./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.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/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.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 760447de6aa5739f187553f004f72c898b25c540c6dba08996c9520ae7051de1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:27:05,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:27:05,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:27:06,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:27:06,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:27:06,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:27:06,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:27:06,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:27:06,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:27:06,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:27:06,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:27:06,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:27:06,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:27:06,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:27:06,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:27:06,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:27:06,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:27:06,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:27:06,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:27:06,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:27:06,051 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:27:06,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:27:06,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:27:06,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:27:06,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:27:06,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:27:06,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:27:06,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:27:06,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:27:06,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:27:06,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:27:06,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:27:06,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:27:06,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:27:06,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:27:06,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:27:06,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:27:06,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:27:06,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:27:06,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:27:06,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:27:06,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:27:06,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:27:06,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:27:06,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:27:06,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:27:06,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:27:06,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:27:06,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:27:06,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:27:06,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:27:06,106 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:27:06,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:27:06,107 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:27:06,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:27:06,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:27:06,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:27:06,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:27:06,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:27:06,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:27:06,108 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:27:06,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:27:06,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:27:06,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:27:06,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:27:06,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:27:06,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:27:06,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:27:06,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:27:06,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:27:06,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:27:06,110 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:27:06,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:27:06,111 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:27:06,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:27:06,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:27:06,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760447de6aa5739f187553f004f72c898b25c540c6dba08996c9520ae7051de1 [2022-07-13 18:27:06,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:27:06,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:27:06,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:27:06,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:27:06,368 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:27:06,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-07-13 18:27:06,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e44d070a/afe78fa901a0401fa9f75e502893b460/FLAGced400216 [2022-07-13 18:27:06,859 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:27:06,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-07-13 18:27:06,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e44d070a/afe78fa901a0401fa9f75e502893b460/FLAGced400216 [2022-07-13 18:27:06,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e44d070a/afe78fa901a0401fa9f75e502893b460 [2022-07-13 18:27:06,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:27:06,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:27:06,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:27:06,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:27:06,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:27:06,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:27:06" (1/1) ... [2022-07-13 18:27:06,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7396a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:06, skipping insertion in model container [2022-07-13 18:27:06,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:27:06" (1/1) ... [2022-07-13 18:27:06,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:27:06,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:27:07,191 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/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2022-07-13 18:27:07,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:27:07,205 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:27:07,261 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/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2022-07-13 18:27:07,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:27:07,280 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:27:07,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07 WrapperNode [2022-07-13 18:27:07,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:27:07,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:27:07,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:27:07,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:27:07,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,330 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 451 [2022-07-13 18:27:07,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:27:07,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:27:07,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:27:07,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:27:07,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:27:07,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:27:07,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:27:07,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:27:07,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (1/1) ... [2022-07-13 18:27:07,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:27:07,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:27:07,405 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 18:27:07,422 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 18:27:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:27:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:27:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:27:07,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:27:07,546 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:27:07,548 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:27:08,033 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:27:08,041 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:27:08,041 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 