./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/transmitter.04.cil.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 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:16:45,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:16:45,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:16:45,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:16:45,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:16:45,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:16:45,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:16:45,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:16:45,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:16:45,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:16:45,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:16:45,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:16:45,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:16:45,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:16:45,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:16:45,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:16:45,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:16:45,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:16:45,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:16:45,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:16:45,976 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:16:45,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:16:45,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:16:45,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:16:45,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:16:45,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:16:45,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:16:45,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:16:45,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:16:45,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:16:45,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:16:45,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:16:45,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:16:45,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:16:45,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:16:45,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:16:45,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:16:45,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:16:45,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:16:45,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:16:45,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:16:45,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:16:45,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:16:46,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:16:46,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:16:46,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:16:46,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:16:46,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:16:46,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:16:46,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:16:46,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:16:46,017 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:16:46,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:16:46,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:16:46,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:16:46,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:16:46,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:16:46,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:16:46,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:16:46,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:16:46,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:16:46,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:16:46,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:16:46,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:16:46,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:16:46,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:16:46,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:16:46,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:16:46,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:16:46,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:16:46,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa [2022-07-13 18:16:46,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:16:46,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:16:46,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:16:46,285 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:16:46,286 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:16:46,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-07-13 18:16:46,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b31d12a5/2f1d8f2d3b064f41889d3dba0df8313d/FLAG6c190eb19 [2022-07-13 18:16:46,715 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:16:46,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-07-13 18:16:46,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b31d12a5/2f1d8f2d3b064f41889d3dba0df8313d/FLAG6c190eb19 [2022-07-13 18:16:46,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b31d12a5/2f1d8f2d3b064f41889d3dba0df8313d [2022-07-13 18:16:46,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:16:46,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:16:46,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:16:46,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:16:46,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:16:46,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:46,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd6c8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46, skipping insertion in model container [2022-07-13 18:16:46,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:46,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:16:46,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:16:46,889 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/transmitter.04.cil.c[706,719] [2022-07-13 18:16:46,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:16:46,949 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:16:46,956 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/transmitter.04.cil.c[706,719] [2022-07-13 18:16:46,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:16:46,988 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:16:46,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46 WrapperNode [2022-07-13 18:16:46,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:16:46,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:16:46,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:16:46,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:16:47,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,043 INFO L137 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 378 [2022-07-13 18:16:47,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:16:47,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:16:47,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:16:47,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:16:47,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:16:47,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:16:47,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:16:47,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:16:47,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (1/1) ... [2022-07-13 18:16:47,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:16:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:16:47,144 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) [2022-07-13 18:16:47,146 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 [2022-07-13 18:16:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:16:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 18:16:47,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 18:16:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 18:16:47,181 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 18:16:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 18:16:47,181 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 18:16:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 18:16:47,181 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 18:16:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 18:16:47,181 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 18:16:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:16:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 18:16:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 18:16:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:16:47,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:16:47,283 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:16:47,284 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:16:47,609 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:16:47,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:16:47,616 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-13 18:16:47,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:16:47 BoogieIcfgContainer [2022-07-13 18:16:47,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:16:47,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:16:47,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:16:47,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:16:47,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:16:46" (1/3) ... [2022-07-13 18:16:47,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1677fc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:16:47, skipping insertion in model container [2022-07-13 18:16:47,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:16:46" (2/3) ... [2022-07-13 18:16:47,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1677fc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:16:47, skipping insertion in model container [2022-07-13 18:16:47,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:16:47" (3/3) ... [2022-07-13 18:16:47,624 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2022-07-13 18:16:47,635 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:16:47,635 