./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-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 a7994e4b0bfbe275d233e5a25c7b22888e2d55ba388328f1fc4435f77ac9412d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:44:04,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:44:04,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:44:04,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:44:04,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:44:04,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:44:04,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:44:04,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:44:04,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:44:04,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:44:04,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:44:04,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:44:04,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:44:04,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:44:04,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:44:04,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:44:04,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:44:04,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:44:04,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:44:04,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:44:04,299 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:44:04,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:44:04,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:44:04,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:44:04,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:44:04,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:44:04,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:44:04,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:44:04,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:44:04,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:44:04,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:44:04,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:44:04,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:44:04,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:44:04,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:44:04,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:44:04,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:44:04,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:44:04,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:44:04,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:44:04,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:44:04,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:44:04,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:44:04,344 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:44:04,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:44:04,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:44:04,345 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:44:04,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:44:04,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:44:04,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:44:04,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:44:04,346 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:44:04,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:44:04,347 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:44:04,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:44:04,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:44:04,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:44:04,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:44:04,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:44:04,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:44:04,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:44:04,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:44:04,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:44:04,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:44:04,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:44:04,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:44:04,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:44:04,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:44:04,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:44:04,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:44:04,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:44:04,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:44:04,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:44:04,350 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:44:04,350 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:44:04,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:44:04,350 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7994e4b0bfbe275d233e5a25c7b22888e2d55ba388328f1fc4435f77ac9412d [2022-07-21 05:44:04,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:44:04,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:44:04,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:44:04,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:44:04,707 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:44:04,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-21 05:44:04,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e244483/eb3a0f2b3f8d4a4884e907e4c3788264/FLAG47ac486bc [2022-07-21 05:44:05,199 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:44:05,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-21 05:44:05,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e244483/eb3a0f2b3f8d4a4884e907e4c3788264/FLAG47ac486bc [2022-07-21 05:44:05,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e244483/eb3a0f2b3f8d4a4884e907e4c3788264 [2022-07-21 05:44:05,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:44:05,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:44:05,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:44:05,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:44:05,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:44:05,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38719327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05, skipping insertion in model container [2022-07-21 05:44:05,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:44:05,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:44:05,835 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.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4409,4422] [2022-07-21 05:44:05,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:44:05,872 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:44:05,902 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.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4409,4422] [2022-07-21 05:44:05,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:44:05,948 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:44:05,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05 WrapperNode [2022-07-21 05:44:05,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:44:05,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:44:05,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:44:05,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:44:05,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,985 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 328 [2022-07-21 05:44:05,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:44:05,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:44:05,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:44:05,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:44:05,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:05,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:06,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:06,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:06,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:06,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:44:06,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:44:06,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:44:06,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:44:06,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (1/1) ... [2022-07-21 05:44:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:44:06,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:44:06,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:44:06,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:44:06,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:44:06,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:44:06,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:44:06,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:44:06,213 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:44:06,214 