./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.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 0df39af5bb0da8e3087f1622629197ff07999529140b31d9eb8577cc8820a051 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:27:16,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:27:16,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:27:17,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:27:17,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:27:17,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:27:17,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:27:17,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:27:17,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:27:17,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:27:17,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:27:17,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:27:17,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:27:17,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:27:17,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:27:17,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:27:17,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:27:17,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:27:17,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:27:17,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:27:17,037 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:27:17,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:27:17,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:27:17,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:27:17,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:27:17,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:27:17,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:27:17,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:27:17,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:27:17,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:27:17,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:27:17,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:27:17,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:27:17,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:27:17,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:27:17,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:27:17,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:27:17,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:27:17,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:27:17,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:27:17,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:27:17,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:27:17,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:27:17,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:27:17,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:27:17,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:27:17,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:27:17,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:27:17,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:27:17,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:27:17,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:27:17,087 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:27:17,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:27:17,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:27:17,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:27:17,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:27:17,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:27:17,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:27:17,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:27:17,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:27:17,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:27:17,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:27:17,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:27:17,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:27:17,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:27:17,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:27:17,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:27:17,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:27:17,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:27:17,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:27:17,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:27:17,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:27:17,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:27:17,093 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:27:17,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:27:17,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:27:17,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0df39af5bb0da8e3087f1622629197ff07999529140b31d9eb8577cc8820a051 [2022-07-22 18:27:17,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:27:17,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:27:17,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:27:17,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:27:17,349 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:27:17,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:27:17,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1a2871/ec4c9e035a364b339ea411f1106c3dc3/FLAG1b110451b [2022-07-22 18:27:17,814 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:27:17,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:27:17,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1a2871/ec4c9e035a364b339ea411f1106c3dc3/FLAG1b110451b [2022-07-22 18:27:17,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ce1a2871/ec4c9e035a364b339ea411f1106c3dc3 [2022-07-22 18:27:17,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:27:17,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:27:17,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:27:17,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:27:17,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:27:17,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:27:17" (1/1) ... [2022-07-22 18:27:17,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e26da2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:17, skipping insertion in model container [2022-07-22 18:27:17,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:27:17" (1/1) ... [2022-07-22 18:27:17,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:27:17,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:27:18,112 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-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2022-07-22 18:27:18,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:27:18,163 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:27:18,204 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-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7105,7118] [2022-07-22 18:27:18,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:27:18,246 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:27:18,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18 WrapperNode [2022-07-22 18:27:18,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:27:18,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:27:18,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:27:18,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:27:18,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,302 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 660 [2022-07-22 18:27:18,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:27:18,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:27:18,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:27:18,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:27:18,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:27:18,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:27:18,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:27:18,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:27:18,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (1/1) ... [2022-07-22 18:27:18,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:27:18,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:27:18,397 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) [2022-07-22 18:27:18,405 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 [2022-07-22 18:27:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:27:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:27:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:27:18,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:27:18,534 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:27:18,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:27:19,030 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:27:19,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:27:19,038 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:27:19,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:27:19 BoogieIcfgContainer [2022-07-22 18:27:19,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:27:19,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:27:19,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:27:19,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:27:19,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:27:17" (1/3) ... [2022-07-22 18:27:19,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc90844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:27:19, skipping insertion in model container [2022-07-22 18:27:19,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:27:18" (2/3) ... [2022-07-22 18:27:19,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc90844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:27:19, skipping insertion in model container [2022-07-22 18:27:19,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:27:19" (3/3) ... [2022-07-22 