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:16:47,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:16:47,678 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@792a71f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15ab2afa [2022-07-13 18:16:47,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:16:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 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) [2022-07-13 18:16:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:47,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:47,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:47,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1239760114, now seen corresponding path program 1 times [2022-07-13 18:16:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:47,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707700374] [2022-07-13 18:16:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:48,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:48,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707700374] [2022-07-13 18:16:48,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707700374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:48,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:48,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:16:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560126343] [2022-07-13 18:16:48,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:16:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:16:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:16:48,082 INFO L87 Difference]: Start difference. First operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 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 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-13 18:16:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:48,966 INFO L93 Difference]: Finished difference Result 613 states and 986 transitions. [2022-07-13 18:16:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:16:48,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:48,998 INFO L225 Difference]: With dead ends: 613 [2022-07-13 18:16:48,998 INFO L226 Difference]: Without dead ends: 439 [2022-07-13 18:16:49,002 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 [2022-07-13 18:16:49,004 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 612 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:49,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 766 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:16:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-13 18:16:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 335. [2022-07-13 18:16:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 294 states have internal predecessors, (441), 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) [2022-07-13 18:16:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2022-07-13 18:16:49,067 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 91 [2022-07-13 18:16:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:49,067 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2022-07-13 18:16:49,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-13 18:16:49,069 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2022-07-13 18:16:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:49,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:49,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:49,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:16:49,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -233016211, now seen corresponding path program 1 times [2022-07-13 18:16:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:49,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709862993] [2022-07-13 18:16:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:49,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:49,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:49,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:49,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709862993] [2022-07-13 18:16:49,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709862993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:49,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:49,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942562577] [2022-07-13 18:16:49,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:49,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:49,274 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:50,420 INFO L93 Difference]: Finished difference Result 1045 states and 1585 transitions. [2022-07-13 18:16:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:16:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:50,424 INFO L225 Difference]: With dead ends: 1045 [2022-07-13 18:16:50,425 INFO L226 Difference]: Without dead ends: 722 [2022-07-13 18:16:50,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:16:50,427 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 647 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:50,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1335 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:16:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-13 18:16:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 487. [2022-07-13 18:16:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 425 states have (on average 1.5011764705882353) internal successors, (638), 428 states have internal predecessors, (638), 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) [2022-07-13 18:16:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 725 transitions. [2022-07-13 18:16:50,453 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 725 transitions. Word has length 91 [2022-07-13 18:16:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:50,453 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 725 transitions. [2022-07-13 18:16:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 725 transitions. [2022-07-13 18:16:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:50,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:50,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:50,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:16:50,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:50,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1984614187, now seen corresponding path program 1 times [2022-07-13 18:16:50,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:50,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837428175] [2022-07-13 18:16:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:50,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:50,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:50,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837428175] [2022-07-13 18:16:50,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837428175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:50,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:50,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:50,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850466250] [2022-07-13 18:16:50,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:50,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:50,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:50,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:50,544 INFO L87 Difference]: Start difference. First operand 487 states and 725 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:51,619 INFO L93 Difference]: Finished difference Result 1603 states and 2422 transitions. [2022-07-13 18:16:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:16:51,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:51,625 INFO L225 Difference]: With dead ends: 1603 [2022-07-13 18:16:51,625 INFO L226 Difference]: Without dead ends: 1128 [2022-07-13 18:16:51,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:16:51,627 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 644 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:51,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1327 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:16:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-07-13 18:16:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 792. [2022-07-13 18:16:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 692 states have (on average 1.4927745664739884) internal successors, (1033), 697 states have internal predecessors, (1033), 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) [2022-07-13 18:16:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1176 transitions. [2022-07-13 18:16:51,659 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1176 transitions. Word has length 91 [2022-07-13 18:16:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:51,659 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1176 transitions. [2022-07-13 18:16:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1176 transitions. [2022-07-13 18:16:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:51,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:51,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:51,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:16:51,662 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:51,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash -576248659, now seen corresponding path program 1 times [2022-07-13 18:16:51,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:51,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996013075] [2022-07-13 18:16:51,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:51,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:51,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:51,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:51,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996013075] [2022-07-13 18:16:51,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996013075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:51,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:51,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432150895] [2022-07-13 