./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.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/combinations/Problem05_label42+token_ring.11.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 0dd7176ec9512a8a603e4cceffab6b6f1677decce373a9b5c36f88d73957ca4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:31:35,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:31:35,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:31:35,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:31:35,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:31:35,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:31:35,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:31:35,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:31:35,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:31:35,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:31:35,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:31:35,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:31:35,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:31:35,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:31:35,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:31:35,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:31:35,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:31:35,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:31:35,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:31:35,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:31:35,105 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:31:35,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:31:35,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:31:35,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:31:35,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:31:35,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:31:35,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:31:35,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:31:35,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:31:35,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:31:35,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:31:35,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:31:35,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:31:35,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:31:35,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:31:35,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:31:35,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:31:35,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:31:35,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:31:35,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:31:35,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:31:35,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:31:35,120 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:31:35,143 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:31:35,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:31:35,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:31:35,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:31:35,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:31:35,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:31:35,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:31:35,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:31:35,145 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:31:35,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:31:35,146 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:31:35,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:31:35,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:31:35,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:31:35,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:31:35,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:31:35,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:31:35,147 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:31:35,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:31:35,148 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:31:35,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:31:35,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:31:35,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:31:35,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:31:35,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:31:35,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:31:35,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:31:35,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:31:35,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:31:35,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:31:35,149 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:31:35,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:31:35,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:31:35,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dd7176ec9512a8a603e4cceffab6b6f1677decce373a9b5c36f88d73957ca4d [2022-07-22 19:31:35,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:31:35,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:31:35,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:31:35,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:31:35,373 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:31:35,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c [2022-07-22 19:31:35,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf6a2f12/841ebd27b6944ce6acf4b14064332c9f/FLAG8a3e22218 [2022-07-22 19:31:36,095 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:31:36,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c [2022-07-22 19:31:36,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf6a2f12/841ebd27b6944ce6acf4b14064332c9f/FLAG8a3e22218 [2022-07-22 19:31:36,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf6a2f12/841ebd27b6944ce6acf4b14064332c9f [2022-07-22 19:31:36,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:31:36,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:31:36,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:31:36,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:31:36,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:31:36,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:31:36" (1/1) ... [2022-07-22 19:31:36,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52374569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:36, skipping insertion in model container [2022-07-22 19:31:36,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:31:36" (1/1) ... [2022-07-22 19:31:36,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:31:36,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:31:38,114 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/combinations/Problem05_label42+token_ring.11.cil-2.c[378560,378573] [2022-07-22 19:31:38,133 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/combinations/Problem05_label42+token_ring.11.cil-2.c[383339,383352] [2022-07-22 19:31:38,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:31:38,324 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:31:38,876 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/combinations/Problem05_label42+token_ring.11.cil-2.c[378560,378573] [2022-07-22 19:31:38,882 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/combinations/Problem05_label42+token_ring.11.cil-2.c[383339,383352] [2022-07-22 19:31:38,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:31:38,938 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:31:38,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38 WrapperNode [2022-07-22 19:31:38,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:31:38,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:31:38,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:31:38,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:31:38,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,289 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-07-22 19:31:39,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:31:39,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:31:39,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:31:39,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:31:39,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:31:39,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:31:39,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:31:39,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:31:39,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (1/1) ... [2022-07-22 19:31:39,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:31:39,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:31:39,722 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 19:31:39,765 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 19:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:31:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:31:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:31:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:31:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:31:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:31:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:31:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:31:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:31:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:31:39,785 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:31:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:31:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:31:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:31:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:31:39,879 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:31:39,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:31:44,692 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:31:44,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:31:44,718 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-22 19:31:44,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:31:44 