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:44:06,582 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:44:06,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:44:06,589 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:44:06,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:44:06 BoogieIcfgContainer [2022-07-21 05:44:06,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:44:06,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:44:06,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:44:06,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:44:06,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:44:05" (1/3) ... [2022-07-21 05:44:06,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a5b2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:44:06, skipping insertion in model container [2022-07-21 05:44:06,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:44:05" (2/3) ... [2022-07-21 05:44:06,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a5b2d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:44:06, skipping insertion in model container [2022-07-21 05:44:06,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:44:06" (3/3) ... [2022-07-21 05:44:06,614 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-21 05:44:06,641 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:44:06,641 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:44:06,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:44:06,710 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@78ae8726, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@711393f [2022-07-21 05:44:06,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:44:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 85 states have (on average 1.6705882352941177) internal successors, (142), 86 states have internal predecessors, (142), 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) [2022-07-21 05:44:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 05:44:06,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:06,720 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] [2022-07-21 05:44:06,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:06,726 INFO L85 PathProgramCache]: Analyzing trace with hash 716810707, now seen corresponding path program 1 times [2022-07-21 05:44:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:06,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930179072] [2022-07-21 05:44:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:07,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930179072] [2022-07-21 05:44:07,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930179072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:07,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:07,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998750596] [2022-07-21 05:44:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:07,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:07,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:07,059 INFO L87 Difference]: Start difference. First operand has 87 states, 85 states have (on average 1.6705882352941177) internal successors, (142), 86 states have internal predecessors, (142), 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 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-07-21 05:44:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:07,141 INFO L93 Difference]: Finished difference Result 205 states and 324 transitions. [2022-07-21 05:44:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:07,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2022-07-21 05:44:07,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:07,155 INFO L225 Difference]: With dead ends: 205 [2022-07-21 05:44:07,155 INFO L226 Difference]: Without dead ends: 132 [2022-07-21 05:44:07,160 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 [2022-07-21 05:44:07,164 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 94 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:07,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:07,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-07-21 05:44:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2022-07-21 05:44:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.503875968992248) internal successors, (194), 129 states have internal predecessors, (194), 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) [2022-07-21 05:44:07,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 194 transitions. [2022-07-21 05:44:07,229 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 194 transitions. Word has length 38 [2022-07-21 05:44:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:07,229 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 194 transitions. [2022-07-21 05:44:07,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-07-21 05:44:07,230 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 194 transitions. [2022-07-21 05:44:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 05:44:07,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:07,232 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] [2022-07-21 05:44:07,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:44:07,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash -935293361, now seen corresponding path program 1 times [2022-07-21 05:44:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:07,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662549853] [2022-07-21 05:44:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662549853] [2022-07-21 05:44:07,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662549853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:07,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:07,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546356015] [2022-07-21 05:44:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:07,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:07,372 INFO L87 Difference]: Start difference. First operand 130 states and 194 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-07-21 05:44:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:07,407 INFO L93 Difference]: Finished difference Result 318 states and 490 transitions. [2022-07-21 05:44:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2022-07-21 05:44:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:07,410 INFO L225 Difference]: With dead ends: 318 [2022-07-21 05:44:07,410 INFO L226 Difference]: Without dead ends: 208 [2022-07-21 05:44:07,411 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 [2022-07-21 05:44:07,412 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 79 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:07,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-21 05:44:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2022-07-21 05:44:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.526829268292683) internal successors, (313), 205 states have internal predecessors, (313), 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) [2022-07-21 05:44:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 313 transitions. [2022-07-21 05:44:07,455 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 313 transitions. Word has length 39 [2022-07-21 05:44:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:07,456 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 313 transitions. [2022-07-21 05:44:07,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-07-21 05:44:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 313 transitions. [2022-07-21 05:44:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 05:44:07,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:07,460 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] [2022-07-21 05:44:07,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:44:07,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:07,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash 830312666, now seen corresponding path program 1 times [2022-07-21 05:44:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:07,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135048026] [2022-07-21 05:44:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:07,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135048026] [2022-07-21 05:44:07,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135048026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:07,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:07,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:44:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060331938] [2022-07-21 