./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.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 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:40:15,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:40:15,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:40:15,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:40:15,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:40:15,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:40:15,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:40:15,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:40:15,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:40:15,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:40:15,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:40:15,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:40:15,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:40:15,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:40:15,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:40:15,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:40:15,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:40:15,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:40:15,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:40:15,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:40:15,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:40:15,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:40:15,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:40:15,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:40:15,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:40:15,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:40:15,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:40:15,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:40:15,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:40:15,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:40:15,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:40:15,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:40:15,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:40:15,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:40:15,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:40:15,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:40:15,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:40:15,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:40:15,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:40:15,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:40:15,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:40:15,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:40:15,958 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:40:15,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:40:15,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:40:15,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:40:15,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:40:15,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:40:15,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:40:15,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:40:15,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:40:15,992 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:40:15,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:40:15,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:40:15,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:40:15,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:40:15,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:40:15,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:40:15,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:40:15,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:40:15,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:40:15,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:40:15,996 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:40:15,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:40:15,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:40:15,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:40:15,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:40:15,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:40:15,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:40:15,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:40:15,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:40:15,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:40:15,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:40:15,999 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:40:15,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:40:16,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:40:16,000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 [2022-07-19 17:40:16,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:40:16,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:40:16,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:40:16,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:40:16,283 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:40:16,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2022-07-19 17:40:16,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afb5d30e/46412e1c41604fcc82924dd0abb99172/FLAG7a8333e34 [2022-07-19 17:40:16,835 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:40:16,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2022-07-19 17:40:16,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afb5d30e/46412e1c41604fcc82924dd0abb99172/FLAG7a8333e34 [2022-07-19 17:40:17,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2afb5d30e/46412e1c41604fcc82924dd0abb99172 [2022-07-19 17:40:17,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:40:17,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:40:17,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:40:17,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:40:17,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:40:17,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a79161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17, skipping insertion in model container [2022-07-19 17:40:17,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:40:17,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:40:17,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2022-07-19 17:40:17,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:40:17,590 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:40:17,601 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2022-07-19 17:40:17,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:40:17,679 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:40:17,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17 WrapperNode [2022-07-19 17:40:17,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:40:17,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:40:17,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:40:17,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:40:17,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,758 INFO L137 Inliner]: procedures = 54, calls = 70, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 911 [2022-07-19 17:40:17,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:40:17,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:40:17,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:40:17,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:40:17,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:40:17,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:40:17,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:40:17,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:40:17,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (1/1) ... [2022-07-19 17:40:17,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:40:17,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:40:17,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:40:17,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:40:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:40:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 17:40:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 17:40:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 17:40:17,901 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 17:40:17,901 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 17:40:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 17:40:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 17:40:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 17:40:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 17:40:17,902 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 17:40:17,902 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 17:40:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 17:40:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:40:17,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:40:17,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:40:18,016 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:40:18,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:40:18,786 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:40:18,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:40:18,796 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 17:40:18,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:40:18 BoogieIcfgContainer [2022-07-19 17:40:18,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:40:18,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:40:18,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:40:18,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:40:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:40:17" (1/3) ... [2022-07-19 17:40:18,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36d7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:40:18, skipping insertion in model container [2022-07-19 17:40:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:40:17" (2/3) ... [2022-07-19 17:40:18,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b36d7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:40:18, skipping insertion in model container [2022-07-19 17:40:18,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:40:18" (3/3) ... [2022-07-19 17:40:18,805 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.c [2022-07-19 17:40:18,817 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:40:18,818 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:40:18,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:40:18,873 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6600adfa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ee5e835 [2022-07-19 17:40:18,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:40:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 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) [2022-07-19 17:40:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:18,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:18,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:18,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:18,902 INFO L85 PathProgramCache]: Analyzing trace with hash 824370330, now seen corresponding path program 1 times [2022-07-19 17:40:18,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:18,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203752148] [2022-07-19 17:40:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203752148] [2022-07-19 17:40:19,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203752148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:19,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:19,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:40:19,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447458914] [2022-07-19 17:40:19,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:19,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:40:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:40:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:40:19,456 INFO L87 Difference]: Start difference. First operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 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 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:21,386 INFO L93 Difference]: Finished difference Result 954 states and 1591 transitions. [2022-07-19 17:40:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:40:21,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:21,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:21,413 INFO L225 Difference]: With dead ends: 954 [2022-07-19 17:40:21,413 INFO L226 Difference]: Without dead ends: 555 [2022-07-19 17:40:21,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:40:21,422 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1103 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:21,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1129 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 17:40:21,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-07-19 17:40:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 402. [2022-07-19 17:40:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 368 states have (on average 1.578804347826087) internal successors, (581), 369 states have internal predecessors, (581), 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) [2022-07-19 17:40:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 635 transitions. [2022-07-19 17:40:21,509 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 635 transitions. Word has length 188 [2022-07-19 17:40:21,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:21,510 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 635 transitions. [2022-07-19 17:40:21,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 635 transitions. [2022-07-19 17:40:21,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:21,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:21,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:21,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:40:21,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash 804829208, now seen corresponding path program 1 times [2022-07-19 17:40:21,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:21,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76628083] [2022-07-19 17:40:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:21,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:21,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:21,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:21,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:21,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:21,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76628083] [2022-07-19 17:40:21,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76628083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:21,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:21,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:40:21,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656181169] [2022-07-19 17:40:21,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:21,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:40:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:40:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:40:21,764 INFO L87 Difference]: Start difference. First operand 402 states and 635 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:25,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:25,037 INFO L93 Difference]: Finished difference Result 1490 states and 2402 transitions. [2022-07-19 17:40:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:40:25,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:25,047 INFO L225 Difference]: With dead ends: 1490 [2022-07-19 17:40:25,048 INFO L226 Difference]: Without dead ends: 1109 [2022-07-19 17:40:25,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:40:25,058 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1668 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:25,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1765 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 17:40:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-07-19 17:40:25,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 804. [2022-07-19 17:40:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 741 states have (on average 1.5897435897435896) internal successors, (1178), 743 states have internal predecessors, (1178), 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) [2022-07-19 17:40:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1279 transitions. [2022-07-19 17:40:25,138 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1279 transitions. Word has length 188 [2022-07-19 17:40:25,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:25,139 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1279 transitions. [2022-07-19 17:40:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1279 transitions. [2022-07-19 17:40:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:25,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:25,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:40:25,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1471509604, now seen corresponding path program 1 times [2022-07-19 17:40:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:25,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287163118] [2022-07-19 17:40:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:25,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:25,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:25,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287163118] [2022-07-19 17:40:25,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287163118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:25,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:25,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:25,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656406195] [2022-07-19 17:40:25,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:25,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:25,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:25,385 INFO L87 Difference]: Start difference. First operand 804 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:29,244 INFO L93 Difference]: Finished difference Result 2468 states and 3985 transitions. [2022-07-19 17:40:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:29,255 INFO L225 Difference]: With dead ends: 2468 [2022-07-19 17:40:29,256 INFO L226 Difference]: Without dead ends: 1685 [2022-07-19 17:40:29,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:29,265 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1706 