18:27:19,048 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-22 18:27:19,061 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:27:19,062 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:27:19,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:27:19,112 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@2cb30166, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ed94ba9 [2022-07-22 18:27:19,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:27:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 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) [2022-07-22 18:27:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 18:27:19,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:19,127 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] [2022-07-22 18:27:19,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash -113151096, now seen corresponding path program 1 times [2022-07-22 18:27:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:19,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866927654] [2022-07-22 18:27:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:19,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:19,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866927654] [2022-07-22 18:27:19,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866927654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:19,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:19,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:27:19,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780256556] [2022-07-22 18:27:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:27:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:27:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:27:19,597 INFO L87 Difference]: Start difference. First operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 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 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2022-07-22 18:27:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:19,868 INFO L93 Difference]: Finished difference Result 639 states and 1034 transitions. [2022-07-22 18:27:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:27:19,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 64 [2022-07-22 18:27:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:19,895 INFO L225 Difference]: With dead ends: 639 [2022-07-22 18:27:19,895 INFO L226 Difference]: Without dead ends: 540 [2022-07-22 18:27:19,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:27:19,904 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1598 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:19,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1127 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:27:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-22 18:27:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 274. [2022-07-22 18:27:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 273 states have internal predecessors, (413), 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) [2022-07-22 18:27:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 413 transitions. [2022-07-22 18:27:20,014 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 413 transitions. Word has length 64 [2022-07-22 18:27:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:20,015 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 413 transitions. [2022-07-22 18:27:20,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2022-07-22 18:27:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 413 transitions. [2022-07-22 18:27:20,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 18:27:20,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:20,018 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] [2022-07-22 18:27:20,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:27:20,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:20,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash 507394196, now seen corresponding path program 1 times [2022-07-22 18:27:20,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:20,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45625987] [2022-07-22 18:27:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:20,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:20,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:20,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45625987] [2022-07-22 18:27:20,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45625987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:20,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:20,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:27:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759314175] [2022-07-22 18:27:20,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:20,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:27:20,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:20,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:27:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:27:20,232 INFO L87 Difference]: Start difference. First operand 274 states and 413 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-07-22 18:27:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:20,471 INFO L93 Difference]: Finished difference Result 1012 states and 1565 transitions. [2022-07-22 18:27:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:27:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-07-22 18:27:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:20,476 INFO L225 Difference]: With dead ends: 1012 [2022-07-22 18:27:20,476 INFO L226 Difference]: Without dead ends: 800 [2022-07-22 18:27:20,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:27:20,484 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 783 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:20,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 897 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:27:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-22 18:27:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 794. [2022-07-22 18:27:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5359394703656999) internal successors, (1218), 793 states have internal predecessors, (1218), 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) [2022-07-22 18:27:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1218 transitions. [2022-07-22 18:27:20,583 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1218 transitions. Word has length 65 [2022-07-22 18:27:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:20,585 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1218 transitions. [2022-07-22 18:27:20,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-07-22 18:27:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1218 transitions. [2022-07-22 18:27:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:27:20,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:20,592 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] [2022-07-22 18:27:20,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:27:20,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1175932082, now seen corresponding path program 1 times [2022-07-22 18:27:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:20,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759814994] [2022-07-22 18:27:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:20,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:20,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759814994] [2022-07-22 18:27:20,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759814994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:20,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:20,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:27:20,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121698200] [2022-07-22 18:27:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:20,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:27:20,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:27:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:27:20,726 INFO L87 Difference]: Start difference. First operand 794 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:21,051 INFO L93 Difference]: Finished difference Result 2126 states and 3304 transitions. [2022-07-22 18:27:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:27:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:27:21,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:21,060 INFO L225 Difference]: With dead ends: 2126 [2022-07-22 18:27:21,060 INFO L226 Difference]: Without dead ends: 1382 [2022-07-22 18:27:21,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:27:21,068 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 997 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:21,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 246 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:27:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-07-22 18:27:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1380. [2022-07-22 18:27:21,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 1.5453226976069616) internal successors, (2131), 1379 states have internal predecessors, (2131), 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) [2022-07-22 18:27:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2131 transitions. [2022-07-22 18:27:21,203 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2131 transitions. Word has length 66 [2022-07-22 18:27:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:21,204 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 2131 transitions. [2022-07-22 18:27:21,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:21,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2131 