./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.03.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 4996a252ab084c920e1b9a19c3119ce328d4cb97d6d45029062c9dac50449e19 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:14:24,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:14:24,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:14:24,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:14:24,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:14:24,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:14:24,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:14:24,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:14:24,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:14:24,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:14:24,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:14:24,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:14:24,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:14:24,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:14:24,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:14:24,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:14:24,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:14:24,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:14:24,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:14:24,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:14:24,962 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:14:24,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:14:24,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:14:24,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:14:24,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:14:24,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:14:24,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:14:24,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:14:24,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:14:24,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:14:24,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:14:24,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:14:24,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:14:24,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:14:24,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:14:24,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:14:24,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:14:24,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:14:24,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:14:24,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:14:24,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:14:24,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:14:24,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:14:24,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:14:24,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:14:24,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:14:24,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:14:24,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:14:24,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:14:24,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:14:24,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:14:25,000 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:14:25,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:14:25,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:14:25,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:14:25,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:14:25,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:14:25,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:14:25,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:14:25,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:14:25,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:14:25,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:14:25,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:14:25,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:14:25,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:14:25,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:14:25,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:14:25,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:14:25,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:14:25,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:14:25,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:14:25,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:14:25,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:14:25,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:14:25,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:14:25,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:14:25,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4996a252ab084c920e1b9a19c3119ce328d4cb97d6d45029062c9dac50449e19 [2022-07-21 05:14:25,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:14:25,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:14:25,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:14:25,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:14:25,293 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:14:25,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2022-07-21 05:14:25,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f6965b4/8b35ac26b0e743c0b1aff859965dc99e/FLAGff1b8036f [2022-07-21 05:14:25,734 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:14:25,741 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2022-07-21 05:14:25,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f6965b4/8b35ac26b0e743c0b1aff859965dc99e/FLAGff1b8036f [2022-07-21 05:14:25,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f6965b4/8b35ac26b0e743c0b1aff859965dc99e [2022-07-21 05:14:25,766 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:14:25,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:14:25,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:14:25,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:14:25,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:14:25,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:25" (1/1) ... [2022-07-21 05:14:25,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633ce66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:25, skipping insertion in model container [2022-07-21 05:14:25,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:25" (1/1) ... [2022-07-21 05:14:25,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:14:25,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:14:25,907 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.03.cil-2.c[671,684] [2022-07-21 05:14:25,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:14:25,989 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:14:25,996 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.03.cil-2.c[671,684] [2022-07-21 05:14:26,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:14:26,028 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:14:26,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26 WrapperNode [2022-07-21 05:14:26,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:14:26,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:14:26,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:14:26,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:14:26,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,073 INFO L137 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 331 [2022-07-21 05:14:26,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:14:26,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:14:26,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:14:26,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:14:26,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:14:26,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:14:26,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:14:26,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:14:26,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (1/1) ... [2022-07-21 05:14:26,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:14:26,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:14:26,140 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) [2022-07-21 05:14:26,143 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 [2022-07-21 05:14:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:14:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:14:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:14:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:14:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:14:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:14:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:14:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:14:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:14:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:14:26,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:14:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:14:26,168 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:14:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:14:26,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:14:26,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:14:26,225 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:14:26,226 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:14:26,572 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:14:26,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:14:26,583 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 05:14:26,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:26 BoogieIcfgContainer [2022-07-21 05:14:26,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:14:26,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:14:26,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:14:26,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:14:26,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:14:25" (1/3) ... [2022-07-21 05:14:26,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2120b946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:26, skipping insertion