05:44:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:07,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:07,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:07,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:07,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:07,559 INFO L87 Difference]: Start difference. First operand 206 states and 313 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-07-21 05:44:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:07,718 INFO L93 Difference]: Finished difference Result 950 states and 1485 transitions. [2022-07-21 05:44:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:44:07,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 40 [2022-07-21 05:44:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:07,723 INFO L225 Difference]: With dead ends: 950 [2022-07-21 05:44:07,723 INFO L226 Difference]: Without dead ends: 764 [2022-07-21 05:44:07,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:44:07,731 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:07,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 676 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:44:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-07-21 05:44:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 390. [2022-07-21 05:44:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5347043701799485) internal successors, (597), 389 states have internal predecessors, (597), 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) [2022-07-21 05:44:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 597 transitions. [2022-07-21 05:44:07,782 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 597 transitions. Word has length 40 [2022-07-21 05:44:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:07,783 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 597 transitions. [2022-07-21 05:44:07,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-07-21 05:44:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 597 transitions. [2022-07-21 05:44:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 05:44:07,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:07,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:07,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:44:07,789 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:07,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash -49567444, now seen corresponding path program 1 times [2022-07-21 05:44:07,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:07,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130361492] [2022-07-21 05:44:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:07,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:07,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130361492] [2022-07-21 05:44:07,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130361492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:07,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:07,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:44:07,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755011155] [2022-07-21 05:44:07,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:07,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:07,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:07,902 INFO L87 Difference]: Start difference. First operand 390 states and 597 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:44:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:08,068 INFO L93 Difference]: Finished difference Result 1348 states and 2080 transitions. [2022-07-21 05:44:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:44:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-21 05:44:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:08,077 INFO L225 Difference]: With dead ends: 1348 [2022-07-21 05:44:08,077 INFO L226 Difference]: Without dead ends: 978 [2022-07-21 05:44:08,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:08,088 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 310 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:08,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 373 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:08,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-07-21 05:44:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 974. [2022-07-21 05:44:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.5344295991778005) internal successors, (1493), 973 states have internal predecessors, (1493), 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) [2022-07-21 05:44:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1493 transitions. [2022-07-21 05:44:08,204 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1493 transitions. Word has length 41 [2022-07-21 05:44:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:08,207 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1493 transitions. [2022-07-21 05:44:08,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:44:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1493 transitions. [2022-07-21 05:44:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 05:44:08,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:08,210 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] [2022-07-21 05:44:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:44:08,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1536012938, now seen corresponding path program 1 times [2022-07-21 05:44:08,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:08,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778167419] [2022-07-21 05:44:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:08,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:08,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778167419] [2022-07-21 05:44:08,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778167419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:08,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:08,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:08,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521944385] [2022-07-21 05:44:08,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:08,278 INFO L87 Difference]: Start difference. First operand 974 states and 1493 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-07-21 05:44:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:08,446 INFO L93 Difference]: Finished difference Result 2490 states and 3807 transitions. [2022-07-21 05:44:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2022-07-21 05:44:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:08,453 INFO L225 Difference]: With dead ends: 2490 [2022-07-21 05:44:08,453 INFO L226 Difference]: Without dead ends: 1536 [2022-07-21 05:44:08,454 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 [2022-07-21 05:44:08,455 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 86 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:08,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 275 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:08,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2022-07-21 05:44:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1534. [2022-07-21 05:44:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 1.5061969993476843) internal successors, (2309), 1533 states have internal predecessors, (2309), 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) [2022-07-21 05:44:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2309 transitions. [2022-07-21 05:44:08,621 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2309 transitions. Word has length 42 [2022-07-21 05:44:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:08,622 INFO L495 AbstractCegarLoop]: Abstraction has 1534 states and 2309 transitions. [2022-07-21 05:44:08,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-07-21 05:44:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2309 transitions. [2022-07-21 05:44:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 05:44:08,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:08,625 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] [2022-07-21 05:44:08,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:44:08,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1650560821, now seen corresponding path program 1 times [2022-07-21 05:44:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:08,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812239170] [2022-07-21 05:44:08,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:08,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812239170] [2022-07-21 05:44:08,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812239170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:08,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:08,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:44:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620617041] [2022-07-21 