./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:52:44,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:52:44,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:52:44,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:52:44,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:52:44,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:52:44,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:52:44,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:52:44,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:52:44,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:52:44,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:52:44,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:52:44,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:52:44,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:52:44,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:52:44,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:52:44,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:52:44,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:52:44,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:52:44,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:52:44,083 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:52:44,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:52:44,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:52:44,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:52:44,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:52:44,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:52:44,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:52:44,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:52:44,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:52:44,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:52:44,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:52:44,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:52:44,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:52:44,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:52:44,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:52:44,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:52:44,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:52:44,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:52:44,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:52:44,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:52:44,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:52:44,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:52:44,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:52:44,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:52:44,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:52:44,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:52:44,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:52:44,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:52:44,142 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:52:44,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:52:44,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:52:44,144 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:52:44,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:52:44,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:52:44,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:52:44,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:52:44,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:52:44,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:52:44,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:52:44,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:52:44,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:52:44,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:52:44,147 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:52:44,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:52:44,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:52:44,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:52:44,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:52:44,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:52:44,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:52:44,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:52:44,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:52:44,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:52:44,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:52:44,150 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:52:44,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:52:44,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:52:44,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 [2022-07-22 17:52:44,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:52:44,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:52:44,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:52:44,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:52:44,459 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:52:44,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2022-07-22 17:52:44,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c28d403/78263d0a9ffc4c0fac5dcaff7c4906a4/FLAG5d405269a [2022-07-22 17:52:45,023 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:52:45,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2022-07-22 17:52:45,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c28d403/78263d0a9ffc4c0fac5dcaff7c4906a4/FLAG5d405269a [2022-07-22 17:52:45,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c28d403/78263d0a9ffc4c0fac5dcaff7c4906a4 [2022-07-22 17:52:45,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:52:45,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:52:45,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:52:45,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:52:45,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:52:45,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc2211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45, skipping insertion in model container [2022-07-22 17:52:45,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:52:45,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:52:45,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-2.c[671,684] [2022-07-22 17:52:45,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:52:45,794 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:52:45,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-2.c[671,684] [2022-07-22 17:52:45,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:52:45,868 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:52:45,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45 WrapperNode [2022-07-22 17:52:45,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:52:45,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:52:45,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:52:45,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:52:45,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,928 INFO L137 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 505 [2022-07-22 17:52:45,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:52:45,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:52:45,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:52:45,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:52:45,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:52:45,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:52:45,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:52:45,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:52:45,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (1/1) ... [2022-07-22 17:52:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:52:45,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:52:45,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:52:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:52:46,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:52:46,052 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:52:46,052 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:52:46,053 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:52:46,053 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:52:46,053 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:52:46,053 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:52:46,053 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:52:46,053 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:52:46,053 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:52:46,054 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:52:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:52:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:52:46,054 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:52:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:52:46,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:52:46,131 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:52:46,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:52:46,688 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:52:46,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:52:46,702 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-22 17:52:46,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:52:46 BoogieIcfgContainer [2022-07-22 17:52:46,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:52:46,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:52:46,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:52:46,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:52:46,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:52:45" (1/3) ... [2022-07-22 