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:29,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 3079 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 17:40:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-07-19 17:40:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1177. [2022-07-19 17:40:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1085 states have (on average 1.5824884792626728) internal successors, (1717), 1088 states have internal predecessors, (1717), 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) [2022-07-19 17:40:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1864 transitions. [2022-07-19 17:40:29,371 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1864 transitions. Word has length 188 [2022-07-19 17:40:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:29,372 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1864 transitions. [2022-07-19 17:40:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1864 transitions. [2022-07-19 17:40:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:29,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:29,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:29,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:40:29,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1098849370, now seen corresponding path program 1 times [2022-07-19 17:40:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:29,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109183669] [2022-07-19 17:40:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:29,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:29,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:29,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109183669] [2022-07-19 17:40:29,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109183669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:29,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:29,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094130442] [2022-07-19 17:40:29,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:29,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:29,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:29,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:29,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:29,586 INFO L87 Difference]: Start difference. First operand 1177 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:33,421 INFO L93 Difference]: Finished difference Result 3909 states and 6298 transitions. [2022-07-19 17:40:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:33,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:33,437 INFO L225 Difference]: With dead ends: 3909 [2022-07-19 17:40:33,438 INFO L226 Difference]: Without dead ends: 2753 [2022-07-19 17:40:33,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:33,446 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 1700 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:33,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 3067 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3343 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 17:40:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-07-19 17:40:33,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 1927. [2022-07-19 17:40:33,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1777 states have (on average 1.5768148564997186) internal successors, (2802), 1782 states have internal predecessors, (2802), 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) [2022-07-19 17:40:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3045 transitions. [2022-07-19 17:40:33,600 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3045 transitions. Word has length 188 [2022-07-19 17:40:33,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:33,601 INFO L495 AbstractCegarLoop]: Abstraction has 1927 states and 3045 transitions. [2022-07-19 17:40:33,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:33,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3045 transitions. [2022-07-19 17:40:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:33,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:33,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:33,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:40:33,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:33,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1669121176, now seen corresponding path program 1 times [2022-07-19 17:40:33,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:33,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144492369] [2022-07-19 17:40:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:33,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:33,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144492369] [2022-07-19 17:40:33,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144492369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:33,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:33,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000435505] [2022-07-19 17:40:33,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:33,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:33,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:33,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:33,840 INFO L87 Difference]: Start difference. First operand 1927 states and 3045 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:37,427 INFO L93 Difference]: Finished difference Result 6685 states and 10723 transitions. [2022-07-19 17:40:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:37,452 INFO L225 Difference]: With dead ends: 6685 [2022-07-19 17:40:37,452 INFO L226 Difference]: Without dead ends: 4779 [2022-07-19 17:40:37,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:37,461 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 1699 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:37,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 3062 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 17:40:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2022-07-19 17:40:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 3428. [2022-07-19 17:40:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3162 states have (on average 1.5724225173940545) internal successors, (4972), 3171 states have internal predecessors, (4972), 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) [2022-07-19 17:40:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5413 transitions. [2022-07-19 17:40:37,737 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5413 transitions. Word has length 188 [2022-07-19 17:40:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:37,737 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5413 transitions. [2022-07-19 17:40:37,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5413 transitions. [2022-07-19 17:40:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:37,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:37,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:40:37,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1221976934, now seen corresponding path program 1 times [2022-07-19 17:40:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:37,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734288290] [2022-07-19 17:40:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:37,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:37,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:37,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734288290] [2022-07-19 17:40:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734288290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:37,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:37,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622936502] [2022-07-19 17:40:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:37,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:37,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:37,916 INFO L87 Difference]: Start difference. First operand 3428 states and 5413 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:41,746 INFO L93 Difference]: Finished difference Result 12236 states and 19589 transitions. [2022-07-19 17:40:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:41,789 INFO L225 Difference]: With dead ends: 12236 [2022-07-19 17:40:41,790 INFO L226 Difference]: Without dead ends: 8829 [2022-07-19 17:40:41,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:41,804 INFO L413 NwaCegarLoop]: 1057 mSDtfsCounter, 1698 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 3411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:41,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 3057 Invalid, 3411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 17:40:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8829 states. [2022-07-19 17:40:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8829 to 6437. [2022-07-19 17:40:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6437 states, 5939 states have (on average 1.5696245159117697) internal successors, (9322), 5956 states have internal predecessors, (9322), 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) [2022-07-19 17:40:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 10177 transitions. [2022-07-19 17:40:42,318 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 