18:16:51,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:51,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:51,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:51,734 INFO L87 Difference]: Start difference. First operand 792 states and 1176 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:52,767 INFO L93 Difference]: Finished difference Result 2682 states and 4037 transitions. [2022-07-13 18:16:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:16:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:52,776 INFO L225 Difference]: With dead ends: 2682 [2022-07-13 18:16:52,776 INFO L226 Difference]: Without dead ends: 1902 [2022-07-13 18:16:52,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:16:52,779 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 688 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:52,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 955 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:16:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-07-13 18:16:52,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1403. [2022-07-13 18:16:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1227 states have (on average 1.4857375713121435) internal successors, (1823), 1236 states have internal predecessors, (1823), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-13 18:16:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2084 transitions. [2022-07-13 18:16:52,842 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2084 transitions. Word has length 91 [2022-07-13 18:16:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:52,842 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 2084 transitions. [2022-07-13 18:16:52,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2084 transitions. [2022-07-13 18:16:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:52,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:52,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:52,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:16:52,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 310974187, now seen corresponding path program 1 times [2022-07-13 18:16:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:52,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669166894] [2022-07-13 18:16:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:52,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:52,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:52,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:52,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669166894] [2022-07-13 18:16:52,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669166894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:52,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:52,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319812705] [2022-07-13 18:16:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:52,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:52,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:52,909 INFO L87 Difference]: Start difference. First operand 1403 states and 2084 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:53,997 INFO L93 Difference]: Finished difference Result 4839 states and 7283 transitions. [2022-07-13 18:16:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:16:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:54,013 INFO L225 Difference]: With dead ends: 4839 [2022-07-13 18:16:54,013 INFO L226 Difference]: Without dead ends: 3448 [2022-07-13 18:16:54,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:16:54,018 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 636 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:54,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1319 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:16:54,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2022-07-13 18:16:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 2630. [2022-07-13 18:16:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2302 states have (on average 1.4808861859252824) internal successors, (3409), 2319 states have internal predecessors, (3409), 209 states have call successors, (209), 102 states have call predecessors, (209), 118 states have return successors, (306), 224 states have call predecessors, (306), 209 states have call successors, (306) [2022-07-13 18:16:54,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3924 transitions. [2022-07-13 18:16:54,134 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3924 transitions. Word has length 91 [2022-07-13 18:16:54,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:54,134 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 3924 transitions. [2022-07-13 18:16:54,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3924 transitions. [2022-07-13 18:16:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:54,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:54,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:16:54,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1600068371, now seen corresponding path program 1 times [2022-07-13 18:16:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:54,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197092872] [2022-07-13 18:16:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:54,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:54,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:54,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197092872] [2022-07-13 18:16:54,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197092872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:54,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:54,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:54,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280728335] [2022-07-13 18:16:54,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:54,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:54,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:54,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:54,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:54,207 INFO L87 Difference]: Start difference. First operand 2630 states and 3924 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:55,553 INFO L93 Difference]: Finished difference Result 10016 states and 15083 transitions. [2022-07-13 18:16:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:16:55,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:55,596 INFO L225 Difference]: With dead ends: 10016 [2022-07-13 18:16:55,596 INFO L226 Difference]: Without dead ends: 7398 [2022-07-13 18:16:55,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:16:55,607 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 665 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:55,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1305 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:16:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2022-07-13 18:16:55,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 5033. [2022-07-13 18:16:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4417 states have (on average 1.4831333484265339) internal successors, (6551), 4450 states have internal predecessors, (6551), 385 states have call successors, (385), 198 states have call predecessors, (385), 230 states have return successors, (660), 416 states have call predecessors, (660), 385 states have call successors, (660) [2022-07-13 18:16:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 7596 transitions. [2022-07-13 18:16:55,846 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 7596 transitions. Word has length 91 [2022-07-13 18:16:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:55,846 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 7596 transitions. [2022-07-13 18:16:55,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 7596 transitions. [2022-07-13 18:16:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:55,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:55,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:16:55,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1523167573, now seen corresponding path program 1 times [2022-07-13 18:16:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:55,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15181836] [2022-07-13 18:16:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:55,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:55,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:55,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:55,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15181836] [2022-07-13 18:16:55,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15181836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:55,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:55,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:55,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250809920] [2022-07-13 18:16:55,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:55,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:55,930 INFO L87 Difference]: Start difference. First operand 5033 states and 7596 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:16:57,429 INFO L93 Difference]: Finished difference Result 18865 states and 28677 transitions. [2022-07-13 18:16:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:16:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:16:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:16:57,517 INFO L225 Difference]: With dead ends: 18865 [2022-07-13 18:16:57,517 INFO L226 Difference]: Without dead ends: 13844 [2022-07-13 18:16:57,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:16:57,569 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 727 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:16:57,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1255 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:16:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13844 states. [2022-07-13 18:16:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13844 to 9836. [2022-07-13 18:16:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 8660 states