05:44:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:08,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:08,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:08,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:08,695 INFO L87 Difference]: Start difference. First operand 1534 states and 2309 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-07-21 05:44:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:09,056 INFO L93 Difference]: Finished difference Result 4106 states and 6199 transitions. [2022-07-21 05:44:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:44:09,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2022-07-21 05:44:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:09,066 INFO L225 Difference]: With dead ends: 4106 [2022-07-21 05:44:09,066 INFO L226 Difference]: Without dead ends: 2592 [2022-07-21 05:44:09,068 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 [2022-07-21 05:44:09,068 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 522 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:09,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 137 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:44:09,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2022-07-21 05:44:09,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2590. [2022-07-21 05:44:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2589 states have (on average 1.4943993820007726) internal successors, (3869), 2589 states have internal predecessors, (3869), 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) [2022-07-21 05:44:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3869 transitions. [2022-07-21 05:44:09,342 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3869 transitions. Word has length 43 [2022-07-21 05:44:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:09,342 INFO L495 AbstractCegarLoop]: Abstraction has 2590 states and 3869 transitions. [2022-07-21 05:44:09,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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) [2022-07-21 05:44:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3869 transitions. [2022-07-21 05:44:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 05:44:09,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:09,345 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] [2022-07-21 05:44:09,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:44:09,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:09,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 836148826, now seen corresponding path program 1 times [2022-07-21 05:44:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:09,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434208431] [2022-07-21 05:44:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:09,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434208431] [2022-07-21 05:44:09,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434208431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:09,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:09,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:44:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207105938] [2022-07-21 05:44:09,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:09,466 INFO L87 Difference]: Start difference. First operand 2590 states and 3869 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-07-21 05:44:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:10,026 INFO L93 Difference]: Finished difference Result 5320 states and 7878 transitions. [2022-07-21 05:44:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:44:10,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2022-07-21 05:44:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:10,050 INFO L225 Difference]: With dead ends: 5320 [2022-07-21 05:44:10,050 INFO L226 Difference]: Without dead ends: 5318 [2022-07-21 05:44:10,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:44:10,054 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 190 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:10,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 585 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2022-07-21 05:44:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 2750. [2022-07-21 05:44:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2749 states have (on average 1.46562386322299) internal successors, (4029), 2749 states have internal predecessors, (4029), 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) [2022-07-21 05:44:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4029 transitions. [2022-07-21 05:44:10,396 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4029 transitions. Word has length 43 [2022-07-21 05:44:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:10,397 INFO L495 AbstractCegarLoop]: Abstraction has 2750 states and 4029 transitions. [2022-07-21 05:44:10,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-07-21 05:44:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4029 transitions. [2022-07-21 05:44:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 05:44:10,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:10,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:10,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:44:10,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash 161382844, now seen corresponding path program 1 times [2022-07-21 05:44:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:10,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135602639] [2022-07-21 05:44:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:10,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:10,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:10,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135602639] [2022-07-21 05:44:10,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135602639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:10,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:10,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:10,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039304116] [2022-07-21 05:44:10,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:10,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:10,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:10,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:10,442 INFO L87 Difference]: Start difference. First operand 2750 states and 4029 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-07-21 05:44:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:10,853 INFO L93 Difference]: Finished difference Result 6192 states and 9053 transitions. [2022-07-21 05:44:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2022-07-21 05:44:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:10,869 INFO L225 Difference]: With dead ends: 6192 [2022-07-21 05:44:10,869 INFO L226 Difference]: Without dead ends: 3462 [2022-07-21 05:44:10,874 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 [2022-07-21 05:44:10,874 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:10,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 214 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2022-07-21 05:44:11,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3440. [2022-07-21 05:44:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 3439 states have (on average 1.4489677231753417) internal successors, (4983), 3439 states have internal predecessors, (4983), 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) [2022-07-21 05:44:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4983 transitions. [2022-07-21 05:44:11,260 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4983 transitions. Word has length 44 [2022-07-21 05:44:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:11,260 INFO L495 AbstractCegarLoop]: Abstraction has 3440 states and 4983 transitions. [2022-07-21 05:44:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2022-07-21 05:44:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4983 transitions. [2022-07-21 05:44:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:44:11,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:11,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:11,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:44:11,263 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1477612707, now seen corresponding path program 1 times [2022-07-21 05:44:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:11,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226417708] [2022-07-21 05:44:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:11,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:11,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226417708] [2022-07-21 