./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_label48+token_ring.13.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 29d311a340ddf06876d5e964efa5bbd1c7e50f9bc9213c2393be8e474d394757 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:21:04,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:21:04,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:21:04,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:21:04,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:21:04,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:21:04,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:21:04,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:21:04,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:21:04,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:21:04,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:21:04,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:21:04,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:21:04,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:21:04,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:21:04,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:21:04,834 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:21:04,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:21:04,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:21:04,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:21:04,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:21:04,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:21:04,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:21:04,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:21:04,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:21:04,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:21:04,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:21:04,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:21:04,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:21:04,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:21:04,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:21:04,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:21:04,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:21:04,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:21:04,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:21:04,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:21:04,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:21:04,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:21:04,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:21:04,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:21:04,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:21:04,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:21:04,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:21:04,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:21:04,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:21:04,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:21:04,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:21:04,879 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:21:04,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:21:04,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:21:04,880 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:21:04,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:21:04,880 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:21:04,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:21:04,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:21:04,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:21:04,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:21:04,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:21:04,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:21:04,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:21:04,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:21:04,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:21:04,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:21:04,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29d311a340ddf06876d5e964efa5bbd1c7e50f9bc9213c2393be8e474d394757 [2021-12-21 14:21:05,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:21:05,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:21:05,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:21:05,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:21:05,087 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:21:05,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.13.cil-2.c [2021-12-21 14:21:05,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66767f683/2c3f6039c96e498da2c555fa5b6561db/FLAG82e390bc3 [2021-12-21 14:21:05,822 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:21:05,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.13.cil-2.c [2021-12-21 14:21:05,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66767f683/2c3f6039c96e498da2c555fa5b6561db/FLAG82e390bc3 [2021-12-21 14:21:05,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66767f683/2c3f6039c96e498da2c555fa5b6561db [2021-12-21 14:21:05,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:21:05,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:21:05,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:21:05,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:21:05,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:21:05,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:21:05" (1/1) ... [2021-12-21 14:21:05,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47514e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:05, skipping insertion in model container [2021-12-21 14:21:05,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:21:05" (1/1) ... [2021-12-21 14:21:05,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:21:06,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:21:07,256 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_label48+token_ring.13.cil-2.c[375709,375722] [2021-12-21 14:21:07,277 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_label48+token_ring.13.cil-2.c[383339,383352] [2021-12-21 14:21:07,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:21:07,480 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:21:08,094 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_label48+token_ring.13.cil-2.c[375709,375722] [2021-12-21 14:21:08,101 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_label48+token_ring.13.cil-2.c[383339,383352] [2021-12-21 14:21:08,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:21:08,156 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:21:08,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08 WrapperNode [2021-12-21 14:21:08,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:21:08,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:21:08,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:21:08,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:21:08,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,491 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-21 14:21:08,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:21:08,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:21:08,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:21:08,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:21:08,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:21:08,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:21:08,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:21:08,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:21:08,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (1/1) ... [2021-12-21 14:21:08,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:21:08,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:21:08,952 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) [2021-12-21 14:21:08,962 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 [2021-12-21 14:21:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:21:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:21:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:21:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:21:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:21:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:21:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:21:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:21:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:21:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:21:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:21:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:21:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:21:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:21:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:21:08,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:21:09,098 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:21:09,103 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:21:13,818 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:21:13,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:21:13,837 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-21 14:21:13,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:21:13 BoogieIcfgContainer [2021-12-21 14:21:13,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:21:13,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:21:13,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:21:13,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:21:13,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:21:05" (1/3) ... [2021-12-21 14:21:13,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bffa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:21:13, skipping insertion in model container [2021-12-21 14:21:13,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:08" (2/3) ... [2021-12-21 14:21:13,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bffa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:21:13, skipping insertion in model container [2021-12-21 14:21:13,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:21:13" (3/3) ... [2021-12-21 14:21:13,847 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.13.cil-2.c [2021-12-21 14:21:13,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:21:13,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:21:13,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:21:13,892 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:21:13,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:21:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:21:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:13,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:13,972 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:13,972 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-21 14:21:13,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:13,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977422192] [2021-12-21 