BoogieIcfgContainer [2022-07-22 19:31:44,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:31:44,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:31:44,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:31:44,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:31:44,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:31:36" (1/3) ... [2022-07-22 19:31:44,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35652c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:31:44, skipping insertion in model container [2022-07-22 19:31:44,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:31:38" (2/3) ... [2022-07-22 19:31:44,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35652c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:31:44, skipping insertion in model container [2022-07-22 19:31:44,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:31:44" (3/3) ... [2022-07-22 19:31:44,729 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.11.cil-2.c [2022-07-22 19:31:44,741 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:31:44,741 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:31:44,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:31:44,821 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@54cb712d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38fa26f3 [2022-07-22 19:31:44,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:31:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 19:31:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:31:44,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:31:44,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:44,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:31:44,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:31:44,875 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-07-22 19:31:44,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:31:44,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068852706] [2022-07-22 19:31:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:31:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:31:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:31:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:31:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:31:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:31:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:31:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:45,188 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 19:31:45,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:31:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068852706] [2022-07-22 19:31:45,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068852706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:31:45,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:31:45,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:31:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125919445] [2022-07-22 19:31:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:31:45,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:31:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:31:45,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:31:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:31:45,229 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 19:31:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:31:46,652 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-07-22 19:31:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:31:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-07-22 19:31:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:31:46,674 INFO L225 Difference]: With dead ends: 5199 [2022-07-22 19:31:46,674 INFO L226 Difference]: Without dead ends: 2604 [2022-07-22 19:31:46,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:31:46,683 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17076 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:31:46,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 17076 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:31:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-07-22 19:31:46,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-07-22 19:31:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 19:31:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-07-22 19:31:46,785 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-07-22 19:31:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:31:46,786 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-07-22 19:31:46,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 19:31:46,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-07-22 19:31:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:31:46,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:31:46,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:46,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:31:46,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:31:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:31:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-07-22 19:31:46,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:31:46,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258519806] [2022-07-22 19:31:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:31:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:31:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:31:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:31:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:31:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:31:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:31:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:46,946 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 19:31:46,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:31:46,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258519806] [2022-07-22 19:31:46,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258519806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:31:46,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:31:46,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:31:46,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167223733] [2022-07-22 19:31:46,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:31:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:31:46,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:31:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:31:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:31:46,949 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 19:31:49,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:31:49,122 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-07-22 19:31:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:31:49,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-07-22 19:31:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:31:49,133 INFO L225 Difference]: With dead ends: 3417 [2022-07-22 19:31:49,133 INFO L226 Difference]: Without dead ends: 3084 [2022-07-22 19:31:49,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:31:49,136 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17371 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:31:49,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 17371 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:31:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-07-22 19:31:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-07-22 19:31:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-22 19:31:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-07-22 19:31:49,196 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-07-22 19:31:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:31:49,196 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-07-22 19:31:49,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 19:31:49,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-07-22 19:31:49,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:31:49,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:31:49,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:49,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:31:49,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:31:49,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:31:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-07-22 19:31:49,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:31:49,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701002583] [2022-07-22 19:31:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:31:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:31:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:31:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:31:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:31:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:31:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:31:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:49,356 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 19:31:49,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:31:49,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701002583] [2022-07-22 19:31:49,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701002583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:31:49,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:31:49,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:31:49,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93312607] [2022-07-22 19:31:49,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:31:49,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:31:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:31:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:31:49,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:31:49,361 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:31:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:31:51,890 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2022-07-22 