18:27:08,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:27:08 BoogieIcfgContainer [2022-07-13 18:27:08,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:27:08,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:27:08,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:27:08,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:27:08,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:27:06" (1/3) ... [2022-07-13 18:27:08,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e822ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:27:08, skipping insertion in model container [2022-07-13 18:27:08,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:27:07" (2/3) ... [2022-07-13 18:27:08,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e822ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:27:08, skipping insertion in model container [2022-07-13 18:27:08,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:27:08" (3/3) ... [2022-07-13 18:27:08,051 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-07-13 18:27:08,068 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:27:08,068 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:27:08,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:27:08,121 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@446c393d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@64bd1924 [2022-07-13 18:27:08,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:27:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 18:27:08,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:08,140 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] [2022-07-13 18:27:08,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:08,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1880075128, now seen corresponding path program 1 times [2022-07-13 18:27:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:08,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483252609] [2022-07-13 18:27:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:08,386 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 18:27:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:08,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483252609] [2022-07-13 18:27:08,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483252609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:08,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:08,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:27:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103581562] [2022-07-13 18:27:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:08,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:27:08,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:27:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:27:08,433 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:08,471 INFO L93 Difference]: Finished difference Result 201 states and 339 transitions. [2022-07-13 18:27:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:27:08,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-13 18:27:08,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:08,484 INFO L225 Difference]: With dead ends: 201 [2022-07-13 18:27:08,484 INFO L226 Difference]: Without dead ends: 126 [2022-07-13 18:27:08,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:27:08,506 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:08,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-13 18:27:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-13 18:27:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.736) internal successors, (217), 125 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 217 transitions. [2022-07-13 18:27:08,559 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 217 transitions. Word has length 41 [2022-07-13 18:27:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:08,560 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 217 transitions. [2022-07-13 18:27:08,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 217 transitions. [2022-07-13 18:27:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 18:27:08,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:08,564 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] [2022-07-13 18:27:08,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:27:08,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:08,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2020525382, now seen corresponding path program 1 times [2022-07-13 18:27:08,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:08,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913544495] [2022-07-13 18:27:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:08,674 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 18:27:08,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:08,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913544495] [2022-07-13 18:27:08,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913544495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:08,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:08,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:27:08,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569984282] [2022-07-13 18:27:08,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:08,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:27:08,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:08,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:27:08,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:27:08,677 INFO L87 Difference]: Start difference. First operand 126 states and 217 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:08,764 INFO L93 Difference]: Finished difference Result 200 states and 332 transitions. [2022-07-13 18:27:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:27:08,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-13 18:27:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:08,767 INFO L225 Difference]: With dead ends: 200 [2022-07-13 18:27:08,769 INFO L226 Difference]: Without dead ends: 126 [2022-07-13 18:27:08,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:27:08,771 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:08,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 807 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-13 18:27:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-13 18:27:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.336) internal successors, (167), 125 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2022-07-13 18:27:08,784 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 41 [2022-07-13 18:27:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:08,786 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2022-07-13 18:27:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2022-07-13 18:27:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 18:27:08,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:08,791 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] [2022-07-13 18:27:08,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:27:08,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:08,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1655570070, now seen corresponding path program 1 times [2022-07-13 18:27:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:08,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613980528] [2022-07-13 18:27:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:08,965 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 18:27:08,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613980528] [2022-07-13 18:27:08,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613980528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:08,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:08,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:08,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551400757] [2022-07-13 18:27:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:08,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:08,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:08,968 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:08,990 INFO L93 Difference]: Finished difference Result 260 states and 379 transitions. [2022-07-13 18:27:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:08,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-13 18:27:08,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:08,993 INFO L225 Difference]: With dead ends: 260 [2022-07-13 18:27:08,993 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 18:27:08,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:08,995 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:08,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 325 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 18:27:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-13 18:27:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 187 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 266 