17:52:46,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b93788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:52:46, skipping insertion in model container [2022-07-22 17:52:46,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:52:45" (2/3) ... [2022-07-22 17:52:46,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b93788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:52:46, skipping insertion in model container [2022-07-22 17:52:46,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:52:46" (3/3) ... [2022-07-22 17:52:46,716 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.c [2022-07-22 17:52:46,729 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:52:46,729 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:52:46,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:52:46,782 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73584086, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f913e74 [2022-07-22 17:52:46,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:52:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 206 states have internal predecessors, (333), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 17:52:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:46,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:46,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:46,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1459493847, now seen corresponding path program 1 times [2022-07-22 17:52:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:46,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171833469] [2022-07-22 17:52:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:47,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:47,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:47,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171833469] [2022-07-22 17:52:47,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171833469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:47,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:47,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:52:47,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263257798] [2022-07-22 17:52:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:47,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:52:47,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:47,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:52:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:52:47,311 INFO L87 Difference]: Start difference. First operand has 232 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 206 states have internal predecessors, (333), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:48,177 INFO L93 Difference]: Finished difference Result 533 states and 868 transitions. [2022-07-22 17:52:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:52:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:48,191 INFO L225 Difference]: With dead ends: 533 [2022-07-22 17:52:48,191 INFO L226 Difference]: Without dead ends: 303 [2022-07-22 17:52:48,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:52:48,199 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 584 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:48,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 625 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:52:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-22 17:52:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 227. [2022-07-22 17:52:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 200 states have (on average 1.54) internal successors, (308), 201 states have internal predecessors, (308), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 17:52:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 348 transitions. [2022-07-22 17:52:48,260 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 348 transitions. Word has length 111 [2022-07-22 17:52:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:48,261 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 348 transitions. [2022-07-22 17:52:48,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 348 transitions. [2022-07-22 17:52:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:48,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:48,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:48,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:52:48,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:48,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1446179435, now seen corresponding path program 1 times [2022-07-22 17:52:48,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:48,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767972651] [2022-07-22 17:52:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:48,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:48,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767972651] [2022-07-22 17:52:48,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767972651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:48,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:48,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:52:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342744098] [2022-07-22 17:52:48,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:52:48,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:48,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:52:48,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:52:48,437 INFO L87 Difference]: Start difference. First operand 227 states and 348 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:49,869 INFO L93 Difference]: Finished difference Result 811 states and 1275 transitions. [2022-07-22 17:52:49,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:52:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:49,879 INFO L225 Difference]: With dead ends: 811 [2022-07-22 17:52:49,879 INFO L226 Difference]: Without dead ends: 598 [2022-07-22 17:52:49,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:52:49,887 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 863 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:49,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1056 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:52:49,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-07-22 17:52:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 447. [2022-07-22 17:52:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 398 states have (on average 1.5527638190954773) internal successors, (618), 400 states have internal predecessors, (618), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-07-22 17:52:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 691 transitions. [2022-07-22 17:52:49,934 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 691 transitions. Word has length 111 [2022-07-22 17:52:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:49,934 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 691 transitions. [2022-07-22 17:52:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 691 transitions. [2022-07-22 17:52:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:49,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:49,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:49,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:52:49,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:49,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:49,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1569789201, now seen corresponding path program 1 times [2022-07-22 17:52:49,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:49,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446092368] [2022-07-22 17:52:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:49,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:49,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:50,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:50,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:50,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446092368] [2022-07-22 17:52:50,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446092368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:50,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:50,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:50,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114323449] [2022-07-22 17:52:50,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:50,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:50,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:50,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:50,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:50,096 INFO L87 Difference]: Start difference. First operand 447 states and 691 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:51,945 INFO L93 Difference]: Finished difference Result 1334 states and 2095 transitions. [2022-07-22 17:52:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:51,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:51,951 INFO L225 Difference]: With dead ends: 1334 [2022-07-22 17:52:51,951 INFO L226 Difference]: Without dead ends: 901 [2022-07-22 17:52:51,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:51,954 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 869 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:51,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1679 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 17:52:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-07-22 17:52:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 