05:44:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226417708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:11,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:11,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617545462] [2022-07-21 05:44:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:11,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:11,299 INFO L87 Difference]: Start difference. First operand 3440 states and 4983 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-21 05:44:11,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:11,811 INFO L93 Difference]: Finished difference Result 8581 states and 12443 transitions. [2022-07-21 05:44:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-21 05:44:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:11,831 INFO L225 Difference]: With dead ends: 8581 [2022-07-21 05:44:11,832 INFO L226 Difference]: Without dead ends: 5763 [2022-07-21 05:44:11,836 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 [2022-07-21 05:44:11,836 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:11,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 277 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5763 states. [2022-07-21 05:44:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5763 to 5761. [2022-07-21 05:44:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 5760 states have (on average 1.4314236111111112) internal successors, (8245), 5760 states have internal predecessors, (8245), 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) [2022-07-21 05:44:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8245 transitions. [2022-07-21 05:44:12,586 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8245 transitions. Word has length 63 [2022-07-21 05:44:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:12,587 INFO L495 AbstractCegarLoop]: Abstraction has 5761 states and 8245 transitions. [2022-07-21 05:44:12,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-21 05:44:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8245 transitions. [2022-07-21 05:44:12,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:44:12,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:12,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:12,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:44:12,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:12,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:12,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1700716252, now seen corresponding path program 1 times [2022-07-21 05:44:12,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:12,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060650459] [2022-07-21 05:44:12,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:12,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:12,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060650459] [2022-07-21 05:44:12,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060650459] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:44:12,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145398806] [2022-07-21 05:44:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:12,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:44:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:44:12,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:44:12,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:44:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:12,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 05:44:12,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:44:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:44:13,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:44:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:44:13,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145398806] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:44:13,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:44:13,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 14 [2022-07-21 05:44:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675803345] [2022-07-21 05:44:13,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:44:13,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 05:44:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:13,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 05:44:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:44:13,264 INFO L87 Difference]: Start difference. First operand 5761 states and 8245 transitions. Second operand has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 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) [2022-07-21 05:44:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:20,999 INFO L93 Difference]: Finished difference Result 41391 states and 58063 transitions. [2022-07-21 05:44:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-07-21 05:44:20,999 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 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 63 [2022-07-21 05:44:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:21,103 INFO L225 Difference]: With dead ends: 41391 [2022-07-21 05:44:21,104 INFO L226 Difference]: Without dead ends: 36165 [2022-07-21 05:44:21,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4264 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2025, Invalid=8687, Unknown=0, NotChecked=0, Total=10712 [2022-07-21 05:44:21,131 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 3971 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3971 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:21,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3971 Valid, 2420 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 05:44:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36165 states. [2022-07-21 05:44:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36165 to 20253. [2022-07-21 05:44:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20253 states, 20252 states have (on average 1.3977878728026862) internal successors, (28308), 20252 states have internal predecessors, (28308), 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) [2022-07-21 05:44:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20253 states to 20253 states and 28308 transitions. [2022-07-21 05:44:23,821 INFO L78 Accepts]: Start accepts. Automaton has 20253 states and 28308 transitions. Word has length 63 [2022-07-21 05:44:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:23,821 INFO L495 AbstractCegarLoop]: Abstraction has 20253 states and 28308 transitions. [2022-07-21 05:44:23,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.642857142857142) internal successors, (177), 14 states have internal predecessors, (177), 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) [2022-07-21 05:44:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 20253 states and 28308 transitions. [2022-07-21 05:44:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:44:23,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:23,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:23,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 05:44:24,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 05:44:24,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:24,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1091273178, now seen corresponding path program 1 times [2022-07-21 05:44:24,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:24,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888024463] [2022-07-21 05:44:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 05:44:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888024463] [2022-07-21 05:44:24,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888024463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:24,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:24,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:44:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339490791] [2022-07-21 05:44:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:24,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:24,111 INFO L87 Difference]: Start difference. First operand 20253 states and 28308 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2022-07-21 05:44:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:26,794 INFO L93 Difference]: Finished difference Result 37312 states and 52454 transitions. [2022-07-21 05:44:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:44:26,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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 63 [2022-07-21 05:44:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:26,859 