transitions. [2022-07-13 18:27:09,012 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 266 transitions. Word has length 90 [2022-07-13 18:27:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:09,013 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 266 transitions. [2022-07-13 18:27:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 266 transitions. [2022-07-13 18:27:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 18:27:09,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:09,015 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] [2022-07-13 18:27:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:27:09,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1317776928, now seen corresponding path program 1 times [2022-07-13 18:27:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:09,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615251882] [2022-07-13 18:27:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:09,142 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 18:27:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:09,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615251882] [2022-07-13 18:27:09,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615251882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:09,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:09,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163170351] [2022-07-13 18:27:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:09,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:09,147 INFO L87 Difference]: Start difference. First operand 188 states and 266 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:09,177 INFO L93 Difference]: Finished difference Result 440 states and 666 transitions. [2022-07-13 18:27:09,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:09,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-13 18:27:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:09,183 INFO L225 Difference]: With dead ends: 440 [2022-07-13 18:27:09,183 INFO L226 Difference]: Without dead ends: 308 [2022-07-13 18:27:09,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:09,196 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 77 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:09,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 324 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-13 18:27:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-07-13 18:27:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.4852459016393442) internal successors, (453), 305 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 453 transitions. [2022-07-13 18:27:09,214 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 453 transitions. Word has length 90 [2022-07-13 18:27:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:09,215 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 453 transitions. [2022-07-13 18:27:09,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 453 transitions. [2022-07-13 18:27:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 18:27:09,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:09,216 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] [2022-07-13 18:27:09,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:27:09,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:09,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash -99791530, now seen corresponding path program 1 times [2022-07-13 18:27:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:09,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624192959] [2022-07-13 18:27:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:09,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:09,351 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 18:27:09,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:09,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624192959] [2022-07-13 18:27:09,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624192959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:09,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:09,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:27:09,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051027891] [2022-07-13 18:27:09,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:27:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:27:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:27:09,356 INFO L87 Difference]: Start difference. First operand 306 states and 453 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:09,844 INFO L93 Difference]: Finished difference Result 3806 states and 6011 transitions. [2022-07-13 18:27:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:27:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-07-13 18:27:09,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:09,863 INFO L225 Difference]: With dead ends: 3806 [2022-07-13 18:27:09,864 INFO L226 Difference]: Without dead ends: 3556 [2022-07-13 18:27:09,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:27:09,873 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2558 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:09,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 2078 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:09,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2022-07-13 18:27:09,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 554. [2022-07-13 18:27:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.5207956600361663) internal successors, (841), 553 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 841 transitions. [2022-07-13 18:27:09,968 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 841 transitions. Word has length 90 [2022-07-13 18:27:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:09,970 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 841 transitions. [2022-07-13 18:27:09,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 841 transitions. [2022-07-13 18:27:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:27:09,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:09,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:09,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:27:09,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1468897702, now seen corresponding path program 1 times [2022-07-13 18:27:09,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152968962] [2022-07-13 18:27:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:10,080 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 18:27:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:10,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152968962] [2022-07-13 18:27:10,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152968962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:10,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:10,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405590614] [2022-07-13 18:27:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:10,085 INFO L87 Difference]: Start difference. First operand 554 states and 841 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:10,175 INFO L93 Difference]: Finished difference Result 1506 states and 2335 transitions. [2022-07-13 18:27:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-13 18:27:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:10,179 INFO L225 Difference]: With dead ends: 1506 [2022-07-13 18:27:10,180 INFO L226 Difference]: Without dead ends: 1008 [2022-07-13 18:27:10,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:10,186 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:10,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 267 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-13 18:27:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 998. [2022-07-13 18:27:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.5255767301905716) internal successors, (1521), 997 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1521 transitions. [2022-07-13 18:27:10,263 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1521 transitions. Word has length 92 [2022-07-13 18:27:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:10,264 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1521 transitions. [2022-07-13 18:27:10,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1521 transitions. [2022-07-13 18:27:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:27:10,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:10,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:10,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:27:10,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1535391214, now seen corresponding path program 1 times [2022-07-13 18:27:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:10,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815662621] [2022-07-13 18:27:10,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:10,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:10,546 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 