652. [2022-07-22 17:52:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 581 states have (on average 1.5456110154905336) internal successors, (898), 584 states have internal predecessors, (898), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-22 17:52:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1003 transitions. [2022-07-22 17:52:51,998 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1003 transitions. Word has length 111 [2022-07-22 17:52:51,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:51,999 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1003 transitions. [2022-07-22 17:52:51,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:51,999 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1003 transitions. [2022-07-22 17:52:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:52,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:52,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:52,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:52:52,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:52,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1106203181, now seen corresponding path program 1 times [2022-07-22 17:52:52,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:52,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649875332] [2022-07-22 17:52:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:52,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:52,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649875332] [2022-07-22 17:52:52,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649875332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:52,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:52,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:52,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042421357] [2022-07-22 17:52:52,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:52,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:52,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:52,117 INFO L87 Difference]: Start difference. First operand 652 states and 1003 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:53,807 INFO L93 Difference]: Finished difference Result 2104 states and 3295 transitions. [2022-07-22 17:52:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:53,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:53,816 INFO L225 Difference]: With dead ends: 2104 [2022-07-22 17:52:53,816 INFO L226 Difference]: Without dead ends: 1466 [2022-07-22 17:52:53,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:53,819 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 933 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:53,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1168 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:52:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-07-22 17:52:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1063. [2022-07-22 17:52:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 948 states have (on average 1.5390295358649788) internal successors, (1459), 953 states have internal predecessors, (1459), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2022-07-22 17:52:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1632 transitions. [2022-07-22 17:52:53,883 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1632 transitions. Word has length 111 [2022-07-22 17:52:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:53,883 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1632 transitions. [2022-07-22 17:52:53,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1632 transitions. [2022-07-22 17:52:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:53,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:53,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:52:53,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:53,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 222694191, now seen corresponding path program 1 times [2022-07-22 17:52:53,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:53,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673610821] [2022-07-22 17:52:53,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:53,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:54,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:54,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:54,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:54,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673610821] [2022-07-22 17:52:54,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673610821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:54,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:54,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:54,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266836875] [2022-07-22 17:52:54,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:54,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:54,023 INFO L87 Difference]: Start difference. First operand 1063 states and 1632 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:55,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:55,747 INFO L93 Difference]: Finished difference Result 3584 states and 5592 transitions. [2022-07-22 17:52:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:55,762 INFO L225 Difference]: With dead ends: 3584 [2022-07-22 17:52:55,763 INFO L226 Difference]: Without dead ends: 2535 [2022-07-22 17:52:55,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:55,771 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 863 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:55,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1663 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:52:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-07-22 17:52:55,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1891. [2022-07-22 17:52:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1688 states have (on average 1.5349526066350712) internal successors, (2591), 1697 states have internal predecessors, (2591), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2022-07-22 17:52:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2906 transitions. [2022-07-22 17:52:55,917 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2906 transitions. Word has length 111 [2022-07-22 17:52:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:55,917 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2906 transitions. [2022-07-22 17:52:55,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2906 transitions. [2022-07-22 17:52:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:55,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:55,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:52:55,921 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1717887823, now seen corresponding path program 1 times [2022-07-22 17:52:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:55,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199966492] [2022-07-22 17:52:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:55,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:55,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:56,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199966492] [2022-07-22 17:52:56,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199966492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:56,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:56,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228429447] [2022-07-22 17:52:56,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:56,034 INFO L87 Difference]: Start difference. First operand 1891 states and 2906 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:57,797 INFO L93 Difference]: Finished difference Result 6554 states and 10220 transitions. [2022-07-22 17:52:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:57,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:52:57,821 INFO L225 Difference]: With dead ends: 6554 [2022-07-22 17:52:57,821 INFO L226 Difference]: Without dead ends: 4677 [2022-07-22 17:52:57,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:52:57,829 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 862 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:52:57,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1658 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:52:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2022-07-22 17:52:58,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 3552. [2022-07-22 17:52:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3173 states have (on average 1.5319886542704066) internal successors, (4861), 3190 states have internal predecessors, (4861), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2022-07-22 17:52:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 5478 transitions. [2022-07-22 17:52:58,043 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 5478 transitions. Word has length 111 [2022-07-22 17:52:58,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:52:58,043 INFO L495 AbstractCegarLoop]: Abstraction has 3552 states and 5478 transitions. [2022-07-22 17:52:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:58,044 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 5478 transitions. [2022-07-22 17:52:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:52:58,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:52:58,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:52:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:52:58,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:52:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:52:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash 159175407, now seen corresponding path program 1 times [2022-07-22 17:52:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:52:58,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772466034] [2022-07-22 17:52:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:52:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:52:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:52:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:58,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:52:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:52:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:52:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:52:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:52:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:52:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:52:58,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772466034] [2022-07-22 17:52:58,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772466034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:52:58,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:52:58,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:52:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299595556] [2022-07-22 17:52:58,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:52:58,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:52:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:52:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:52:58,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:52:58,195 INFO L87 Difference]: Start difference. First operand 3552 states and 5478 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:52:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:52:59,965 INFO L93 Difference]: Finished difference Result 12493 states and 19534 transitions. [2022-07-22 17:52:59,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 17:52:59,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:52:59,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:00,016 INFO L225 Difference]: With dead ends: 12493 [2022-07-22 17:53:00,017 INFO L226 Difference]: Without dead ends: 8955 [2022-07-22 17:53:00,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:53:00,034 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 861 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:00,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1653 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:53:00,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8955 states. [2022-07-22 17:53:00,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8955 to 6889. [2022-07-22 17:53:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6889 states, 6158 states have (on average 1.5302046118869763) internal successors, (9423), 6191 states have internal predecessors, (9423), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2022-07-22 17:53:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10698 transitions. [2022-07-22 17:53:00,470 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10698 transitions. Word has length 111 [2022-07-22 17:53:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:00,470 INFO L495 AbstractCegarLoop]: Abstraction has 6889 states and 10698 transitions. [2022-07-22 17:53:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:00,471 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10698 transitions. [2022-07-22 17:53:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:53:00,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:00,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:00,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:53:00,478 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -611558159, now seen corresponding path program 1 times [2022-07-22 17:53:00,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:00,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112574411] [2022-07-22 17:53:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:00,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:00,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:53:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:53:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:00,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:53:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:53:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:00,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:00,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112574411] [2022-07-22 17:53:00,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112574411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:00,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:00,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:00,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911768164] [2022-07-22 17:53:00,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:00,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:00,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:00,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:00,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:00,585 INFO L87 Difference]: Start difference. First operand 6889 states and 10698 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:03,073 INFO L93 Difference]: Finished difference Result 27348 states and 42838 transitions. [2022-07-22 17:53:03,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:53:03,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:53:03,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:03,179 INFO L225 Difference]: With dead ends: 27348 [2022-07-22 17:53:03,180 INFO L226 Difference]: Without dead ends: 20473 [2022-07-22 17:53:03,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:53:03,212 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 1112 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:03,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1638 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:53:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2022-07-22 17:53:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 13498. [2022-07-22 17:53:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13498 states, 12095 states have (on average 1.5319553534518395) internal successors, (18529), 12160 states have internal predecessors, (18529), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2022-07-22 17:53:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13498 states to 13498 states and 21218 transitions. [2022-07-22 17:53:04,307 INFO L78 Accepts]: Start accepts. Automaton has 13498 states and 21218 transitions. Word has length 111 [2022-07-22 17:53:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:04,307 INFO L495 AbstractCegarLoop]: Abstraction has 13498 states and 21218 transitions. [2022-07-22 17:53:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13498 states and 21218 transitions. [2022-07-22 17:53:04,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:53:04,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:04,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:04,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:53:04,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:04,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1606251857, now seen corresponding path program 1 times [2022-07-22 17:53:04,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:04,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026701530] [2022-07-22 17:53:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:04,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:53:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:53:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:53:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:53:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:04,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:04,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026701530] [2022-07-22 17:53:04,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026701530] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:04,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:04,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724075640] [2022-07-22 17:53:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:04,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:04,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:04,446 INFO L87 Difference]: Start difference. First operand 13498 states and 21218 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:08,107 INFO L93 Difference]: Finished difference Result 53027 states and 83964 transitions. [2022-07-22 17:53:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:53:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:53:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:08,276 INFO L225 Difference]: With dead ends: 53027 [2022-07-22 17:53:08,276 INFO L226 Difference]: Without dead ends: 39543 [2022-07-22 17:53:08,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:53:08,337 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 911 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:08,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1721 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:53:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39543 states. [2022-07-22 17:53:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39543 to 26363. [2022-07-22 