have (on average 1.4851039260969976) internal successors, (12861), 8725 states have internal predecessors, (12861), 721 states have call successors, (721), 390 states have call predecessors, (721), 454 states have return successors, (1514), 784 states have call predecessors, (1514), 721 states have call successors, (1514) [2022-07-13 18:16:58,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 15096 transitions. [2022-07-13 18:16:58,063 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 15096 transitions. Word has length 91 [2022-07-13 18:16:58,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:16:58,065 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 15096 transitions. [2022-07-13 18:16:58,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:16:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 15096 transitions. [2022-07-13 18:16:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:16:58,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:16:58,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:16:58,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:16:58,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:16:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:16:58,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1804449069, now seen corresponding path program 1 times [2022-07-13 18:16:58,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:16:58,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165257145] [2022-07-13 18:16:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:16:58,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:16:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:16:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:16:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:16:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:16:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:16:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:16:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:16:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:16:58,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165257145] [2022-07-13 18:16:58,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165257145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:16:58,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:16:58,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:16:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542546461] [2022-07-13 18:16:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:16:58,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:16:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:16:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:16:58,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:16:58,215 INFO L87 Difference]: Start difference. First operand 9836 states and 15096 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:00,108 INFO L93 Difference]: Finished difference Result 35059 states and 54211 transitions. [2022-07-13 18:17:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:17:00,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:17:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:00,211 INFO L225 Difference]: With dead ends: 35059 [2022-07-13 18:17:00,211 INFO L226 Difference]: Without dead ends: 25235 [2022-07-13 18:17:00,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:17:00,245 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 629 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:00,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1292 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:17:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25235 states. [2022-07-13 18:17:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25235 to 19472. [2022-07-13 18:17:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19472 states, 17208 states have (on average 1.4898303114830311) internal successors, (25637), 17337 states have internal predecessors, (25637), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-13 18:17:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19472 states to 19472 states and 30674 transitions. [2022-07-13 18:17:01,306 INFO L78 Accepts]: Start accepts. Automaton has 19472 states and 30674 transitions. Word has length 91 [2022-07-13 18:17:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:01,307 INFO L495 AbstractCegarLoop]: Abstraction has 19472 states and 30674 transitions. [2022-07-13 18:17:01,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 19472 states and 30674 transitions. [2022-07-13 18:17:01,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:17:01,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:01,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:01,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:17:01,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1311822895, now seen corresponding path program 1 times [2022-07-13 18:17:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:01,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934383236] [2022-07-13 18:17:01,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:01,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:17:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:17:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:17:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:17:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:01,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:01,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934383236] [2022-07-13 18:17:01,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934383236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:01,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:01,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:01,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991886962] [2022-07-13 18:17:01,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:01,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:01,437 INFO L87 Difference]: Start difference. First operand 19472 states and 30674 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:03,180 INFO L93 Difference]: Finished difference Result 42704 states and 67413 transitions. [2022-07-13 18:17:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:17:03,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:17:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:03,288 INFO L225 Difference]: With dead ends: 42704 [2022-07-13 18:17:03,288 INFO L226 Difference]: Without dead ends: 23245 [2022-07-13 18:17:03,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:17:03,342 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:03,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 846 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:17:03,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23245 states. [2022-07-13 18:17:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23245 to 19475. [2022-07-13 18:17:04,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19475 states, 17211 states have (on average 1.4823078263900993) internal successors, (25512), 17340 states have internal predecessors, (25512), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-13 18:17:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19475 states to 19475 states and 30549 transitions. [2022-07-13 18:17:04,475 INFO L78 Accepts]: Start accepts. Automaton has 19475 states and 30549 transitions. Word has length 91 [2022-07-13 18:17:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:04,476 INFO L495 AbstractCegarLoop]: Abstraction has 19475 states and 30549 transitions. [2022-07-13 18:17:04,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:04,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19475 states and 30549 transitions. [2022-07-13 18:17:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:17:04,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:04,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:17:04,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:04,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1513646829, now seen corresponding path program 1 times [2022-07-13 18:17:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:04,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719438088] [2022-07-13 18:17:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:04,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:17:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:17:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:17:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:17:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:04,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:04,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719438088] [2022-07-13 18:17:04,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719438088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:04,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:04,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299304747] [2022-07-13 18:17:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:04,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:04,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:04,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:04,596 INFO L87 Difference]: Start difference. First operand 19475 states and 30549 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:07,005 INFO L93 Difference]: Finished difference Result 50130 states and 77784 transitions. [2022-07-13 18:17:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:17:07,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:17:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:07,145 INFO L225 Difference]: With dead ends: 50130 [2022-07-13 18:17:07,146 INFO L226 Difference]: Without dead ends: 30668 [2022-07-13 18:17:07,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:17:07,196 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:07,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 835 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:17:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30668 states. [2022-07-13 