18:27:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:10,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815662621] [2022-07-13 18:27:10,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815662621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:10,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:10,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:27:10,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453860290] [2022-07-13 18:27:10,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:10,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:27:10,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:10,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:27:10,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:27:10,548 INFO L87 Difference]: Start difference. First operand 998 states and 1521 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:10,920 INFO L93 Difference]: Finished difference Result 1942 states and 2987 transitions. [2022-07-13 18:27:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:27:10,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-13 18:27:10,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:10,924 INFO L225 Difference]: With dead ends: 1942 [2022-07-13 18:27:10,925 INFO L226 Difference]: Without dead ends: 1000 [2022-07-13 18:27:10,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:27:10,929 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 624 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:10,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 831 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-07-13 18:27:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 998. [2022-07-13 18:27:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.5175526579739218) internal successors, (1513), 997 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1513 transitions. [2022-07-13 18:27:10,999 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1513 transitions. Word has length 92 [2022-07-13 18:27:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:11,000 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1513 transitions. [2022-07-13 18:27:11,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1513 transitions. [2022-07-13 18:27:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:27:11,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:11,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:11,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:27:11,002 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 550533322, now seen corresponding path program 1 times [2022-07-13 18:27:11,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740184767] [2022-07-13 18:27:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:11,057 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 18:27:11,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:11,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740184767] [2022-07-13 18:27:11,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740184767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:11,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:11,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328984269] [2022-07-13 18:27:11,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:11,060 INFO L87 Difference]: Start difference. First operand 998 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:11,178 INFO L93 Difference]: Finished difference Result 2786 states and 4267 transitions. [2022-07-13 18:27:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:11,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-13 18:27:11,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:11,186 INFO L225 Difference]: With dead ends: 2786 [2022-07-13 18:27:11,186 INFO L226 Difference]: Without dead ends: 1844 [2022-07-13 18:27:11,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:11,189 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 85 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:11,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 335 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-13 18:27:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-13 18:27:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.5171102661596958) internal successors, (2793), 1841 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2793 transitions. [2022-07-13 18:27:11,327 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2793 transitions. Word has length 92 [2022-07-13 18:27:11,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:11,327 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2793 transitions. [2022-07-13 18:27:11,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2793 transitions. [2022-07-13 18:27:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:27:11,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:11,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:11,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:27:11,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:11,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1925362326, now seen corresponding path program 1 times [2022-07-13 18:27:11,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:11,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722638890] [2022-07-13 18:27:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:11,385 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 18:27:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:11,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722638890] [2022-07-13 18:27:11,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722638890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:11,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:11,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890238832] [2022-07-13 18:27:11,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:11,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:11,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:11,388 INFO L87 Difference]: Start difference. First operand 1842 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:11,612 INFO L93 Difference]: Finished difference Result 5222 states and 7947 transitions. [2022-07-13 18:27:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-13 18:27:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:11,625 INFO L225 Difference]: With dead ends: 5222 [2022-07-13 18:27:11,625 INFO L226 Difference]: Without dead ends: 3436 [2022-07-13 18:27:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:11,629 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:11,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:11,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2022-07-13 18:27:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3434. [2022-07-13 18:27:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 1.5080104864549957) internal successors, (5177), 3433 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 5177 transitions. [2022-07-13 18:27:11,870 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 5177 transitions. Word has length 92 [2022-07-13 18:27:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:11,870 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 5177 transitions. [2022-07-13 18:27:11,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 5177 transitions. [2022-07-13 18:27:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:27:11,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:11,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:11,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:27:11,872 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1745956342, now seen corresponding path program 1 times [2022-07-13 18:27:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:11,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095175895] [2022-07-13 18:27:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:11,920 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 18:27:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:11,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095175895] [2022-07-13 18:27:11,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095175895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:11,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:11,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771694554] [2022-07-13 18:27:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:11,923 INFO L87 Difference]: Start difference. First operand 3434 states and 5177 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:12,345 INFO L93 Difference]: Finished difference Result 9806 states and 14779 transitions. [2022-07-13 18:27:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:12,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-13 18:27:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:12,369 INFO L225 Difference]: With dead ends: 9806 [2022-07-13 18:27:12,370 INFO L226 Difference]: Without dead ends: 