19:31:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:31:51,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:31:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:31:51,902 INFO L225 Difference]: With dead ends: 4265 [2022-07-22 19:31:51,902 INFO L226 Difference]: Without dead ends: 3582 [2022-07-22 19:31:51,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:31:51,905 INFO L413 NwaCegarLoop]: 4895 mSDtfsCounter, 5420 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 22471 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:31:51,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 22471 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 19:31:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-07-22 19:31:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2022-07-22 19:31:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-22 19:31:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2022-07-22 19:31:51,978 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2022-07-22 19:31:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:31:51,978 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2022-07-22 19:31:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:31:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2022-07-22 19:31:51,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:31:51,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:31:51,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:51,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:31:51,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:31:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:31:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2022-07-22 19:31:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:31:51,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430601378] [2022-07-22 19:31:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:31:51,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:31:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:31:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:31:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:52,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:31:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:52,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:31:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:31:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:52,087 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 19:31:52,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:31:52,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430601378] [2022-07-22 19:31:52,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430601378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:31:52,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:31:52,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:31:52,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787138855] [2022-07-22 19:31:52,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:31:52,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:31:52,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:31:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:31:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:31:52,090 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:31:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:31:54,518 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2022-07-22 19:31:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:31:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:31:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:31:54,536 INFO L225 Difference]: With dead ends: 5515 [2022-07-22 19:31:54,537 INFO L226 Difference]: Without dead ends: 4507 [2022-07-22 19:31:54,543 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 19:31:54,553 INFO L413 NwaCegarLoop]: 4887 mSDtfsCounter, 5417 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5435 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:31:54,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5435 Valid, 22463 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:31:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-07-22 19:31:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2022-07-22 19:31:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-22 19:31:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2022-07-22 19:31:54,687 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2022-07-22 19:31:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:31:54,688 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2022-07-22 19:31:54,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:31:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2022-07-22 19:31:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:31:54,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:31:54,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:54,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:31:54,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:31:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:31:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2022-07-22 19:31:54,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:31:54,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960825811] [2022-07-22 19:31:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:31:54,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:31:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:31:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:31:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:54,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:31:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:31:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:31:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:54,825 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 19:31:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:31:54,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960825811] [2022-07-22 19:31:54,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960825811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:31:54,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:31:54,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:31:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805811358] [2022-07-22 19:31:54,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:31:54,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:31:54,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:31:54,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:31:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:31:54,828 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:31:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:31:57,259 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2022-07-22 19:31:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:31:57,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:31:57,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:31:57,285 INFO L225 Difference]: With dead ends: 7918 [2022-07-22 19:31:57,286 INFO L226 Difference]: Without dead ends: 6259 [2022-07-22 19:31:57,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:31:57,295 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5413 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22459 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:31:57,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5431 Valid, 22459 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:31:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-07-22 19:31:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2022-07-22 19:31:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-22 19:31:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2022-07-22 19:31:57,510 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2022-07-22 19:31:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:31:57,511 INFO L495 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2022-07-22 19:31:57,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:31:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2022-07-22 19:31:57,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:31:57,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:31:57,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:57,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:31:57,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:31:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:31:57,516 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2022-07-22 19:31:57,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:31:57,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602422395] [2022-07-22 19:31:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:31:57,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:31:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:31:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:31:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:31:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:31:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:31:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:31:57,660 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 19:31:57,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:31:57,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602422395] [2022-07-22 19:31:57,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602422395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:31:57,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:31:57,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:31:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078457211] [2022-07-22 19:31:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:31:57,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:31:57,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:31:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:31:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:31:57,661 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:00,761 