14:21:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:13,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:14,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977422192] [2021-12-21 14:21:14,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977422192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:14,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:14,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:21:14,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764729478] [2021-12-21 14:21:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:14,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:21:14,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:14,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:21:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:21:14,410 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:21:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:15,908 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-21 14:21:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:21:15,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:15,927 INFO L225 Difference]: With dead ends: 5325 [2021-12-21 14:21:15,927 INFO L226 Difference]: Without dead ends: 2676 [2021-12-21 14:21:15,934 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:15,936 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:15,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:21:15,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-21 14:21:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-21 14:21:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:21:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-21 14:21:16,035 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-21 14:21:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:16,035 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-21 14:21:16,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:21:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-21 14:21:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:16,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:16,041 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:16,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:21:16,041 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:16,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-21 14:21:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:16,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979799583] [2021-12-21 14:21:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:16,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:16,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:16,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979799583] [2021-12-21 14:21:16,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979799583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:16,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:16,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:21:16,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061715320] [2021-12-21 14:21:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:16,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:21:16,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:21:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:21:16,216 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:21:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:17,500 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-21 14:21:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:21:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:17,510 INFO L225 Difference]: With dead ends: 3061 [2021-12-21 14:21:17,510 INFO L226 Difference]: Without dead ends: 2676 [2021-12-21 14:21:17,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:21:17,513 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:17,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 14:21:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-21 14:21:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-21 14:21:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:21:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-21 14:21:17,571 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-21 14:21:17,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:17,571 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-21 14:21:17,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:21:17,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-21 14:21:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:17,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:17,574 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:17,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:21:17,574 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:17,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-21 14:21:17,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:17,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274010071] [2021-12-21 14:21:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:17,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:17,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274010071] [2021-12-21 14:21:17,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274010071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:17,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:17,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:21:17,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677616699] [2021-12-21 14:21:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:17,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:21:17,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:21:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:21:17,749 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-21 14:21:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:20,424 INFO L93 Difference]: Finished difference Result 3611 states and 6359 transitions. [2021-12-21 14:21:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:21:20,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:20,439 INFO L225 Difference]: With dead ends: 3611 [2021-12-21 14:21:20,439 INFO L226 Difference]: Without dead ends: 3230 [2021-12-21 14:21:20,443 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:20,444 INFO L933 BasicCegarLoop]: 4715 mSDtfsCounter, 5624 mSDsluCounter, 12944 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 17659 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:20,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5644 Valid, 17659 Invalid, 2215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:21:20,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2021-12-21 14:21:20,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2925. [2021-12-21 14:21:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.7948269835721775) internal successors, (5135), 2864 states have internal predecessors, (5135), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-21 14:21:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5236 transitions. [2021-12-21 14:21:20,578 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5236 transitions. Word has length 189 [2021-12-21 14:21:20,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:20,578 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 5236 transitions. [2021-12-21 14:21:20,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-21 14:21:20,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5236 transitions. [2021-12-21 14:21:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:20,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:20,581 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:20,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:21:20,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 671278923, now seen corresponding path program 1 times [2021-12-21 14:21:20,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:20,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443012005] [2021-12-21 14:21:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:20,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:20,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:20,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443012005] [2021-12-21 14:21:20,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443012005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:20,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:20,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:20,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091186897] [2021-12-21 14:21:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:20,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:20,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:20,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:20,726 INFO L87 Difference]: Start difference. First operand 2925 states and 5236 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:23,909 INFO L93 Difference]: Finished difference Result 4589 states and 7942 transitions. [2021-12-21 14:21:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:21:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:23,930 INFO L225 Difference]: With dead ends: 4589 [2021-12-21 14:21:23,931 INFO L226 Difference]: Without dead ends: 3806 [2021-12-21 14:21:23,936 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:23,945 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 5662 mSDsluCounter, 17899 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 22935 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:23,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5682 Valid, 22935 Invalid, 3365 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:21:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-12-21 14:21:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3298. [2021-12-21 14:21:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 3205 states have (on average 1.7703588143525741) internal successors, (5674), 3209 states have internal predecessors, (5674), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-21 14:21:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5821 transitions. [2021-12-21 14:21:24,086 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5821 transitions. Word has length 189 [2021-12-21 14:21:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:24,086 INFO L470 AbstractCegarLoop]: Abstraction has 3298 states and 5821 transitions. [2021-12-21 14:21:24,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5821 transitions. [2021-12-21 14:21:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:24,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:24,093 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:24,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:21:24,094 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:24,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1053329399, now seen corresponding path program 1 times [2021-12-21 