6428 [2022-07-13 18:27:12,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:12,377 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 93 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:12,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2022-07-13 18:27:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 6426. [2022-07-13 18:27:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 6425 states have (on average 1.4930739299610896) internal successors, (9593), 6425 states have internal predecessors, (9593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9593 transitions. [2022-07-13 18:27:12,852 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9593 transitions. Word has length 92 [2022-07-13 18:27:12,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:12,852 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9593 transitions. [2022-07-13 18:27:12,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9593 transitions. [2022-07-13 18:27:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 18:27:12,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:12,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:12,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:27:12,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:12,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash 789382826, now seen corresponding path program 1 times [2022-07-13 18:27:12,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:12,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193971857] [2022-07-13 18:27:12,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:12,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:12,889 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 18:27:12,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:12,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193971857] [2022-07-13 18:27:12,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193971857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:12,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:12,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595392045] [2022-07-13 18:27:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:12,892 INFO L87 Difference]: Start difference. First operand 6426 states and 9593 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:13,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:13,730 INFO L93 Difference]: Finished difference Result 18398 states and 27387 transitions. [2022-07-13 18:27:13,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:13,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-13 18:27:13,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:13,780 INFO L225 Difference]: With dead ends: 18398 [2022-07-13 18:27:13,780 INFO L226 Difference]: Without dead ends: 12028 [2022-07-13 18:27:13,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:13,790 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 97 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:13,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:13,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12028 states. [2022-07-13 18:27:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12028 to 12026. [2022-07-13 18:27:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12026 states, 12025 states have (on average 1.4736798336798336) internal successors, (17721), 12025 states have internal predecessors, (17721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12026 states to 12026 states and 17721 transitions. [2022-07-13 18:27:14,702 INFO L78 Accepts]: Start accepts. Automaton has 12026 states and 17721 transitions. Word has length 92 [2022-07-13 18:27:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:14,702 INFO L495 AbstractCegarLoop]: Abstraction has 12026 states and 17721 transitions. [2022-07-13 18:27:14,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 12026 states and 17721 transitions. [2022-07-13 18:27:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 18:27:14,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:14,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:27:14,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash -62235482, now seen corresponding path program 1 times [2022-07-13 18:27:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:14,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284731862] [2022-07-13 18:27:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:14,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:14,780 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 18:27:14,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284731862] [2022-07-13 18:27:14,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284731862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:14,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:14,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:27:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032006210] [2022-07-13 18:27:14,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:27:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:27:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:27:14,783 INFO L87 Difference]: Start difference. First operand 12026 states and 17721 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:16,265 INFO L93 Difference]: Finished difference Result 20896 states and 30633 transitions. [2022-07-13 18:27:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:27:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-13 18:27:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:16,316 INFO L225 Difference]: With dead ends: 20896 [2022-07-13 18:27:16,316 INFO L226 Difference]: Without dead ends: 20894 [2022-07-13 18:27:16,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:27:16,326 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 303 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:16,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 725 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20894 states. [2022-07-13 18:27:17,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20894 to 12410. [2022-07-13 18:27:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12410 states, 12409 states have (on average 1.4538641308727536) internal successors, (18041), 12409 states have internal predecessors, (18041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12410 states to 12410 states and 18041 transitions. [2022-07-13 18:27:17,387 INFO L78 Accepts]: Start accepts. Automaton has 12410 states and 18041 transitions. Word has length 93 [2022-07-13 18:27:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:17,387 INFO L495 AbstractCegarLoop]: Abstraction has 12410 states and 18041 transitions. [2022-07-13 18:27:17,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 12410 states and 18041 transitions. [2022-07-13 18:27:17,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 18:27:17,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:17,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:27:17,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:27:17,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1252770917, now seen corresponding path program 1 times [2022-07-13 18:27:17,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:17,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743468394] [2022-07-13 18:27:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:17,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:17,429 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 18:27:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:17,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743468394] [2022-07-13 18:27:17,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743468394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:17,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:17,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:27:17,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771082179] [2022-07-13 18:27:17,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:17,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:27:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:17,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:27:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:17,432 INFO L87 Difference]: Start difference. First operand 12410 states and 18041 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:18,573 INFO L93 Difference]: Finished difference Result 24961 states and 36479 transitions. [2022-07-13 18:27:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:27:18,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-07-13 18:27:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:18,613 INFO L225 Difference]: With dead ends: 24961 [2022-07-13 18:27:18,613 INFO L226 Difference]: Without dead ends: 18174 [2022-07-13 18:27:18,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:27:18,627 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 98 