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2022-07-22 19:32:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:32:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:00,809 INFO L225 Difference]: With dead ends: 12723 [2022-07-22 19:32:00,809 INFO L226 Difference]: Without dead ends: 9761 [2022-07-22 19:32:00,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:32:00,820 INFO L413 NwaCegarLoop]: 4879 mSDtfsCounter, 5409 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:00,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22455 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 19:32:00,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-07-22 19:32:01,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2022-07-22 19:32:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-22 19:32:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2022-07-22 19:32:01,114 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2022-07-22 19:32:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:01,115 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2022-07-22 19:32:01,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2022-07-22 19:32:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:01,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:01,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:32:01,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2022-07-22 19:32:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:01,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166548237] [2022-07-22 19:32:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:01,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:01,248 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 19:32:01,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:01,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166548237] [2022-07-22 19:32:01,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166548237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:01,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582373158] [2022-07-22 19:32:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:01,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:01,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:01,250 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:04,539 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2022-07-22 19:32:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:32:04,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:04,580 INFO L225 Difference]: With dead ends: 22332 [2022-07-22 19:32:04,581 INFO L226 Difference]: Without dead ends: 16759 [2022-07-22 19:32:04,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:32:04,597 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22449 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:04,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22449 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 19:32:04,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2022-07-22 19:32:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2022-07-22 19:32:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-22 19:32:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2022-07-22 19:32:05,191 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2022-07-22 19:32:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:05,191 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2022-07-22 19:32:05,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:05,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2022-07-22 19:32:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:05,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:05,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:05,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:32:05,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2022-07-22 19:32:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:05,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052841582] [2022-07-22 19:32:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:05,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:05,315 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 19:32:05,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:05,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052841582] [2022-07-22 19:32:05,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052841582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:05,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:05,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:05,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527957442] [2022-07-22 19:32:05,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:05,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:05,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:05,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:05,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:05,317 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:07,484 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2022-07-22 19:32:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:32:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:07,528 INFO L225 Difference]: With dead ends: 27774 [2022-07-22 19:32:07,528 INFO L226 Difference]: Without dead ends: 16966 [2022-07-22 19:32:07,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:32:07,556 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 4998 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:07,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21241 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:32:07,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2022-07-22 19:32:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2022-07-22 19:32:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-22 19:32:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2022-07-22 19:32:08,137 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2022-07-22 19:32:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:08,137 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2022-07-22 19:32:08,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:08,138 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2022-07-22 19:32:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:08,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:08,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:08,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:32:08,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2022-07-22 19:32:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:08,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238351573] [2022-07-22 19:32:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:08,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:08,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:08,267 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 19:32:08,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:08,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238351573] [2022-07-22 19:32:08,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238351573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:08,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:08,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843318662] [2022-07-22 19:32:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:08,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:08,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:08,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:08,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:08,270 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:12,359 INFO L93 Difference]: Finished difference Result 41484 states and 66747 transitions. [2022-07-22 19:32:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:32:12,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:12,434 INFO L225 Difference]: With dead ends: 41484 [2022-07-22 19:32:12,435 INFO L226 Difference]: Without dead ends: 30676 [2022-07-22 19:32:12,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:32:12,463 INFO L413 NwaCegarLoop]: 4859 mSDtfsCounter, 5396 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:12,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 22435 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:32:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2022-07-22 19:32:13,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 23513. [2022-07-22 19:32:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 21752 states have (on average 1.5849117322545054) internal successors, (34475), 21818 states have internal predecessors, (34475), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-22 19:32:13,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 37878 transitions. [2022-07-22 19:32:13,778 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 37878 transitions. Word has length 167 [2022-07-22 19:32:13,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:13,779 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 37878 transitions. [2022-07-22 19:32:13,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 37878 transitions. [2022-07-22 19:32:13,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:13,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:13,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:13,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:32:13,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:13,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:13,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2022-07-22 19:32:13,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:13,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082120330] [2022-07-22 19:32:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:13,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:13,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:13,917 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 19:32:13,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:13,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082120330] [2022-07-22 