in model container [2022-07-21 05:14:26,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26" (2/3) ... [2022-07-21 05:14:26,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2120b946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:26, skipping insertion in model container [2022-07-21 05:14:26,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:26" (3/3) ... [2022-07-21 05:14:26,593 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.c [2022-07-21 05:14:26,604 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:14:26,604 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:14:26,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:14:26,663 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@586ef6b6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@513b3229 [2022-07-21 05:14:26,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:14:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 132 states have (on average 1.5909090909090908) internal successors, (210), 134 states have internal predecessors, (210), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-21 05:14:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:26,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:26,688 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] [2022-07-21 05:14:26,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:26,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1701588439, now seen corresponding path program 1 times [2022-07-21 05:14:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:26,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378855941] [2022-07-21 05:14:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:26,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:26,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:27,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378855941] [2022-07-21 05:14:27,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378855941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:27,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:27,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:14:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526589367] [2022-07-21 05:14:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:27,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:14:27,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:14:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:14:27,047 INFO L87 Difference]: Start difference. First operand has 157 states, 132 states have (on average 1.5909090909090908) internal successors, (210), 134 states have internal predecessors, (210), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-07-21 05:14:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:27,478 INFO L93 Difference]: Finished difference Result 348 states and 549 transitions. [2022-07-21 05:14:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:14:27,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:27,495 INFO L225 Difference]: With dead ends: 348 [2022-07-21 05:14:27,495 INFO L226 Difference]: Without dead ends: 195 [2022-07-21 05:14:27,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:27,504 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 357 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:27,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 409 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:14:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-21 05:14:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 152. [2022-07-21 05:14:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-21 05:14:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2022-07-21 05:14:27,560 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 78 [2022-07-21 05:14:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:27,561 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2022-07-21 05:14:27,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-07-21 05:14:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2022-07-21 05:14:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:27,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:27,567 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] [2022-07-21 05:14:27,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:14:27,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1208962265, now seen corresponding path program 1 times [2022-07-21 05:14:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:27,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263412025] [2022-07-21 05:14:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:27,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:27,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263412025] [2022-07-21 05:14:27,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263412025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:27,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:27,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:14:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107654462] [2022-07-21 05:14:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:27,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:14:27,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:14:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:14:27,657 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 05:14:28,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:28,365 INFO L93 Difference]: Finished difference Result 520 states and 792 transitions. [2022-07-21 05:14:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:14:28,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:28,369 INFO L225 Difference]: With dead ends: 520 [2022-07-21 05:14:28,369 INFO L226 Difference]: Without dead ends: 379 [2022-07-21 05:14:28,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:14:28,371 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 521 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:28,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 633 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:14:28,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-21 05:14:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 294. [2022-07-21 05:14:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.5059760956175299) internal successors, (378), 253 states have internal predecessors, (378), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-21 05:14:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 439 transitions. [2022-07-21 05:14:28,393 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 439 transitions. Word has length 78 [2022-07-21 05:14:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:28,394 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 439 transitions. [2022-07-21 05:14:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 05:14:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 439 transitions. [2022-07-21 05:14:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:28,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:28,398 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] [2022-07-21 05:14:28,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:14:28,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:28,399 INFO L85 PathProgramCache]: Analyzing trace with hash -971914069, now seen corresponding path program 1 times [2022-07-21 05:14:28,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:28,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015949697] [2022-07-21 05:14:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:28,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:28,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:28,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:28,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015949697] [2022-07-21 05:14:28,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015949697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:28,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:28,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:14:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681784748] [2022-07-21 05:14:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:14:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:14:28,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:14:28,506 INFO L87 Difference]: Start difference. First operand 294 states and 439 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:29,352 INFO L93 Difference]: Finished difference Result 850 states and 1291 transitions. [2022-07-21 05:14:29,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:14:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:29,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:29,355 INFO L225 Difference]: With dead ends: 850 [2022-07-21 05:14:29,355 INFO L226 Difference]: Without dead ends: 567 [2022-07-21 05:14:29,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:14:29,357 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 518 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:29,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1075 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:14:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-07-21 05:14:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 428. [2022-07-21 05:14:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 366 states have (on average 1.5) internal successors, (549), 369 states have internal predecessors, (549), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-21 05:14:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 636 transitions. [2022-07-21 05:14:29,392 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 636 transitions. Word has length 78 [2022-07-21 05:14:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:29,392 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 636 transitions. [2022-07-21 05:14:29,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 636 transitions. [2022-07-21 05:14:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:29,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:29,394 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] [2022-07-21 