transitions. [2022-07-22 18:27:21,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:27:21,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:21,207 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] [2022-07-22 18:27:21,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:27:21,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash 195420080, now seen corresponding path program 1 times [2022-07-22 18:27:21,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:21,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471877049] [2022-07-22 18:27:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:21,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:21,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:21,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471877049] [2022-07-22 18:27:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471877049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:21,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:27:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830561219] [2022-07-22 18:27:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:21,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:27:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:27:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:27:21,327 INFO L87 Difference]: Start difference. First operand 1380 states and 2131 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:21,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:21,747 INFO L93 Difference]: Finished difference Result 3712 states and 5789 transitions. [2022-07-22 18:27:21,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:27:21,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:27:21,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:21,759 INFO L225 Difference]: With dead ends: 3712 [2022-07-22 18:27:21,759 INFO L226 Difference]: Without dead ends: 2432 [2022-07-22 18:27:21,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:27:21,768 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 923 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:21,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 252 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:27:21,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-07-22 18:27:22,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2430. [2022-07-22 18:27:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2429 states have (on average 1.550020584602717) internal successors, (3765), 2429 states have internal predecessors, (3765), 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) [2022-07-22 18:27:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3765 transitions. [2022-07-22 18:27:22,016 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3765 transitions. Word has length 66 [2022-07-22 18:27:22,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:22,017 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 3765 transitions. [2022-07-22 18:27:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:22,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3765 transitions. [2022-07-22 18:27:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:27:22,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:22,019 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] [2022-07-22 18:27:22,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:27:22,019 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:22,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2140991135, now seen corresponding path program 1 times [2022-07-22 18:27:22,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:22,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157661084] [2022-07-22 18:27:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:22,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157661084] [2022-07-22 18:27:22,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157661084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:22,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:22,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:27:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162302927] [2022-07-22 18:27:22,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:22,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:27:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:27:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:27:22,075 INFO L87 Difference]: Start difference. First operand 2430 states and 3765 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:22,629 INFO L93 Difference]: Finished difference Result 6933 states and 10800 transitions. [2022-07-22 18:27:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:27:22,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:27:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:22,647 INFO L225 Difference]: With dead ends: 6933 [2022-07-22 18:27:22,647 INFO L226 Difference]: Without dead ends: 4576 [2022-07-22 18:27:22,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:27:22,652 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 949 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:22,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 250 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:27:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-07-22 18:27:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4574. [2022-07-22 18:27:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 1.5484364749617319) internal successors, (7081), 4573 states have internal predecessors, (7081), 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) [2022-07-22 18:27:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 7081 transitions. [2022-07-22 18:27:23,033 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 7081 transitions. Word has length 66 [2022-07-22 18:27:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:23,034 INFO L495 AbstractCegarLoop]: Abstraction has 4574 states and 7081 transitions. [2022-07-22 18:27:23,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:23,038 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 7081 transitions. [2022-07-22 18:27:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:27:23,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:23,040 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] [2022-07-22 18:27:23,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:27:23,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:23,041 INFO L85 PathProgramCache]: Analyzing trace with hash -472666691, now seen corresponding path program 1 times [2022-07-22 18:27:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:23,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353614028] [2022-07-22 18:27:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:23,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:23,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:23,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353614028] [2022-07-22 18:27:23,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353614028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:23,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:23,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:27:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658010129] [2022-07-22 18:27:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:23,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:27:23,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:27:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:27:23,107 INFO L87 Difference]: Start difference. First operand 4574 states and 7081 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:23,957 INFO L93 Difference]: Finished difference Result 12540 states and 19466 transitions. [2022-07-22 18:27:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:27:23,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2022-07-22 18:27:23,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:23,989 INFO L225 Difference]: With dead ends: 12540 [2022-07-22 18:27:23,990 INFO L226 Difference]: Without dead ends: 8000 [2022-07-22 18:27:23,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:27:23,999 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1011 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:23,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 244 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:27:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2022-07-22 18:27:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 7998. [2022-07-22 18:27:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7998 states, 7997 states have (on average 1.5390771539327248) internal successors, (12308), 7997 states have internal predecessors, (12308), 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) [2022-07-22 18:27:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7998 states to 7998 states and 12308 transitions. [2022-07-22 18:27:24,687 INFO L78 Accepts]: Start accepts. Automaton has 7998 states and 12308 transitions. Word has length 66 [2022-07-22 18:27:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:24,687 INFO L495 AbstractCegarLoop]: Abstraction has 7998 states and 12308 transitions. [2022-07-22 18:27:24,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2022-07-22 18:27:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 7998 states and 12308 transitions. [2022-07-22 18:27:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 18:27:24,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:24,690 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] [2022-07-22 18:27:24,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:27:24,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:24,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:24,691 INFO L85 PathProgramCache]: Analyzing trace with hash 545251456, now seen corresponding path program 1 times [2022-07-22 18:27:24,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:24,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887243954] [2022-07-22 18:27:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:24,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:24,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887243954] [2022-07-22 18:27:24,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887243954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:24,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:24,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:27:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508065259] [2022-07-22 18:27:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:24,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:27:24,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:24,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:27:24,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:27:24,776 INFO L87 Difference]: Start difference. First operand 7998 states and 12308 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-22 18:27:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:26,278 INFO L93 Difference]: Finished difference Result 15648 states and 24029 transitions. [2022-07-22 18:27:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:27:26,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2022-07-22 18:27:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:26,337 INFO L225 Difference]: With dead ends: 15648 [2022-07-22 18:27:26,338 INFO L226 Difference]: Without dead ends: 15646 [2022-07-22 18:27:26,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:27:26,348 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 246 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:26,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 987 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:27:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15646 states. [2022-07-22 18:27:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15646 to 8222. [2022-07-22 18:27:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8222 states, 8221 states have (on average 1.5243887604914244) internal successors, (12532), 8221 states have internal predecessors, (12532), 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) [2022-07-22 18:27:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8222 states to 8222 states and 12532 transitions. [2022-07-22 18:27:27,326 INFO L78 Accepts]: Start accepts. Automaton has 8222 states and 12532 transitions. Word has length 67 [2022-07-22 18:27:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 8222 states and 12532 transitions. [2022-07-22 18:27:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-22 18:27:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 8222 states and 12532 transitions. [2022-07-22 18:27:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:27:27,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:27,330 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] [2022-07-22 18:27:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:27:27,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2333062, now seen corresponding path program 1 times [2022-07-22 18:27:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:27,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287641910] [2022-07-22 18:27:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:27,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:27,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:27,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287641910] [2022-07-22 18:27:27,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287641910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:27,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:27,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:27:27,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137049186] [2022-07-22 18:27:27,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:27:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:27:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:27:27,541 INFO L87 Difference]: Start difference. First operand 8222 states and 12532 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:31,650 INFO L93 Difference]: Finished difference Result 39233 states and 59317 transitions. [2022-07-22 18:27:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:27:31,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:27:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:31,747 INFO L225 Difference]: With dead ends: 39233 [2022-07-22 18:27:31,748 INFO L226 Difference]: Without dead ends: 33419 [2022-07-22 18:27:31,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2022-07-22 18:27:31,773 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 2621 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:31,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2621 Valid, 1151 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 18:27:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33419 states. [2022-07-22 18:27:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33419 to 8355. [2022-07-22 18:27:33,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8354 states have (on average 1.5210677519751017) internal successors, (12707), 8354 states have internal predecessors, (12707), 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) [2022-07-22 18:27:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 12707 transitions. [2022-07-22 18:27:33,021 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 12707 transitions. Word has length 68 [2022-07-22 18:27:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:33,021 INFO L495 AbstractCegarLoop]: Abstraction has 8355 states and 12707 transitions. [2022-07-22 18:27:33,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 12707 transitions. [2022-07-22 18:27:33,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:27:33,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:33,025 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] [2022-07-22 18:27:33,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:27:33,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash -371480250, now seen corresponding path program 1 times [2022-07-22 18:27:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:33,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400856491] [2022-07-22 18:27:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:33,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:33,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:33,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400856491] [2022-07-22 18:27:33,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400856491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:33,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:33,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:27:33,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021222115] [2022-07-22 18:27:33,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:33,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:27:33,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:27:33,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:27:33,178 INFO L87 Difference]: Start difference. First operand 8355 states and 12707 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:36,827 INFO L93 Difference]: Finished difference Result 28170 states and 42631 transitions. [2022-07-22 18:27:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:27:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:27:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:36,883 INFO L225 Difference]: With dead ends: 28170 [2022-07-22 18:27:36,884 INFO L226 Difference]: Without dead ends: 26863 [2022-07-22 18:27:36,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-07-22 18:27:36,898 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1787 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:36,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1764 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 18:27:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26863 states. [2022-07-22 18:27:37,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26863 to 8355. [2022-07-22 18:27:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8354 states have (on average 1.5208283457026575) internal successors, (12705), 8354 states have internal predecessors, (12705), 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) [2022-07-22 18:27:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 12705 transitions. [2022-07-22 18:27:37,905 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 12705 transitions. Word has length 68 [2022-07-22 18:27:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:37,905 INFO L495 AbstractCegarLoop]: Abstraction has 8355 states and 12705 transitions. [2022-07-22 18:27:37,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 12705 transitions. [2022-07-22 18:27:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:27:37,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:37,909 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] [2022-07-22 18:27:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:27:37,910 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2100624742, now seen corresponding path program 1 times [2022-07-22 18:27:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664542346] [2022-07-22 18:27:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:38,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:38,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664542346] [2022-07-22 