18:17:08,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30668 to 19862. [2022-07-13 18:17:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19862 states, 17598 states have (on average 1.4717013296965564) internal successors, (25899), 17727 states have internal predecessors, (25899), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-13 18:17:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19862 states to 19862 states and 30936 transitions. [2022-07-13 18:17:08,275 INFO L78 Accepts]: Start accepts. Automaton has 19862 states and 30936 transitions. Word has length 91 [2022-07-13 18:17:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:08,275 INFO L495 AbstractCegarLoop]: Abstraction has 19862 states and 30936 transitions. [2022-07-13 18:17:08,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 19862 states and 30936 transitions. [2022-07-13 18:17:08,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:17:08,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:08,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:08,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:17:08,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:08,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:08,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1905301461, now seen corresponding path program 1 times [2022-07-13 18:17:08,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:08,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2302672] [2022-07-13 18:17:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:08,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:17:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:17:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:17:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:17:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:08,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:08,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2302672] [2022-07-13 18:17:08,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2302672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:08,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:08,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:08,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809816189] [2022-07-13 18:17:08,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:08,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:08,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:08,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:08,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:08,386 INFO L87 Difference]: Start difference. First operand 19862 states and 30936 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:13,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:13,627 INFO L93 Difference]: Finished difference Result 88631 states and 139259 transitions. [2022-07-13 18:17:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 18:17:13,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:17:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:13,993 INFO L225 Difference]: With dead ends: 88631 [2022-07-13 18:17:13,994 INFO L226 Difference]: Without dead ends: 68782 [2022-07-13 18:17:14,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:17:14,101 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1546 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:14,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1131 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:17:14,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68782 states. [2022-07-13 18:17:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68782 to 56490. [2022-07-13 18:17:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56490 states, 49916 states have (on average 1.474136549402997) internal successors, (73583), 50431 states have internal predecessors, (73583), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-07-13 18:17:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56490 states to 56490 states and 88086 transitions. [2022-07-13 18:17:18,037 INFO L78 Accepts]: Start accepts. Automaton has 56490 states and 88086 transitions. Word has length 91 [2022-07-13 18:17:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:18,038 INFO L495 AbstractCegarLoop]: Abstraction has 56490 states and 88086 transitions. [2022-07-13 18:17:18,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 56490 states and 88086 transitions. [2022-07-13 18:17:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:17:18,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:18,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:18,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:17:18,058 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1688097610, now seen corresponding path program 1 times [2022-07-13 18:17:18,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:18,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320801942] [2022-07-13 18:17:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:17:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:17:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:17:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:17:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:18,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320801942] [2022-07-13 18:17:18,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320801942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:18,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:18,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:18,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214839553] [2022-07-13 18:17:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:18,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:18,125 INFO L87 Difference]: Start difference. First operand 56490 states and 88086 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:24,376 INFO L93 Difference]: Finished difference Result 134367 states and 210531 transitions. [2022-07-13 18:17:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:17:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-13 18:17:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:24,730 INFO L225 Difference]: With dead ends: 134367 [2022-07-13 18:17:24,730 INFO L226 Difference]: Without dead ends: 77890 [2022-07-13 18:17:24,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-13 18:17:24,892 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 408 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:24,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 827 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:17:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77890 states. [2022-07-13 18:17:28,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77890 to 57072. [2022-07-13 18:17:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57072 states, 50498 states have (on average 1.464830290308527) internal successors, (73971), 51013 states have internal predecessors, (73971), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-07-13 18:17:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57072 states to 57072 states and 88474 transitions. [2022-07-13 18:17:28,865 INFO L78 Accepts]: Start accepts. Automaton has 57072 states and 88474 transitions. Word has length 91 [2022-07-13 18:17:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:28,865 INFO L495 AbstractCegarLoop]: Abstraction has 57072 states and 88474 transitions. [2022-07-13 18:17:28,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-13 18:17:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 57072 states and 88474 transitions. [2022-07-13 18:17:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 18:17:28,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:28,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:28,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:17:28,886 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:28,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash -667707640, now seen corresponding path program 1 times [2022-07-13 18:17:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:28,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473891017] [2022-07-13 18:17:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:28,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 18:17:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:28,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 18:17:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 18:17:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:17:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:28,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473891017] [2022-07-13 18:17:28,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473891017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:28,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:28,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:17:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150863856] [2022-07-13 18:17:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:17:28,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:17:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:17:28,948 INFO L87 Difference]: Start difference. First operand 57072 states and 88474 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-13 18:17:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:38,915 INFO L93 Difference]: Finished difference Result 192369 states and 297483 transitions. [2022-07-13 18:17:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:17:38,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2022-07-13 18:17:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:39,522 INFO L225 Difference]: With dead ends: 192369 [2022-07-13 18:17:39,522 INFO L226 Difference]: Without dead ends: 135310 [2022-07-13 18:17:39,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:17:39,849 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 917 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:39,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 984 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:17:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135310 states.