05:14:29,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:14:29,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:29,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1389310675, now seen corresponding path program 1 times [2022-07-21 05:14:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:29,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415205836] [2022-07-21 05:14:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:29,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:29,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415205836] [2022-07-21 05:14:29,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415205836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:29,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:29,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:14:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619825394] [2022-07-21 05:14:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:29,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:14:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:14:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:14:29,466 INFO L87 Difference]: Start difference. First operand 428 states and 636 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:30,200 INFO L93 Difference]: Finished difference Result 1333 states and 2016 transitions. [2022-07-21 05:14:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:14:30,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:30,204 INFO L225 Difference]: With dead ends: 1333 [2022-07-21 05:14:30,204 INFO L226 Difference]: Without dead ends: 916 [2022-07-21 05:14:30,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:14:30,206 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 514 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:30,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 1068 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:14:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-07-21 05:14:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 699. [2022-07-21 05:14:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 599 states have (on average 1.4958263772954925) internal successors, (896), 604 states have internal predecessors, (896), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-21 05:14:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1039 transitions. [2022-07-21 05:14:30,249 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1039 transitions. Word has length 78 [2022-07-21 05:14:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:30,249 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1039 transitions. [2022-07-21 05:14:30,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1039 transitions. [2022-07-21 05:14:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:30,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:30,251 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] [2022-07-21 05:14:30,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:14:30,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:30,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash -710038421, now seen corresponding path program 1 times [2022-07-21 05:14:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:30,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634793051] [2022-07-21 05:14:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:30,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:30,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:30,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:30,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634793051] [2022-07-21 05:14:30,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634793051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:30,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:30,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:14:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883328488] [2022-07-21 05:14:30,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:30,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:14:30,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:14:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:14:30,314 INFO L87 Difference]: Start difference. First operand 699 states and 1039 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:31,121 INFO L93 Difference]: Finished difference Result 2478 states and 3729 transitions. [2022-07-21 05:14:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:14:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:31,128 INFO L225 Difference]: With dead ends: 2478 [2022-07-21 05:14:31,129 INFO L226 Difference]: Without dead ends: 1790 [2022-07-21 05:14:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:14:31,131 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 648 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:31,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1053 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:14:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-07-21 05:14:31,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1232. [2022-07-21 05:14:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1060 states have (on average 1.4962264150943396) internal successors, (1586), 1069 states have internal predecessors, (1586), 109 states have call successors, (109), 54 states have call predecessors, (109), 62 states have return successors, (144), 116 states have call predecessors, (144), 109 states have call successors, (144) [2022-07-21 05:14:31,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1839 transitions. [2022-07-21 05:14:31,176 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1839 transitions. Word has length 78 [2022-07-21 05:14:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:31,176 INFO L495 AbstractCegarLoop]: Abstraction has 1232 states and 1839 transitions. [2022-07-21 05:14:31,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:31,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1839 transitions. [2022-07-21 05:14:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:31,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:31,178 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] [2022-07-21 05:14:31,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:14:31,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1251536237, now seen corresponding path program 1 times [2022-07-21 05:14:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:31,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261602498] [2022-07-21 05:14:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:31,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261602498] [2022-07-21 05:14:31,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261602498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:31,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:31,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:14:31,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314921745] [2022-07-21 05:14:31,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:31,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:14:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:14:31,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:14:31,236 INFO L87 Difference]: Start difference. First operand 1232 states and 1839 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:32,140 INFO L93 Difference]: Finished difference Result 4433 states and 6675 transitions. [2022-07-21 05:14:32,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:14:32,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:32,163 INFO L225 Difference]: With dead ends: 4433 [2022-07-21 05:14:32,164 INFO L226 Difference]: Without dead ends: 3212 [2022-07-21 05:14:32,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:14:32,182 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 534 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:32,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1088 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:14:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-07-21 05:14:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2253. [2022-07-21 05:14:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 1941 states have (on average 1.4961360123647605) internal successors, (2904), 1958 states have internal predecessors, (2904), 193 states have call successors, (193), 102 states have call predecessors, (193), 118 states have return successors, (290), 208 states have call predecessors, (290), 193 states have call successors, (290) [2022-07-21 05:14:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3387 transitions. [2022-07-21 05:14:32,284 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3387 transitions. Word has length 78 [2022-07-21 05:14:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:32,284 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 3387 transitions. [2022-07-21 05:14:32,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3387 transitions. [2022-07-21 05:14:32,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:32,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:32,287 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] [2022-07-21 05:14:32,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:14:32,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:32,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1453360171, now seen corresponding path program 1 times [2022-07-21 05:14:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:32,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636684477] [2022-07-21 05:14:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:32,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:32,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:32,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636684477] [2022-07-21 05:14:32,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636684477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:32,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:32,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:14:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983131971] [2022-07-21 