14:21:24,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:24,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038897583] [2021-12-21 14:21:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:24,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:24,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:24,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:24,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038897583] [2021-12-21 14:21:24,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038897583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:24,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:24,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:24,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894781546] [2021-12-21 14:21:24,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:24,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:24,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:24,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:24,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:24,257 INFO L87 Difference]: Start difference. First operand 3298 states and 5821 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:27,387 INFO L93 Difference]: Finished difference Result 6030 states and 10255 transitions. [2021-12-21 14:21:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:21:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:27,404 INFO L225 Difference]: With dead ends: 6030 [2021-12-21 14:21:27,404 INFO L226 Difference]: Without dead ends: 4874 [2021-12-21 14:21:27,407 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:27,408 INFO L933 BasicCegarLoop]: 5024 mSDtfsCounter, 5656 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5676 SdHoareTripleChecker+Valid, 22919 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:27,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5676 Valid, 22919 Invalid, 3360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:21:27,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-12-21 14:21:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4048. [2021-12-21 14:21:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 3897 states have (on average 1.7344110854503465) internal successors, (6759), 3903 states have internal predecessors, (6759), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-21 14:21:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 7002 transitions. [2021-12-21 14:21:27,556 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 7002 transitions. Word has length 189 [2021-12-21 14:21:27,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:27,556 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 7002 transitions. [2021-12-21 14:21:27,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 7002 transitions. [2021-12-21 14:21:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:27,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:27,559 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:27,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:21:27,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:27,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash -483057593, now seen corresponding path program 1 times [2021-12-21 14:21:27,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:27,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966424428] [2021-12-21 14:21:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:27,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:27,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:27,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966424428] [2021-12-21 14:21:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966424428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:27,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:27,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935625616] [2021-12-21 14:21:27,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:27,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:27,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:27,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:27,700 INFO L87 Difference]: Start difference. First operand 4048 states and 7002 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:30,883 INFO L93 Difference]: Finished difference Result 8806 states and 14680 transitions. [2021-12-21 14:21:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:21:30,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:30,909 INFO L225 Difference]: With dead ends: 8806 [2021-12-21 14:21:30,909 INFO L226 Difference]: Without dead ends: 6900 [2021-12-21 14:21:30,917 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:30,918 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 5655 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22914 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:30,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22914 Invalid, 3352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:21:30,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2021-12-21 14:21:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 5549. [2021-12-21 14:21:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5282 states have (on average 1.690458159787959) internal successors, (8929), 5292 states have internal predecessors, (8929), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-21 14:21:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 9370 transitions. [2021-12-21 14:21:31,135 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 9370 transitions. Word has length 189 [2021-12-21 14:21:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:31,136 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 9370 transitions. [2021-12-21 14:21:31,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 9370 transitions. [2021-12-21 14:21:31,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:31,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:31,139 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:31,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:21:31,139 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:31,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:31,139 INFO L85 PathProgramCache]: Analyzing trace with hash 920811593, now seen corresponding path program 1 times [2021-12-21 14:21:31,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:31,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809874608] [2021-12-21 14:21:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:31,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:31,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:31,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:31,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809874608] [2021-12-21 14:21:31,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809874608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:31,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:31,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:31,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817752633] [2021-12-21 14:21:31,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:31,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:31,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:31,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:31,273 INFO L87 Difference]: Start difference. First operand 5549 states and 9370 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:34,891 INFO L93 Difference]: Finished difference Result 14357 states and 23546 transitions. [2021-12-21 14:21:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:21:34,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:34,934 INFO L225 Difference]: With dead ends: 14357 [2021-12-21 14:21:34,934 INFO L226 Difference]: Without dead ends: 10950 [2021-12-21 14:21:34,945 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:34,947 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5654 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3260 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5674 SdHoareTripleChecker+Valid, 22909 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:34,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5674 Valid, 22909 Invalid, 3344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3260 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:21:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2021-12-21 14:21:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 8558. [2021-12-21 14:21:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8059 states have (on average 1.6477230425611118) internal successors, (13279), 8077 states have internal predecessors, (13279), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-21 14:21:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 14134 transitions. [2021-12-21 14:21:35,405 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 14134 transitions. Word has length 189 [2021-12-21 14:21:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:35,405 INFO L470 AbstractCegarLoop]: Abstraction has 8558 states and 14134 transitions. [2021-12-21 14:21:35,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 14134 transitions. [2021-12-21 14:21:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:35,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:35,410 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:35,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:21:35,410 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:35,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 134813703, now seen corresponding path program 1 times [2021-12-21 14:21:35,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:35,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132789851] [2021-12-21 14:21:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:35,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:35,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:35,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:35,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132789851] [2021-12-21 14:21:35,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132789851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:35,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543396072] [2021-12-21 14:21:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:35,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:35,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:35,543 INFO L87 Difference]: Start difference. First operand 8558 states and 14134 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:39,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:39,313 INFO L93 Difference]: Finished difference Result 25460 states and 41340 transitions. [2021-12-21 14:21:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:21:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:39,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:39,359 INFO L225 Difference]: With dead ends: 25460 [2021-12-21 14:21:39,360 INFO L226 Difference]: Without dead ends: 19044 [2021-12-21 14:21:39,380 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:39,381 INFO L933 BasicCegarLoop]: 4750 mSDtfsCounter, 5763 mSDsluCounter, 17208 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5783 SdHoareTripleChecker+Valid, 21958 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:39,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5783 Valid, 21958 Invalid, 3016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 14:21:39,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2021-12-21 14:21:40,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 14591. [2021-12-21 14:21:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.6143968300557676) internal successors, (22001), 13662 states have internal predecessors, (22001), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-21 14:21:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23738 transitions. [2021-12-21 14:21:40,188 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23738 transitions. Word has length 189 [2021-12-21 14:21:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 14591 states and 23738 transitions. [2021-12-21 14:21:40,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23738 transitions. [2021-12-21 14:21:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:40,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:40,195 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:40,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:21:40,195 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash 802195593, now seen corresponding path program 1 times [2021-12-21 14:21:40,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:40,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145072850] [2021-12-21 14:21:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:40,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:40,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:40,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145072850] [2021-12-21 14:21:40,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145072850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:40,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:40,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:40,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163283607] [2021-12-21 14:21:40,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:40,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:40,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:40,311 INFO L87 Difference]: Start difference. First operand 14591 states and 23738 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:43,114 INFO L93 Difference]: Finished difference Result 31774 states and 51709 transitions. [2021-12-21 14:21:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:21:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:43,169 INFO L225 Difference]: With dead ends: 31774 [2021-12-21 14:21:43,170 INFO L226 Difference]: Without dead ends: 19325 [2021-12-21 14:21:43,201 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:43,203 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 5161 mSDsluCounter, 16825 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5182 SdHoareTripleChecker+Valid, 21462 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:43,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5182 Valid, 21462 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:21:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19325 states. [2021-12-21 14:21:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19325 to 14591. [2021-12-21 14:21:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.611975344878192) internal successors, (21968), 13662 states have internal predecessors, (21968), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-21 14:21:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23705 transitions. [2021-12-21 14:21:44,133 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23705 transitions. Word has length 189 [2021-12-21 14:21:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:44,134 INFO L470 AbstractCegarLoop]: Abstraction has 14591 states and 23705 transitions. [2021-12-21 14:21:44,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:44,134 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23705 transitions. [2021-12-21 14:21:44,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:44,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:44,140 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:44,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:21:44,141 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:44,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:44,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1393033273, now seen corresponding path program 1 times [2021-12-21 14:21:44,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:44,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565736653] [2021-12-21 14:21:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:44,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:44,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:44,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565736653] [2021-12-21 14:21:44,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565736653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:44,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:44,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:44,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813358698] [2021-12-21 14:21:44,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:44,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:44,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:44,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:44,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:44,263 INFO L87 Difference]: Start difference. First operand 14591 states and 23705 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:21:49,625 INFO L93 Difference]: Finished difference Result 47633 states and 76890 transitions. [2021-12-21 14:21:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:21:49,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:21:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:21:49,722 INFO L225 Difference]: With dead ends: 47633 [2021-12-21 14:21:49,723 INFO L226 Difference]: Without dead ends: 35184 [2021-12-21 14:21:49,755 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:21:49,756 INFO L933 BasicCegarLoop]: 4998 mSDtfsCounter, 5645 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3225 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5665 SdHoareTripleChecker+Valid, 22893 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:21:49,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5665 Valid, 22893 Invalid, 3309 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3225 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 14:21:49,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35184 states. [2021-12-21 14:21:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35184 to 26721. [2021-12-21 14:21:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26721 states, 24830 states have (on average 1.5892066049134113) internal successors, (39460), 24896 states have internal predecessors, (39460), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-12-21 14:21:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26721 states to 26721 states and 43123 transitions. [2021-12-21 14:21:51,545 INFO L78 Accepts]: Start accepts. Automaton has 26721 states and 43123 transitions. Word has length 189 [2021-12-21 14:21:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:21:51,547 INFO L470 AbstractCegarLoop]: Abstraction has 26721 states and 43123 transitions. [2021-12-21 14:21:51,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:21:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 26721 states and 43123 transitions. [2021-12-21 14:21:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-21 14:21:51,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:21:51,560 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:21:51,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:21:51,561 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:21:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:21:51,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1048205111, now seen corresponding path program 1 times [2021-12-21 14:21:51,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:21:51,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055025387] [2021-12-21 14:21:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:21:51,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:21:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:21:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:21:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:21:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:21:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:51,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:21:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:21:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:21:51,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:21:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055025387] [2021-12-21 14:21:51,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055025387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:21:51,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:21:51,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:21:51,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821902996] [2021-12-21 14:21:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:21:51,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:21:51,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:21:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:21:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:21:51,706 INFO L87 Difference]: Start difference. First operand 26721 states and 43123 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:22:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:00,062 INFO L93 Difference]: Finished difference Result 92049 states and 148866 transitions. [2021-12-21 14:22:00,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:00,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2021-12-21 14:22:00,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:00,331 INFO L225 Difference]: With dead ends: 92049 [2021-12-21 14:22:00,332 INFO L226 Difference]: Without dead ends: 67470 [2021-12-21 14:22:00,385 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:22:00,385 INFO L933 BasicCegarLoop]: 4991 mSDtfsCounter, 5647 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 22886 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:00,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 22886 Invalid, 3301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:22:00,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67470 states.