 [2024-12-02 11:54:44,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:44,342 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 283 treesize of output 115 [2024-12-02 11:54:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 293 proven. 42 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 11:54:44,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:54:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:44,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201892587] [2024-12-02 11:54:44,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:54:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185599785] [2024-12-02 11:54:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185599785] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 11:54:44,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:54:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [23] total 27 [2024-12-02 11:54:44,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278389149] [2024-12-02 11:54:44,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:44,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:44,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:44,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-12-02 11:54:44,895 INFO L87 Difference]: Start difference. First operand 749 states and 840 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:45,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:45,565 INFO L93 Difference]: Finished difference Result 1375 states and 1535 transitions. [2024-12-02 11:54:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:54:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-12-02 11:54:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:45,570 INFO L225 Difference]: With dead ends: 1375 [2024-12-02 11:54:45,570 INFO L226 Difference]: Without dead ends: 684 [2024-12-02 11:54:45,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2024-12-02 11:54:45,572 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 126 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:45,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 433 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:54:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-12-02 11:54:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 603. [2024-12-02 11:54:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 494 states have (on average 1.0587044534412955) internal successors, (523), 497 states have internal predecessors, (523), 73 states have call successors, (73), 35 states have call predecessors, (73), 35 states have return successors, (73), 70 states have call predecessors, (73), 73 states have call successors, (73) [2024-12-02 11:54:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 669 transitions. [2024-12-02 11:54:45,733 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 669 transitions. Word has length 138 [2024-12-02 11:54:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:45,733 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 669 transitions. [2024-12-02 11:54:45,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 669 transitions. [2024-12-02 11:54:45,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-12-02 11:54:45,735 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:45,735 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:45,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 11:54:45,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:45,935 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:45,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1662261711, now seen corresponding path program 1 times [2024-12-02 11:54:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:45,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740477377] [2024-12-02 11:54:45,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:45,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 11:54:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621966621] [2024-12-02 11:54:46,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:46,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:54:46,011 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:54:46,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 11:54:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:46,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 11:54:46,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:54:46,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 11:54:46,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:46,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 53 treesize of output 34 [2024-12-02 11:54:46,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 11:54:46,420 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 70 treesize of output 28 [2024-12-02 11:54:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:46,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:54:46,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:46,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740477377] [2024-12-02 11:54:46,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 11:54:46,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621966621] [2024-12-02 11:54:46,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621966621] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:46,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:46,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:54:46,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381522757] [2024-12-02 11:54:46,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:46,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:46,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:46,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:46,441 INFO L87 Difference]: Start difference. First operand 603 states and 669 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:46,923 INFO L93 Difference]: Finished difference Result 1190 states and 1318 transitions. [2024-12-02 11:54:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:54:46,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-12-02 11:54:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:46,926 INFO L225 Difference]: With dead ends: 1190 [2024-12-02 11:54:46,926 INFO L226 Difference]: Without dead ends: 749 [2024-12-02 11:54:46,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:46,927 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 53 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:46,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 388 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:54:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-12-02 11:54:47,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 630. [2024-12-02 11:54:47,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 503 states have (on average 1.0457256461232605) internal successors, (526), 507 states have internal predecessors, (526), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2024-12-02 11:54:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 696 transitions. [2024-12-02 11:54:47,105 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 696 transitions. Word has length 138 [2024-12-02 11:54:47,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:47,106 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 696 transitions. [2024-12-02 11:54:47,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 696 transitions. [2024-12-02 11:54:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 11:54:47,106 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:47,106 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:47,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 11:54:47,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efbb86f5-6571-411a-abc8-1964a31acf47/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:54:47,307 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:47,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1644945126, now seen corresponding path program 1 times [2024-12-02 11:54:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917478925] [2024-12-02 11:54:47,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:48,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917478925] [2024-12-02 11:54:48,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917478925] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:48,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:48,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 11:54:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975143498] [2024-12-02 11:54:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:48,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 11:54:48,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:48,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 11:54:48,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:54:48,306 INFO L87 Difference]: Start difference. First operand 630 states and 696 transitions. Second operand has 15 states, 13 states have (on average 5.0) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:49,454 INFO L93 Difference]: Finished difference Result 778 states and 851 transitions. [2024-12-02 11:54:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 11:54:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.0) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2024-12-02 11:54:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:49,457 INFO L225 Difference]: With dead ends: 778 [2024-12-02 11:54:49,457 INFO L226 Difference]: Without dead ends: 776 [2024-12-02 11:54:49,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 11:54:49,458 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 73 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:49,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1064 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 