05:14:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:32,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:14:32,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:14:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:14:32,379 INFO L87 Difference]: Start difference. First operand 2253 states and 3387 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:33,228 INFO L93 Difference]: Finished difference Result 8076 states and 12205 transitions. [2022-07-21 05:14:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:14:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:33,249 INFO L225 Difference]: With dead ends: 8076 [2022-07-21 05:14:33,250 INFO L226 Difference]: Without dead ends: 5834 [2022-07-21 05:14:33,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:14:33,256 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 597 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:33,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 723 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:14:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2022-07-21 05:14:33,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 4326. [2022-07-21 05:14:33,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3742 states have (on average 1.4991982896846605) internal successors, (5610), 3775 states have internal predecessors, (5610), 353 states have call successors, (353), 198 states have call predecessors, (353), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2022-07-21 05:14:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6591 transitions. [2022-07-21 05:14:33,444 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6591 transitions. Word has length 78 [2022-07-21 05:14:33,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:33,445 INFO L495 AbstractCegarLoop]: Abstraction has 4326 states and 6591 transitions. [2022-07-21 05:14:33,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6591 transitions. [2022-07-21 05:14:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:33,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:33,449 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] [2022-07-21 05:14:33,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:14:33,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:33,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2014059949, now seen corresponding path program 1 times [2022-07-21 05:14:33,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:33,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513438207] [2022-07-21 05:14:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:33,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:33,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:33,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:33,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:33,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513438207] [2022-07-21 05:14:33,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513438207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:33,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:33,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:14:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747142429] [2022-07-21 05:14:33,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:14:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:33,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:14:33,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:14:33,501 INFO L87 Difference]: Start difference. First operand 4326 states and 6591 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:34,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:34,539 INFO L93 Difference]: Finished difference Result 15135 states and 23151 transitions. [2022-07-21 05:14:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:14:34,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:34,584 INFO L225 Difference]: With dead ends: 15135 [2022-07-21 05:14:34,584 INFO L226 Difference]: Without dead ends: 10820 [2022-07-21 05:14:34,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:14:34,602 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 528 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:34,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1017 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:14:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10820 states. [2022-07-21 05:14:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10820 to 8443. [2022-07-21 05:14:34,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 7339 states have (on average 1.5032020711268566) internal successors, (11032), 7404 states have internal predecessors, (11032), 653 states have call successors, (653), 386 states have call predecessors, (653), 450 states have return successors, (1446), 716 states have call predecessors, (1446), 653 states have call successors, (1446) [2022-07-21 05:14:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 13131 transitions. [2022-07-21 05:14:34,984 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 13131 transitions. Word has length 78 [2022-07-21 05:14:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:34,985 INFO L495 AbstractCegarLoop]: Abstraction has 8443 states and 13131 transitions. [2022-07-21 05:14:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 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) [2022-07-21 05:14:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 13131 transitions. [2022-07-21 05:14:34,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:14:34,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:34,992 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] [2022-07-21 05:14:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:14:34,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1847178261, now seen corresponding path program 1 times [2022-07-21 05:14:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:34,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120018480] [2022-07-21 05:14:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:35,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:35,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:14:35,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:35,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120018480] [2022-07-21 05:14:35,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120018480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:35,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:14:35,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:14:35,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653877751] [2022-07-21 05:14:35,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:35,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:14:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:14:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:14:35,047 INFO L87 Difference]: Start difference. First operand 8443 states and 13131 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 05:14:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:36,189 INFO L93 Difference]: Finished difference Result 23912 states and 36955 transitions. [2022-07-21 05:14:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:14:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 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 78 [2022-07-21 05:14:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:36,258 INFO L225 Difference]: With dead ends: 23912 [2022-07-21 05:14:36,258 INFO L226 Difference]: Without dead ends: 15481 [2022-07-21 05:14:36,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:14:36,286 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 674 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:36,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 879 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:14:36,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15481 states. [2022-07-21 05:14:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15481 to 12662. [2022-07-21 05:14:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12662 states, 10979 states have (on average 1.489024501320703) internal successors, (16348), 11109 states have internal predecessors, (16348), 1002 states have call successors, (1002), 584 states have call predecessors, (1002), 680 states have return successors, (2039), 1032 states have call predecessors, (2039), 1002 states have call successors, (2039) [2022-07-21 05:14:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12662 states to 12662 states and 19389 transitions. [2022-07-21 05:14:36,800 INFO L78 Accepts]: Start accepts. Automaton has 12662 states and 19389 transitions. Word has length 78 [2022-07-21 05:14:36,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:36,800 INFO L495 AbstractCegarLoop]: Abstraction has 12662 states and 19389 transitions. [2022-07-21 05:14:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 05:14:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 12662 states and 19389 transitions. [2022-07-21 05:14:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 05:14:36,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:36,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:14:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:14:36,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2119452571, now seen corresponding path program 1 times [2022-07-21 05:14:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:36,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197774180] [2022-07-21 05:14:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:36,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:14:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:14:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:14:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 05:14:36,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:36,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197774180] [2022-07-21 