10177 transitions. Word has length 188 [2022-07-19 17:40:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:42,319 INFO L495 AbstractCegarLoop]: Abstraction has 6437 states and 10177 transitions. [2022-07-19 17:40:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 10177 transitions. [2022-07-19 17:40:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:42,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:42,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:42,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:40:42,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2007974824, now seen corresponding path program 1 times [2022-07-19 17:40:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:42,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743866337] [2022-07-19 17:40:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:42,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:42,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:42,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:42,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743866337] [2022-07-19 17:40:42,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743866337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:42,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:42,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457815909] [2022-07-19 17:40:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:42,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:42,516 INFO L87 Difference]: Start difference. First operand 6437 states and 10177 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:46,582 INFO L93 Difference]: Finished difference Result 23339 states and 37383 transitions. [2022-07-19 17:40:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:46,657 INFO L225 Difference]: With dead ends: 23339 [2022-07-19 17:40:46,657 INFO L226 Difference]: Without dead ends: 16923 [2022-07-19 17:40:46,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:46,686 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1807 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:46,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 2109 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2958 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 17:40:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16923 states. [2022-07-19 17:40:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16923 to 12470. [2022-07-19 17:40:47,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12470 states, 11508 states have (on average 1.5679527285366701) internal successors, (18044), 11541 states have internal predecessors, (18044), 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) [2022-07-19 17:40:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12470 states to 12470 states and 19781 transitions. [2022-07-19 17:40:47,847 INFO L78 Accepts]: Start accepts. Automaton has 12470 states and 19781 transitions. Word has length 188 [2022-07-19 17:40:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 12470 states and 19781 transitions. [2022-07-19 17:40:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 12470 states and 19781 transitions. [2022-07-19 17:40:47,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:47,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:47,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:47,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:40:47,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1340592934, now seen corresponding path program 1 times [2022-07-19 17:40:47,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:47,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704636718] [2022-07-19 17:40:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:48,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:48,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:48,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704636718] [2022-07-19 17:40:48,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704636718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:48,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:48,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:48,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256553126] [2022-07-19 17:40:48,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:48,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:48,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:48,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:48,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:48,029 INFO L87 Difference]: Start difference. First operand 12470 states and 19781 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:40:53,200 INFO L93 Difference]: Finished difference Result 45546 states and 73165 transitions. [2022-07-19 17:40:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:40:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:40:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:40:53,326 INFO L225 Difference]: With dead ends: 45546 [2022-07-19 17:40:53,327 INFO L226 Difference]: Without dead ends: 33097 [2022-07-19 17:40:53,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:40:53,380 INFO L413 NwaCegarLoop]: 1047 mSDtfsCounter, 1696 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:40:53,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 3047 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 17:40:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33097 states. [2022-07-19 17:40:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33097 to 24567. [2022-07-19 17:40:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24567 states, 22677 states have (on average 1.5669621202099042) internal successors, (35534), 22742 states have internal predecessors, (35534), 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) [2022-07-19 17:40:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24567 states to 24567 states and 39197 transitions. [2022-07-19 17:40:55,282 INFO L78 Accepts]: Start accepts. Automaton has 24567 states and 39197 transitions. Word has length 188 [2022-07-19 17:40:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:40:55,283 INFO L495 AbstractCegarLoop]: Abstraction has 24567 states and 39197 transitions. [2022-07-19 17:40:55,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:40:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24567 states and 39197 transitions. [2022-07-19 17:40:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:40:55,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:40:55,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:40:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:40:55,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:40:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:40:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash 759145496, now seen corresponding path program 1 times [2022-07-19 17:40:55,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:40:55,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906574160] [2022-07-19 17:40:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:40:55,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:40:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:40:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:40:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:40:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:40:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:40:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:40:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:40:55,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:40:55,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906574160] [2022-07-19 17:40:55,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906574160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:40:55,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:40:55,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:40:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200365676] [2022-07-19 17:40:55,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:40:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:40:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:40:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:40:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:40:55,459 INFO L87 Difference]: Start difference. First operand 24567 states and 39197 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:03,379 INFO L93 Difference]: Finished difference Result 89961 states and 145331 transitions. [2022-07-19 17:41:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:41:03,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:41:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:03,659 INFO L225 Difference]: With dead ends: 89961 [2022-07-19 17:41:03,659 INFO L226 Difference]: Without dead ends: 65415 [2022-07-19 17:41:03,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:41:03,756 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1695 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3303 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:03,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 3042 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3303 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 