17:53:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26363 states, 23648 states have (on average 1.5332797699594045) internal successors, (36259), 23777 states have internal predecessors, (36259), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2022-07-22 17:53:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26363 states to 26363 states and 42198 transitions. [2022-07-22 17:53:10,194 INFO L78 Accepts]: Start accepts. Automaton has 26363 states and 42198 transitions. Word has length 111 [2022-07-22 17:53:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:10,195 INFO L495 AbstractCegarLoop]: Abstraction has 26363 states and 42198 transitions. [2022-07-22 17:53:10,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 26363 states and 42198 transitions. [2022-07-22 17:53:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:53:10,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:10,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:10,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:53:10,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2102439217, now seen corresponding path program 1 times [2022-07-22 17:53:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:10,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115743049] [2022-07-22 17:53:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:53:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:53:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:53:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:53:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:10,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115743049] [2022-07-22 17:53:10,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115743049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:10,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:10,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890386248] [2022-07-22 17:53:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:10,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:10,321 INFO L87 Difference]: Start difference. First operand 26363 states and 42198 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:16,363 INFO L93 Difference]: Finished difference Result 102242 states and 164674 transitions. [2022-07-22 17:53:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:53:16,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:53:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:16,749 INFO L225 Difference]: With dead ends: 102242 [2022-07-22 17:53:16,749 INFO L226 Difference]: Without dead ends: 75893 [2022-07-22 17:53:16,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:53:16,880 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1032 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:16,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1628 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:53:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75893 states. [2022-07-22 17:53:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75893 to 52348. [2022-07-22 17:53:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52348 states, 47073 states have (on average 1.5357636012151339) internal successors, (72293), 47330 states have internal predecessors, (72293), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2022-07-22 17:53:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52348 states to 52348 states and 86062 transitions. [2022-07-22 17:53:20,493 INFO L78 Accepts]: Start accepts. Automaton has 52348 states and 86062 transitions. Word has length 111 [2022-07-22 17:53:20,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:20,494 INFO L495 AbstractCegarLoop]: Abstraction has 52348 states and 86062 transitions. [2022-07-22 17:53:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:20,494 INFO L276 IsEmpty]: Start isEmpty. Operand 52348 states and 86062 transitions. [2022-07-22 17:53:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:53:20,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:20,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:20,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:53:20,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:20,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash 143864431, now seen corresponding path program 1 times [2022-07-22 17:53:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:20,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225461859] [2022-07-22 17:53:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:20,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:53:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:53:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:53:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:53:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:20,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225461859] [2022-07-22 17:53:20,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225461859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:20,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:20,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067549846] [2022-07-22 17:53:20,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:20,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:20,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:20,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:20,645 INFO L87 Difference]: Start difference. First operand 52348 states and 86062 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:31,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:53:31,278 INFO L93 Difference]: Finished difference Result 199137 states and 329560 transitions. [2022-07-22 17:53:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:53:31,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2022-07-22 17:53:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:53:31,779 INFO L225 Difference]: With dead ends: 199137 [2022-07-22 17:53:31,780 INFO L226 Difference]: Without dead ends: 146803 [2022-07-22 17:53:32,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:53:32,097 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 1046 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:53:32,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1139 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 17:53:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146803 states. [2022-07-22 17:53:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146803 to 104189. [2022-07-22 17:53:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104189 states, 93922 states have (on average 1.5383722663486723) internal successors, (144487), 94435 states have internal predecessors, (144487), 6676 states have call successors, (6676), 3078 states have call predecessors, (6676), 3590 states have return successors, (26871), 7187 states have call predecessors, (26871), 6676 states have call successors, (26871) [2022-07-22 17:53:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104189 states to 104189 states and 178034 transitions. [2022-07-22 17:53:39,178 INFO L78 Accepts]: Start accepts. Automaton has 104189 states and 178034 transitions. Word has length 111 [2022-07-22 17:53:39,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:53:39,179 INFO L495 AbstractCegarLoop]: Abstraction has 104189 states and 178034 transitions. [2022-07-22 17:53:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:53:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 104189 states and 178034 transitions. [2022-07-22 17:53:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:53:39,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:53:39,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:53:39,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:53:39,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:53:39,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:53:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2020347249, now seen corresponding path program 1 times [2022-07-22 17:53:39,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:53:39,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269537084] [2022-07-22 17:53:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:53:39,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:53:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:53:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:53:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:53:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:53:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:53:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:53:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:53:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:53:39,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269537084] [2022-07-22 17:53:39,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269537084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:53:39,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:53:39,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:53:39,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346063300] [2022-07-22 17:53:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:53:39,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:53:39,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:53:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:53:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:53:39,408 INFO L87 Difference]: Start difference. First operand 104189 states and 178034 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)