05:14:36,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197774180] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:14:36,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753575688] [2022-07-21 05:14:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:36,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:14:36,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:14:36,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:14:36,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:14:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:37,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 05:14:37,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:14:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 05:14:37,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:14:37,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753575688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:37,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:14:37,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 05:14:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798065317] [2022-07-21 05:14:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:14:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:14:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:37,157 INFO L87 Difference]: Start difference. First operand 12662 states and 19389 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:14:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:37,993 INFO L93 Difference]: Finished difference Result 37603 states and 57917 transitions. [2022-07-21 05:14:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:14:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 127 [2022-07-21 05:14:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:38,084 INFO L225 Difference]: With dead ends: 37603 [2022-07-21 05:14:38,084 INFO L226 Difference]: Without dead ends: 24953 [2022-07-21 05:14:38,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:38,131 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 178 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:38,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 467 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:14:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24953 states. [2022-07-21 05:14:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24953 to 24755. [2022-07-21 05:14:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24755 states, 21452 states have (on average 1.4867145254521723) internal successors, (31893), 21711 states have internal predecessors, (31893), 1946 states have call successors, (1946), 1164 states have call predecessors, (1946), 1356 states have return successors, (3957), 1943 states have call predecessors, (3957), 1946 states have call successors, (3957) [2022-07-21 05:14:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24755 states to 24755 states and 37796 transitions. [2022-07-21 05:14:39,056 INFO L78 Accepts]: Start accepts. Automaton has 24755 states and 37796 transitions. Word has length 127 [2022-07-21 05:14:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:39,056 INFO L495 AbstractCegarLoop]: Abstraction has 24755 states and 37796 transitions. [2022-07-21 05:14:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:14:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 24755 states and 37796 transitions. [2022-07-21 05:14:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 05:14:39,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:39,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:14:39,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:14:39,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 05:14:39,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:39,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:39,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1105450171, now seen corresponding path program 1 times [2022-07-21 05:14:39,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:39,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555530380] [2022-07-21 05:14:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:39,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:14:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:14:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:14:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 05:14:39,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:39,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555530380] [2022-07-21 05:14:39,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555530380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:14:39,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490897107] [2022-07-21 05:14:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:39,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:14:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:14:39,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:14:39,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:14:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:39,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 05:14:39,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:14:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 05:14:39,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:14:39,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490897107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:39,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:14:39,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 05:14:39,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469942742] [2022-07-21 05:14:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:39,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:14:39,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:39,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:14:39,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:39,562 INFO L87 Difference]: Start difference. First operand 24755 states and 37796 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:14:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:41,068 INFO L93 Difference]: Finished difference Result 73512 states and 112918 transitions. [2022-07-21 05:14:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:14:41,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 127 [2022-07-21 05:14:41,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:41,245 INFO L225 Difference]: With dead ends: 73512 [2022-07-21 05:14:41,245 INFO L226 Difference]: Without dead ends: 48769 [2022-07-21 05:14:41,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:41,306 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 172 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:41,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 432 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:14:41,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48769 states. [2022-07-21 05:14:43,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48769 to 48375. [2022-07-21 05:14:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48375 states, 41898 states have (on average 1.4842951930879755) internal successors, (62189), 42415 states have internal predecessors, (62189), 3776 states have call successors, (3776), 2316 states have call predecessors, (3776), 2700 states have return successors, (7735), 3707 states have call predecessors, (7735), 3776 states have call successors, (7735) [2022-07-21 05:14:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48375 states to 48375 states and 73700 transitions. [2022-07-21 05:14:43,410 INFO L78 Accepts]: Start accepts. Automaton has 48375 states and 73700 transitions. Word has length 127 [2022-07-21 05:14:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:43,410 INFO L495 AbstractCegarLoop]: Abstraction has 48375 states and 73700 transitions. [2022-07-21 05:14:43,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 05:14:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 48375 states and 73700 transitions. [2022-07-21 05:14:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 05:14:43,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:43,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:14:43,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:14:43,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 05:14:43,690 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:43,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1762936357, now seen corresponding path program 1 times [2022-07-21 05:14:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:43,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772184271] [2022-07-21 05:14:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:43,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:14:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:14:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:14:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 05:14:43,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772184271] [2022-07-21 05:14:43,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772184271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:14:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588892553] [2022-07-21 05:14:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:14:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:14:43,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:14:43,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:14:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:43,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 05:14:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:14:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 05:14:43,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:14:43,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588892553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:43,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:14:43,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 05:14:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606517766] [2022-07-21 