18:27:38,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664542346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:38,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:38,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:27:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296411953] [2022-07-22 18:27:38,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:38,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:27:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:27:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:27:38,035 INFO L87 Difference]: Start difference. First operand 8355 states and 12705 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:41,609 INFO L93 Difference]: Finished difference Result 31337 states and 47336 transitions. [2022-07-22 18:27:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:27:41,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:27:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:41,652 INFO L225 Difference]: With dead ends: 31337 [2022-07-22 18:27:41,652 INFO L226 Difference]: Without dead ends: 27760 [2022-07-22 18:27:41,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-22 18:27:41,666 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1425 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:41,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 1263 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 18:27:41,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27760 states. [2022-07-22 18:27:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27760 to 8578. [2022-07-22 18:27:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8578 states, 8577 states have (on average 1.516147837239128) internal successors, (13004), 8577 states have internal predecessors, (13004), 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) [2022-07-22 18:27:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8578 states to 8578 states and 13004 transitions. [2022-07-22 18:27:42,708 INFO L78 Accepts]: Start accepts. Automaton has 8578 states and 13004 transitions. Word has length 68 [2022-07-22 18:27:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:42,709 INFO L495 AbstractCegarLoop]: Abstraction has 8578 states and 13004 transitions. [2022-07-22 18:27:42,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8578 states and 13004 transitions. [2022-07-22 18:27:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 18:27:42,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:42,712 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] [2022-07-22 18:27:42,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:27:42,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:42,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1059619418, now seen corresponding path program 1 times [2022-07-22 18:27:42,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:42,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991442702] [2022-07-22 18:27:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:42,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:42,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:42,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991442702] [2022-07-22 18:27:42,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991442702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:42,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:42,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:27:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208212649] [2022-07-22 18:27:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:42,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 18:27:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 18:27:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:27:42,856 INFO L87 Difference]: Start difference. First operand 8578 states and 13004 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:47,915 INFO L93 Difference]: Finished difference Result 40498 states and 60925 transitions. [2022-07-22 18:27:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:27:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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 68 [2022-07-22 18:27:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:47,960 INFO L225 Difference]: With dead ends: 40498 [2022-07-22 18:27:47,961 INFO L226 Difference]: Without dead ends: 32583 [2022-07-22 18:27:47,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-22 18:27:47,981 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1990 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:47,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 1917 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 18:27:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32583 states. [2022-07-22 18:27:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32583 to 8728. [2022-07-22 18:27:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8728 states, 8727 states have (on average 1.5092242465910393) internal successors, (13171), 8727 states have internal predecessors, (13171), 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) [2022-07-22 18:27:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8728 states to 8728 states and 13171 transitions. [2022-07-22 18:27:49,320 INFO L78 Accepts]: Start accepts. Automaton has 8728 states and 13171 transitions. Word has length 68 [2022-07-22 18:27:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:49,321 INFO L495 AbstractCegarLoop]: Abstraction has 8728 states and 13171 transitions. [2022-07-22 18:27:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 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) [2022-07-22 18:27:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 8728 states and 13171 transitions. [2022-07-22 18:27:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:27:49,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:49,325 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] [2022-07-22 18:27:49,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:27:49,325 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:49,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:49,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1047773961, now seen corresponding path program 1 times [2022-07-22 18:27:49,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:49,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698553792] [2022-07-22 18:27:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:49,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:49,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698553792] [2022-07-22 18:27:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698553792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:49,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:49,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:27:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800213627] [2022-07-22 18:27:49,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:49,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:27:49,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:49,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:27:49,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:27:49,416 INFO L87 Difference]: Start difference. First operand 8728 states and 13171 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-22 18:27:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:51,597 INFO L93 Difference]: Finished difference Result 22788 states and 34565 transitions. [2022-07-22 18:27:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:27:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 69 [2022-07-22 18:27:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:51,629 INFO L225 Difference]: With dead ends: 22788 [2022-07-22 18:27:51,630 INFO L226 Difference]: Without dead ends: 15138 [2022-07-22 18:27:51,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:27:51,648 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:51,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 605 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:27:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2022-07-22 18:27:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 15032. [2022-07-22 18:27:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15032 states, 15031 states have (on average 1.4989687978178432) internal successors, (22531), 15031 states have internal predecessors, (22531), 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) [2022-07-22 18:27:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15032 states to 15032 states and 22531 transitions. [2022-07-22 18:27:53,739 INFO L78 Accepts]: Start accepts. Automaton has 15032 states and 22531 transitions. Word has length 69 [2022-07-22 18:27:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 15032 states and 22531 transitions. [2022-07-22 18:27:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-22 18:27:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15032 states and 22531 transitions. [2022-07-22 18:27:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:27:53,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:53,743 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] [2022-07-22 18:27:53,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:27:53,744 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:53,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1802228217, now seen corresponding path program 1 times [2022-07-22 18:27:53,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:53,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528900118] [2022-07-22 18:27:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:53,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:53,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528900118] [2022-07-22 