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:18,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:27:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18174 states. [2022-07-13 18:27:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18174 to 18172. [2022-07-13 18:27:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18172 states, 18171 states have (on average 1.4473061471575588) internal successors, (26299), 18171 states have internal predecessors, (26299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18172 states to 18172 states and 26299 transitions. [2022-07-13 18:27:20,084 INFO L78 Accepts]: Start accepts. Automaton has 18172 states and 26299 transitions. Word has length 94 [2022-07-13 18:27:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:20,085 INFO L495 AbstractCegarLoop]: Abstraction has 18172 states and 26299 transitions. [2022-07-13 18:27:20,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18172 states and 26299 transitions. [2022-07-13 18:27:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 18:27:20,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:20,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:20,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:27:20,095 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:20,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1608497720, now seen corresponding path program 1 times [2022-07-13 18:27:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:20,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450812722] [2022-07-13 18:27:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 18:27:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:20,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450812722] [2022-07-13 18:27:20,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450812722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:20,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:20,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:27:20,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713248328] [2022-07-13 18:27:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:20,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:27:20,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:27:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:27:20,198 INFO L87 Difference]: Start difference. First operand 18172 states and 26299 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:27,168 INFO L93 Difference]: Finished difference Result 148492 states and 214915 transitions. [2022-07-13 18:27:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:27:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-07-13 18:27:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:27,492 INFO L225 Difference]: With dead ends: 148492 [2022-07-13 18:27:27,492 INFO L226 Difference]: Without dead ends: 130378 [2022-07-13 18:27:27,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:27:27,562 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 2254 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:27,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 1241 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:27,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130378 states. [2022-07-13 18:27:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130378 to 36284. [2022-07-13 18:27:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36284 states, 36283 states have (on average 1.4427417798969213) internal successors, (52347), 36283 states have internal predecessors, (52347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36284 states to 36284 states and 52347 transitions. [2022-07-13 18:27:31,545 INFO L78 Accepts]: Start accepts. Automaton has 36284 states and 52347 transitions. Word has length 129 [2022-07-13 18:27:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:31,546 INFO L495 AbstractCegarLoop]: Abstraction has 36284 states and 52347 transitions. [2022-07-13 18:27:31,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 36284 states and 52347 transitions. [2022-07-13 18:27:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 18:27:31,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:31,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:31,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:27:31,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:31,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash 917686760, now seen corresponding path program 1 times [2022-07-13 18:27:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:31,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507671440] [2022-07-13 18:27:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:31,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 18:27:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:31,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507671440] [2022-07-13 18:27:31,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507671440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:31,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:31,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:27:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873597652] [2022-07-13 18:27:31,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:31,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:27:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:31,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:27:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:27:31,664 INFO L87 Difference]: Start difference. First operand 36284 states and 52347 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:27:40,464 INFO L93 Difference]: Finished difference Result 166604 states and 240963 transitions. [2022-07-13 18:27:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:27:40,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-07-13 18:27:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:27:40,853 INFO L225 Difference]: With dead ends: 166604 [2022-07-13 18:27:40,854 INFO L226 Difference]: Without dead ends: 148490 [2022-07-13 18:27:40,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:27:40,896 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1983 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:27:40,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1344 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:27:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148490 states. [2022-07-13 18:27:45,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148490 to 63484. [2022-07-13 18:27:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63484 states, 63483 states have (on average 1.4375344580438858) internal successors, (91259), 63483 states have internal predecessors, (91259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63484 states to 63484 states and 91259 transitions. [2022-07-13 18:27:46,052 INFO L78 Accepts]: Start accepts. Automaton has 63484 states and 91259 transitions. Word has length 129 [2022-07-13 18:27:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:27:46,053 INFO L495 AbstractCegarLoop]: Abstraction has 63484 states and 91259 transitions. [2022-07-13 18:27:46,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:27:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 63484 states and 91259 transitions. [2022-07-13 18:27:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 18:27:46,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:27:46,071 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:27:46,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:27:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:27:46,072 INFO L85 PathProgramCache]: Analyzing trace with hash 853581330, now seen corresponding path program 1 times [2022-07-13 18:27:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:27:46,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700250934] [2022-07-13 18:27:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:27:46,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:27:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:27:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 18:27:46,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:27:46,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700250934] [2022-07-13 18:27:46,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700250934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:27:46,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:27:46,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 18:27:46,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727950621] [2022-07-13 18:27:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:27:46,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:27:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:27:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:27:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:27:46,176 INFO L87 Difference]: Start difference. First operand 63484 states and 91259 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)