05:14:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:14:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:14:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:43,868 INFO L87 Difference]: Start difference. First operand 48375 states and 73700 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:14:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:46,702 INFO L93 Difference]: Finished difference Result 142912 states and 220157 transitions. [2022-07-21 05:14:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:14:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 127 [2022-07-21 05:14:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:47,060 INFO L225 Difference]: With dead ends: 142912 [2022-07-21 05:14:47,060 INFO L226 Difference]: Without dead ends: 94550 [2022-07-21 05:14:47,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:47,168 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 193 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:47,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 642 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:14:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94550 states. [2022-07-21 05:14:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94550 to 94550. [2022-07-21 05:14:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94550 states, 82006 states have (on average 1.4772943443162696) internal successors, (121147), 82908 states have internal predecessors, (121147), 7215 states have call successors, (7215), 4560 states have call predecessors, (7215), 5328 states have return successors, (16218), 7209 states have call predecessors, (16218), 7215 states have call successors, (16218) [2022-07-21 05:14:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94550 states to 94550 states and 144580 transitions. [2022-07-21 05:14:51,018 INFO L78 Accepts]: Start accepts. Automaton has 94550 states and 144580 transitions. Word has length 127 [2022-07-21 05:14:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:14:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 94550 states and 144580 transitions. [2022-07-21 05:14:51,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:14:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 94550 states and 144580 transitions. [2022-07-21 05:14:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-21 05:14:51,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:14:51,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:14:51,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 05:14:51,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:14:51,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:14:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:14:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash -915733099, now seen corresponding path program 1 times [2022-07-21 05:14:51,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:14:51,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536932804] [2022-07-21 05:14:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:14:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:14:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:14:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:14:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:14:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:14:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:14:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:14:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 05:14:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:14:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 05:14:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 05:14:51,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:14:51,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536932804] [2022-07-21 05:14:51,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536932804] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:14:51,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144508215] [2022-07-21 05:14:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:14:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:14:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:14:51,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:14:51,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:14:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:14:51,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 05:14:51,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:14:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 05:14:51,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:14:51,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144508215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:14:51,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:14:51,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 05:14:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132951756] [2022-07-21 05:14:51,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:14:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:14:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:14:51,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:14:51,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:51,723 INFO L87 Difference]: Start difference. First operand 94550 states and 144580 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 05:14:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:14:57,656 INFO L93 Difference]: Finished difference Result 280406 states and 431587 transitions. [2022-07-21 05:14:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:14:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 165 [2022-07-21 05:14:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:14:58,494 INFO L225 Difference]: With dead ends: 280406 [2022-07-21 05:14:58,495 INFO L226 Difference]: Without dead ends: 185874 [2022-07-21 05:14:58,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:14:58,952 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 128 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:14:58,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 443 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:14:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185874 states. [2022-07-21 05:15:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185874 to 184304. [2022-07-21 05:15:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184304 states, 159916 states have (on average 1.474780509767628) internal successors, (235841), 161718 states have internal predecessors, (235841), 13877 states have call successors, (13877), 8974 states have call predecessors, (13877), 10510 states have return successors, (31446), 13739 states have call predecessors, (31446), 13877 states have call successors, (31446) [2022-07-21 05:15:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184304 states to 184304 states and 281164 transitions. [2022-07-21 05:15:06,777 INFO L78 Accepts]: Start accepts. Automaton has 184304 states and 281164 transitions. Word has length 165 [2022-07-21 05:15:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:06,777 INFO L495 AbstractCegarLoop]: Abstraction has 184304 states and 281164 transitions. [2022-07-21 05:15:06,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 05:15:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 184304 states and 281164 transitions. [2022-07-21 05:15:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-21 05:15:07,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:07,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:15:07,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:15:07,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:15:07,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2014016585, now seen corresponding path program 1 times [2022-07-21 05:15:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:07,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463290539] [2022-07-21 05:15:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 05:15:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 05:15:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 05:15:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 05:15:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-21 05:15:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:15:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:15:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 05:15:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 05:15:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 05:15:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 05:15:07,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:07,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463290539] [2022-07-21 05:15:07,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463290539] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:15:07,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284955712] [2022-07-21 05:15:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:07,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:15:07,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:15:07,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:15:07,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:15:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:08,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 05:15:08,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:15:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 05:15:08,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:15:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284955712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:08,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:15:08,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 05:15:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031108194] [2022-07-21 05:15:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:15:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:15:08,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:15:08,112 INFO L87 Difference]: Start difference. First operand 184304 states and 281164 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)