18:27:53,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528900118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:53,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:53,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:27:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21944846] [2022-07-22 18:27:53,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:27:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:53,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:27:53,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:27:53,782 INFO L87 Difference]: Start difference. First operand 15032 states and 22531 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:27:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:27:56,475 INFO L93 Difference]: Finished difference Result 27396 states and 41148 transitions. [2022-07-22 18:27:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:27:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:27:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:27:56,498 INFO L225 Difference]: With dead ends: 27396 [2022-07-22 18:27:56,499 INFO L226 Difference]: Without dead ends: 18430 [2022-07-22 18:27:56,507 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 [2022-07-22 18:27:56,508 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 156 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:27:56,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:27:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18430 states. [2022-07-22 18:27:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18430 to 18212. [2022-07-22 18:27:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18212 states, 18211 states have (on average 1.479215858547032) internal successors, (26938), 18211 states have internal predecessors, (26938), 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) [2022-07-22 18:27:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18212 states to 18212 states and 26938 transitions. [2022-07-22 18:27:59,082 INFO L78 Accepts]: Start accepts. Automaton has 18212 states and 26938 transitions. Word has length 69 [2022-07-22 18:27:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:27:59,082 INFO L495 AbstractCegarLoop]: Abstraction has 18212 states and 26938 transitions. [2022-07-22 18:27:59,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:27:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 18212 states and 26938 transitions. [2022-07-22 18:27:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:27:59,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:27:59,086 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] [2022-07-22 18:27:59,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:27:59,087 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:27:59,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:27:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1041130329, now seen corresponding path program 1 times [2022-07-22 18:27:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:27:59,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137471259] [2022-07-22 18:27:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:27:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:27:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:27:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:27:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:27:59,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137471259] [2022-07-22 18:27:59,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137471259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:27:59,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:27:59,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:27:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071922339] [2022-07-22 18:27:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:27:59,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:27:59,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:27:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:27:59,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:27:59,121 INFO L87 Difference]: Start difference. First operand 18212 states and 26938 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:28:02,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:28:02,763 INFO L93 Difference]: Finished difference Result 40144 states and 59521 transitions. [2022-07-22 18:28:02,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:28:02,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:28:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:28:02,794 INFO L225 Difference]: With dead ends: 40144 [2022-07-22 18:28:02,794 INFO L226 Difference]: Without dead ends: 24348 [2022-07-22 18:28:02,809 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 [2022-07-22 18:28:02,810 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 175 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:28:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 464 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:28:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24348 states. [2022-07-22 18:28:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24348 to 24282. [2022-07-22 18:28:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24282 states, 24281 states have (on average 1.4636958939088176) internal successors, (35540), 24281 states have internal predecessors, (35540), 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) [2022-07-22 18:28:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24282 states to 24282 states and 35540 transitions. [2022-07-22 18:28:06,572 INFO L78 Accepts]: Start accepts. Automaton has 24282 states and 35540 transitions. Word has length 69 [2022-07-22 18:28:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:28:06,573 INFO L495 AbstractCegarLoop]: Abstraction has 24282 states and 35540 transitions. [2022-07-22 18:28:06,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:28:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 24282 states and 35540 transitions. [2022-07-22 18:28:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:28:06,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:28:06,577 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] [2022-07-22 18:28:06,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:28:06,577 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:28:06,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:28:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash -933815240, now seen corresponding path program 1 times [2022-07-22 18:28:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:28:06,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947935792] [2022-07-22 18:28:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:28:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:28:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:28:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:28:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:28:06,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947935792] [2022-07-22 18:28:06,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947935792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:28:06,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:28:06,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:28:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617453199] [2022-07-22 18:28:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:28:06,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:28:06,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:28:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:28:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:28:06,611 INFO L87 Difference]: Start difference. First operand 24282 states and 35540 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:28:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:28:10,676 INFO L93 Difference]: Finished difference Result 33907 states and 49406 transitions. [2022-07-22 18:28:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:28:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:28:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:28:10,716 INFO L225 Difference]: With dead ends: 33907 [2022-07-22 18:28:10,717 INFO L226 Difference]: Without dead ends: 24823 [2022-07-22 18:28:10,727 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 [2022-07-22 18:28:10,728 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 143 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:28:10,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 464 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:28:10,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24823 states. [2022-07-22 18:28:14,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24823 to 22225. [2022-07-22 18:28:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22225 states, 22224 states have (on average 1.4353401727861772) internal successors, (31899), 22224 states have internal predecessors, (31899), 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) [2022-07-22 18:28:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 31899 transitions. [2022-07-22 18:28:14,399 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 31899 transitions. Word has length 69 [2022-07-22 18:28:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:28:14,399 INFO L495 AbstractCegarLoop]: Abstraction has 22225 states and 31899 transitions. [2022-07-22 18:28:14,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:28:14,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 31899 transitions. [2022-07-22 18:28:14,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:28:14,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:28:14,403 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] [2022-07-22 