19:32:13,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082120330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:13,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:13,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299347006] [2022-07-22 19:32:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:13,919 INFO L87 Difference]: Start difference. First operand 23513 states and 37878 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:19,888 INFO L93 Difference]: Finished difference Result 79923 states and 128881 transitions. [2022-07-22 19:32:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:32:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:20,144 INFO L225 Difference]: With dead ends: 79923 [2022-07-22 19:32:20,144 INFO L226 Difference]: Without dead ends: 58550 [2022-07-22 19:32:20,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:32:20,200 INFO L413 NwaCegarLoop]: 4854 mSDtfsCounter, 5395 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 22430 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:20,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 22430 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:32:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2022-07-22 19:32:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 44702. [2022-07-22 19:32:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44702 states, 41213 states have (on average 1.5697231456093952) internal successors, (64693), 41343 states have internal predecessors, (64693), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-22 19:32:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44702 states to 44702 states and 72178 transitions. [2022-07-22 19:32:22,971 INFO L78 Accepts]: Start accepts. Automaton has 44702 states and 72178 transitions. Word has length 167 [2022-07-22 19:32:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:22,973 INFO L495 AbstractCegarLoop]: Abstraction has 44702 states and 72178 transitions. [2022-07-22 19:32:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 44702 states and 72178 transitions. [2022-07-22 19:32:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:22,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:22,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:22,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:32:22,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2022-07-22 19:32:22,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041260251] [2022-07-22 19:32:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:22,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:23,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:23,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:23,111 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 19:32:23,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:23,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041260251] [2022-07-22 19:32:23,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041260251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:23,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:23,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:23,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56719365] [2022-07-22 19:32:23,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:23,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:23,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:23,114 INFO L87 Difference]: Start difference. First operand 44702 states and 72178 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:33,468 INFO L93 Difference]: Finished difference Result 156798 states and 254991 transitions. [2022-07-22 19:32:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:32:33,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:33,891 INFO L225 Difference]: With dead ends: 156798 [2022-07-22 19:32:33,892 INFO L226 Difference]: Without dead ends: 114236 [2022-07-22 19:32:34,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:32:34,013 INFO L413 NwaCegarLoop]: 4849 mSDtfsCounter, 5394 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 22425 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:34,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 22425 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 19:32:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114236 states. [2022-07-22 19:32:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114236 to 87207. [2022-07-22 19:32:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5613740001495104) internal successors, (125319), 80520 states have internal predecessors, (125319), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-22 19:32:40,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142426 transitions. [2022-07-22 19:32:40,286 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142426 transitions. Word has length 167 [2022-07-22 19:32:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:40,288 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142426 transitions. [2022-07-22 19:32:40,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142426 transitions. [2022-07-22 19:32:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:40,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:40,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:40,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:32:40,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:40,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2022-07-22 19:32:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:40,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374206726] [2022-07-22 19:32:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:40,486 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 19:32:40,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:40,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374206726] [2022-07-22 19:32:40,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374206726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:40,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:40,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:40,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149843449] [2022-07-22 19:32:40,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:40,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:40,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:40,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:40,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:40,488 INFO L87 Difference]: Start difference. First operand 87207 states and 142426 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:50,820 INFO L93 Difference]: Finished difference Result 200924 states and 334667 transitions. [2022-07-22 19:32:50,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:32:50,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-22 19:32:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:51,537 INFO L225 Difference]: With dead ends: 200924 [2022-07-22 19:32:51,538 INFO L226 Difference]: Without dead ends: 115857 [2022-07-22 19:32:51,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:32:51,707 INFO L413 NwaCegarLoop]: 4529 mSDtfsCounter, 5153 mSDsluCounter, 12560 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 17089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:51,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 17089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:32:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115857 states. [2022-07-22 19:32:57,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115857 to 87207. [2022-07-22 19:32:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5581719867434154) internal successors, (125062), 80520 states have internal predecessors, (125062), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-22 19:32:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142169 transitions. [2022-07-22 19:32:58,318 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142169 transitions. Word has length 167 [2022-07-22 19:32:58,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:58,319 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142169 transitions. [2022-07-22 19:32:58,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 19:32:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142169 transitions. [2022-07-22 19:32:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:32:58,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:58,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:58,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 19:32:58,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:58,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2022-07-22 19:32:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:58,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979180984] [2022-07-22 19:32:58,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:32:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:32:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:32:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:32:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,483 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 19:32:58,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:58,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979180984] [2022-07-22 19:32:58,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979180984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:58,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:58,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973140346] [2022-07-22 19:32:58,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:58,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:58,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:58,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:58,485 INFO L87 Difference]: Start difference. First operand 87207 states and 142169 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)