17:41:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65415 states. [2022-07-19 17:41:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65415 to 48824. [2022-07-19 17:41:07,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48824 states, 45078 states have (on average 1.5663516571276455) internal successors, (70608), 45207 states have internal predecessors, (70608), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-19 17:41:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48824 states to 48824 states and 78609 transitions. [2022-07-19 17:41:07,194 INFO L78 Accepts]: Start accepts. Automaton has 48824 states and 78609 transitions. Word has length 188 [2022-07-19 17:41:07,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:07,194 INFO L495 AbstractCegarLoop]: Abstraction has 48824 states and 78609 transitions. [2022-07-19 17:41:07,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 48824 states and 78609 transitions. [2022-07-19 17:41:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:41:07,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:07,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:07,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:41:07,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1103973658, now seen corresponding path program 1 times [2022-07-19 17:41:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:07,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036262946] [2022-07-19 17:41:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:07,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:07,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:41:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:41:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:41:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:41:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:07,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036262946] [2022-07-19 17:41:07,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036262946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:07,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:07,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961193298] [2022-07-19 17:41:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:07,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:07,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:07,379 INFO L87 Difference]: Start difference. First operand 48824 states and 78609 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:14,459 INFO L93 Difference]: Finished difference Result 115381 states and 189072 transitions. [2022-07-19 17:41:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:41:14,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:41:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:14,735 INFO L225 Difference]: With dead ends: 115381 [2022-07-19 17:41:14,735 INFO L226 Difference]: Without dead ends: 66578 [2022-07-19 17:41:14,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:41:14,857 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1209 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:14,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1667 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 17:41:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66578 states. [2022-07-19 17:41:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66578 to 48824. [2022-07-19 17:41:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48824 states, 45078 states have (on average 1.56348995075203) internal successors, (70479), 45207 states have internal predecessors, (70479), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-19 17:41:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48824 states to 48824 states and 78480 transitions. [2022-07-19 17:41:18,735 INFO L78 Accepts]: Start accepts. Automaton has 48824 states and 78480 transitions. Word has length 188 [2022-07-19 17:41:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:18,735 INFO L495 AbstractCegarLoop]: Abstraction has 48824 states and 78480 transitions. [2022-07-19 17:41:18,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 48824 states and 78480 transitions. [2022-07-19 17:41:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:41:18,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:18,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:18,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:41:18,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:18,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2084928472, now seen corresponding path program 1 times [2022-07-19 17:41:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:18,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081457945] [2022-07-19 17:41:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:41:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:18,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:41:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:41:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:18,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:41:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:18,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081457945] [2022-07-19 17:41:18,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081457945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:18,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:18,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79402915] [2022-07-19 17:41:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:18,932 INFO L87 Difference]: Start difference. First operand 48824 states and 78480 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:32,501 INFO L93 Difference]: Finished difference Result 178532 states and 290349 transitions. [2022-07-19 17:41:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:41:32,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-07-19 17:41:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:33,203 INFO L225 Difference]: With dead ends: 178532 [2022-07-19 17:41:33,204 INFO L226 Difference]: Without dead ends: 129729 [2022-07-19 17:41:33,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:41:33,327 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1686 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:33,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 3025 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 17:41:33,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129729 states. [2022-07-19 17:41:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129729 to 97723. [2022-07-19 17:41:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97723 states, 90265 states have (on average 1.5629202902564672) internal successors, (141077), 90522 states have internal predecessors, (141077), 5659 states have call successors, (5659), 1542 states have call predecessors, (5659), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-19 17:41:41,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97723 states to 97723 states and 159212 transitions. [2022-07-19 17:41:41,323 INFO L78 Accepts]: Start accepts. Automaton has 97723 states and 159212 transitions. Word has length 188 [2022-07-19 17:41:41,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:41,325 INFO L495 AbstractCegarLoop]: Abstraction has 97723 states and 159212 transitions. [2022-07-19 17:41:41,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:41,326 INFO L276 IsEmpty]: Start isEmpty. Operand 97723 states and 159212 transitions. [2022-07-19 17:41:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 17:41:41,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:41,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:41,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:41:41,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1473659414, now seen corresponding path program 1 times [2022-07-19 17:41:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:41,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052982806] [2022-07-19 17:41:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:41,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:41,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 17:41:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:41,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:41:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 17:41:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 17:41:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:41,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:41,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052982806] [2022-07-19 17:41:41,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052982806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:41,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:41,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:41,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638726666] [2022-07-19 17:41:41,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:41,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:41,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:41,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:41,545 INFO L87 Difference]: Start difference. First operand 97723 states and 159212 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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)