18:28:14,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:28:14,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:28:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:28:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash 804290264, now seen corresponding path program 1 times [2022-07-22 18:28:14,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:28:14,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139110630] [2022-07-22 18:28:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:28:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:28:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:28:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:28:14,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:28:14,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139110630] [2022-07-22 18:28:14,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139110630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:28:14,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:28:14,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:28:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409989055] [2022-07-22 18:28:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:28:14,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:28:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:28:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:28:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:28:14,441 INFO L87 Difference]: Start difference. First operand 22225 states and 31899 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:28:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:28:19,125 INFO L93 Difference]: Finished difference Result 44870 states and 64241 transitions. [2022-07-22 18:28:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:28:19,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2022-07-22 18:28:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:28:19,163 INFO L225 Difference]: With dead ends: 44870 [2022-07-22 18:28:19,163 INFO L226 Difference]: Without dead ends: 25148 [2022-07-22 18:28:19,181 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 [2022-07-22 18:28:19,181 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 161 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:28:19,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 554 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:28:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25148 states. [2022-07-22 18:28:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25148 to 24902. [2022-07-22 18:28:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24902 states, 24901 states have (on average 1.398417734227541) internal successors, (34822), 24901 states have internal predecessors, (34822), 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) [2022-07-22 18:28:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24902 states to 24902 states and 34822 transitions. [2022-07-22 18:28:23,688 INFO L78 Accepts]: Start accepts. Automaton has 24902 states and 34822 transitions. Word has length 69 [2022-07-22 18:28:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:28:23,688 INFO L495 AbstractCegarLoop]: Abstraction has 24902 states and 34822 transitions. [2022-07-22 18:28:23,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2022-07-22 18:28:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24902 states and 34822 transitions. [2022-07-22 18:28:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:28:23,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:28:23,691 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] [2022-07-22 18:28:23,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:28:23,691 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:28:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:28:23,692 INFO L85 PathProgramCache]: Analyzing trace with hash -77781245, now seen corresponding path program 1 times [2022-07-22 18:28:23,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:28:23,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9001571] [2022-07-22 18:28:23,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:28:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:28:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:28:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:28:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:28:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9001571] [2022-07-22 18:28:23,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9001571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:28:23,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:28:23,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:28:23,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632208344] [2022-07-22 18:28:23,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:28:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:28:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:28:23,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:28:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:28:23,743 INFO L87 Difference]: Start difference. First operand 24902 states and 34822 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:28:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:28:31,813 INFO L93 Difference]: Finished difference Result 52991 states and 74773 transitions. [2022-07-22 18:28:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:28:31,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-07-22 18:28:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:28:31,872 INFO L225 Difference]: With dead ends: 52991 [2022-07-22 18:28:31,872 INFO L226 Difference]: Without dead ends: 42897 [2022-07-22 18:28:31,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:28:31,890 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1084 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:28:31,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1133 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:28:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42897 states. [2022-07-22 18:28:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42897 to 34310. [2022-07-22 18:28:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34310 states, 34309 states have (on average 1.398787490162931) internal successors, (47991), 34309 states have internal predecessors, (47991), 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) [2022-07-22 18:28:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34310 states to 34310 states and 47991 transitions. [2022-07-22 18:28:38,520 INFO L78 Accepts]: Start accepts. Automaton has 34310 states and 47991 transitions. Word has length 70 [2022-07-22 18:28:38,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:28:38,520 INFO L495 AbstractCegarLoop]: Abstraction has 34310 states and 47991 transitions. [2022-07-22 18:28:38,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:28:38,520 INFO L276 IsEmpty]: Start isEmpty. Operand 34310 states and 47991 transitions. [2022-07-22 18:28:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:28:38,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:28:38,523 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] [2022-07-22 18:28:38,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:28:38,524 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:28:38,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:28:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1497723701, now seen corresponding path program 1 times [2022-07-22 18:28:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:28:38,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171932573] [2022-07-22 18:28:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:28:38,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:28:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:28:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:28:38,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:28:38,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171932573] [2022-07-22 18:28:38,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171932573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:28:38,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:28:38,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:28:38,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210215702] [2022-07-22 18:28:38,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:28:38,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:28:38,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:28:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:28:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:28:38,579 INFO L87 Difference]: Start difference. First operand 34310 states and 47991 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:28:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:28:48,097 INFO L93 Difference]: Finished difference Result 52476 states and 73830 transitions. [2022-07-22 18:28:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:28:48,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-07-22 18:28:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:28:48,173 INFO L225 Difference]: With dead ends: 52476 [2022-07-22 18:28:48,173 INFO L226 Difference]: Without dead ends: 49486 [2022-07-22 18:28:48,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:28:48,190 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1106 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:28:48,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1210 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:28:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49486 states. [2022-07-22 18:28:55,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49486 to 37253. [2022-07-22 18:28:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37253 states, 37252 states have (on