11:54:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-12-02 11:54:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 767. [2024-12-02 11:54:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 620 states have (on average 1.0403225806451613) internal successors, (645), 625 states have internal predecessors, (645), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 11:54:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 841 transitions. [2024-12-02 11:54:49,605 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 841 transitions. Word has length 142 [2024-12-02 11:54:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:49,605 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 841 transitions. [2024-12-02 11:54:49,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.0) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-12-02 11:54:49,605 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 841 transitions. [2024-12-02 11:54:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 11:54:49,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:49,606 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:49,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 11:54:49,606 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:49,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -964886756, now seen corresponding path program 1 times [2024-12-02 11:54:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469339899] [2024-12-02 11:54:49,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:49,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469339899] [2024-12-02 11:54:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469339899] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:50,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:50,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:54:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42723596] [2024-12-02 11:54:50,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:50,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:50,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:50,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:50,199 INFO L87 Difference]: Start difference. First operand 767 states and 841 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:50,538 INFO L93 Difference]: Finished difference Result 1313 states and 1437 transitions. [2024-12-02 11:54:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:54:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-12-02 11:54:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:50,541 INFO L225 Difference]: With dead ends: 1313 [2024-12-02 11:54:50,541 INFO L226 Difference]: Without dead ends: 760 [2024-12-02 11:54:50,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:50,542 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 65 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:50,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 355 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:54:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-12-02 11:54:50,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-12-02 11:54:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 613 states have (on average 1.037520391517129) internal successors, (636), 618 states have internal predecessors, (636), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 11:54:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 832 transitions. [2024-12-02 11:54:50,706 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 832 transitions. Word has length 142 [2024-12-02 11:54:50,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:50,706 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 832 transitions. [2024-12-02 11:54:50,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 832 transitions. [2024-12-02 11:54:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 11:54:50,707 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:50,707 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:50,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 11:54:50,708 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:50,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1622312872, now seen corresponding path program 1 times [2024-12-02 11:54:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919718805] [2024-12-02 11:54:50,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:51,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919718805] [2024-12-02 11:54:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919718805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:51,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:51,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:54:51,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907091388] [2024-12-02 11:54:51,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:51,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:54:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:51,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:54:51,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:51,249 INFO L87 Difference]: Start difference. First operand 760 states and 832 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:51,595 INFO L93 Difference]: Finished difference Result 1306 states and 1427 transitions. [2024-12-02 11:54:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:54:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-12-02 11:54:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:51,598 INFO L225 Difference]: With dead ends: 1306 [2024-12-02 11:54:51,598 INFO L226 Difference]: Without dead ends: 760 [2024-12-02 11:54:51,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:51,599 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 65 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:51,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 426 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:54:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-12-02 11:54:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2024-12-02 11:54:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 613 states have (on average 1.0358890701468189) internal successors, (635), 618 states have internal predecessors, (635), 98 states have call successors, (98), 48 states have call predecessors, (98), 48 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2024-12-02 11:54:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 831 transitions. [2024-12-02 11:54:51,787 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 831 transitions. Word has length 142 [2024-12-02 11:54:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:51,787 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 831 transitions. [2024-12-02 11:54:51,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-12-02 11:54:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 831 transitions. [2024-12-02 11:54:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 11:54:51,788 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:51,789 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:51,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 11:54:51,789 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:51,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:51,789 INFO L85 PathProgramCache]: Analyzing trace with hash -942254502, now seen corresponding path program 1 times [2024-12-02 11:54:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:51,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953945141] [2024-12-02 11:54:51,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-12-02 11:54:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953945141] [2024-12-02 11:54:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953945141] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 11:54:52,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952136289] [2024-12-02 11:54:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:52,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 11:54:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:52,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 11:54:52,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:54:52,344 INFO L87 Difference]: Start difference. First operand 760 states and 831 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:52,981 INFO L93 Difference]: Finished difference Result 835 states and 925 transitions. [2024-12-02 11:54:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 11:54:52,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2024-12-02 11:54:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:52,983 INFO L225 Difference]: With dead ends: 835 [2024-12-02 11:54:52,983 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 11:54:52,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-12-02 11:54:52,984 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 84 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:52,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1696 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:54:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 11:54:52,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 11:54:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 11:54:52,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2024-12-02 11:54:52,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:52,985 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 11:54:52,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-12-02 11:54:52,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 11:54:52,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 11:54:52,987 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 11:54:52,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 11:54:52,990 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:52,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.