average 1.3991731987544294) internal successors, (52122), 37252 states have internal predecessors, (52122), 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) [2022-07-22 18:28:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37253 states to 37253 states and 52122 transitions. [2022-07-22 18:28:55,459 INFO L78 Accepts]: Start accepts. Automaton has 37253 states and 52122 transitions. Word has length 70 [2022-07-22 18:28:55,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:28:55,459 INFO L495 AbstractCegarLoop]: Abstraction has 37253 states and 52122 transitions. [2022-07-22 18:28:55,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:28:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 37253 states and 52122 transitions. [2022-07-22 18:28:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:28:55,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:28:55,462 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] [2022-07-22 18:28:55,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:28:55,462 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:28:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:28:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1024658010, now seen corresponding path program 1 times [2022-07-22 18:28:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:28:55,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900644648] [2022-07-22 18:28:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:28:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:28:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:28:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:28:55,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:28:55,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900644648] [2022-07-22 18:28:55,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900644648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:28:55,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:28:55,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:28:55,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210738855] [2022-07-22 18:28:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:28:55,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:28:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:28:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:28:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:28:55,521 INFO L87 Difference]: Start difference. First operand 37253 states and 52122 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:29:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:29:05,681 INFO L93 Difference]: Finished difference Result 58967 states and 82997 transitions. [2022-07-22 18:29:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:29:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-07-22 18:29:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:29:05,771 INFO L225 Difference]: With dead ends: 58967 [2022-07-22 18:29:05,771 INFO L226 Difference]: Without dead ends: 52353 [2022-07-22 18:29:05,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:29:05,787 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1032 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:29:05,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1336 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:29:05,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52353 states. [2022-07-22 18:29:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52353 to 41438. [2022-07-22 18:29:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41438 states, 41437 states have (on average 1.401187344643676) internal successors, (58061), 41437 states have internal predecessors, (58061), 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) [2022-07-22 18:29:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41438 states to 41438 states and 58061 transitions. [2022-07-22 18:29:14,306 INFO L78 Accepts]: Start accepts. Automaton has 41438 states and 58061 transitions. Word has length 70 [2022-07-22 18:29:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:29:14,306 INFO L495 AbstractCegarLoop]: Abstraction has 41438 states and 58061 transitions. [2022-07-22 18:29:14,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:29:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 41438 states and 58061 transitions. [2022-07-22 18:29:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 18:29:14,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:29:14,310 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] [2022-07-22 18:29:14,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:29:14,310 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:29:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:29:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1354981296, now seen corresponding path program 1 times [2022-07-22 18:29:14,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:29:14,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270382307] [2022-07-22 18:29:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:29:14,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:29:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:29:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:29:14,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:29:14,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270382307] [2022-07-22 18:29:14,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270382307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:29:14,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:29:14,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:29:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536190234] [2022-07-22 18:29:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:29:14,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:29:14,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:29:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:29:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:29:14,361 INFO L87 Difference]: Start difference. First operand 41438 states and 58061 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:29:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:29:27,263 INFO L93 Difference]: Finished difference Result 71179 states and 100265 transitions. [2022-07-22 18:29:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:29:27,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-07-22 18:29:27,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:29:27,363 INFO L225 Difference]: With dead ends: 71179 [2022-07-22 18:29:27,363 INFO L226 Difference]: Without dead ends: 60738 [2022-07-22 18:29:27,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:29:27,387 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1090 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:29:27,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1290 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:29:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60738 states. [2022-07-22 18:29:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60738 to 45936. [2022-07-22 18:29:37,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45936 states, 45935 states have (on average 1.4016327419179275) internal successors, (64384), 45935 states have internal predecessors, (64384), 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) [2022-07-22 18:29:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45936 states to 45936 states and 64384 transitions. [2022-07-22 18:29:37,269 INFO L78 Accepts]: Start accepts. Automaton has 45936 states and 64384 transitions. Word has length 70 [2022-07-22 18:29:37,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:29:37,269 INFO L495 AbstractCegarLoop]: Abstraction has 45936 states and 64384 transitions. [2022-07-22 18:29:37,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-07-22 18:29:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 45936 states and 64384 transitions. [2022-07-22 18:29:37,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:29:37,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:29:37,274 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] [2022-07-22 18:29:37,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:29:37,274 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:29:37,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:29:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 143463778, now seen corresponding path program 1 times [2022-07-22 18:29:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:29:37,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511212294] [2022-07-22 18:29:37,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:29:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:29:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:29:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:29:37,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:29:37,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511212294] [2022-07-22 18:29:37,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511212294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:29:37,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:29:37,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:29:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833440389] [2022-07-22 18:29:37,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:29:37,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:29:37,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:29:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:29:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:29:37,332 INFO L87 Difference]: Start difference. First operand 45936 states and 64384 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 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)