INFO L225 Difference]: With dead ends: 37312 [2022-07-21 05:44:26,859 INFO L226 Difference]: Without dead ends: 28602 [2022-07-21 05:44:26,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:44:26,883 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 352 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:26,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 572 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28602 states. [2022-07-21 05:44:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28602 to 26425. [2022-07-21 05:44:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26425 states, 26424 states have (on average 1.3909703300030276) internal successors, (36755), 26424 states have internal predecessors, (36755), 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) [2022-07-21 05:44:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26425 states to 26425 states and 36755 transitions. [2022-07-21 05:44:30,172 INFO L78 Accepts]: Start accepts. Automaton has 26425 states and 36755 transitions. Word has length 63 [2022-07-21 05:44:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:30,173 INFO L495 AbstractCegarLoop]: Abstraction has 26425 states and 36755 transitions. [2022-07-21 05:44:30,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2022-07-21 05:44:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 26425 states and 36755 transitions. [2022-07-21 05:44:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:44:30,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:30,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:44:30,179 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1327011341, now seen corresponding path program 1 times [2022-07-21 05:44:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:30,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840082718] [2022-07-21 05:44:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:30,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:30,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:30,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840082718] [2022-07-21 05:44:30,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840082718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:30,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:30,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:30,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079424071] [2022-07-21 05:44:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:30,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:30,214 INFO L87 Difference]: Start difference. First operand 26425 states and 36755 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-21 05:44:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:33,299 INFO L93 Difference]: Finished difference Result 45840 states and 63626 transitions. [2022-07-21 05:44:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-07-21 05:44:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:33,358 INFO L225 Difference]: With dead ends: 45840 [2022-07-21 05:44:33,359 INFO L226 Difference]: Without dead ends: 27453 [2022-07-21 05:44:33,394 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 [2022-07-21 05:44:33,395 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 69 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:33,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 270 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27453 states. [2022-07-21 05:44:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27453 to 26532. [2022-07-21 05:44:36,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26532 states, 26531 states have (on average 1.3648185141909464) internal successors, (36210), 26531 states have internal predecessors, (36210), 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) [2022-07-21 05:44:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26532 states to 26532 states and 36210 transitions. [2022-07-21 05:44:36,068 INFO L78 Accepts]: Start accepts. Automaton has 26532 states and 36210 transitions. Word has length 63 [2022-07-21 05:44:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:36,068 INFO L495 AbstractCegarLoop]: Abstraction has 26532 states and 36210 transitions. [2022-07-21 05:44:36,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2022-07-21 05:44:36,069 INFO L276 IsEmpty]: Start isEmpty. Operand 26532 states and 36210 transitions. [2022-07-21 05:44:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:44:36,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:36,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:44:36,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash 161019487, now seen corresponding path program 1 times [2022-07-21 05:44:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:36,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518288347] [2022-07-21 05:44:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 05:44:36,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:36,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518288347] [2022-07-21 05:44:36,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518288347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:36,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:36,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:44:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577003700] [2022-07-21 05:44:36,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:36,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:36,120 INFO L87 Difference]: Start difference. First operand 26532 states and 36210 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2022-07-21 05:44:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:39,556 INFO L93 Difference]: Finished difference Result 37676 states and 51959 transitions. [2022-07-21 05:44:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:44:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 63 [2022-07-21 05:44:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:39,604 INFO L225 Difference]: With dead ends: 37676 [2022-07-21 05:44:39,605 INFO L226 Difference]: Without dead ends: 33112 [2022-07-21 05:44:39,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:44:39,618 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 359 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:39,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 552 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:39,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33112 states. [2022-07-21 05:44:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33112 to 30914. [2022-07-21 05:44:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30914 states, 30913 states have (on average 1.367579982531621) internal successors, (42276), 30913 states have internal predecessors, (42276), 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) [2022-07-21 05:44:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30914 states to 30914 states and 42276 transitions. [2022-07-21 05:44:42,713 INFO L78 Accepts]: Start accepts. Automaton has 30914 states and 42276 transitions. Word has length 63 [2022-07-21 05:44:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:42,713 INFO L495 AbstractCegarLoop]: Abstraction has 30914 states and 42276 transitions. [2022-07-21 05:44:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2022-07-21 05:44:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30914 states and 42276 transitions. [2022-07-21 05:44:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:44:42,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:42,718 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:42,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:44:42,718 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1004794437, now seen corresponding path program 1 times [2022-07-21 05:44:42,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:42,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756471444] [2022-07-21 05:44:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:42,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:42,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756471444] [2022-07-21 05:44:42,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756471444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:42,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:42,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563674552] [2022-07-21 05:44:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:42,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:42,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:42,753 INFO L87 Difference]: Start difference. First operand 30914 states and 42276 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2022-07-21 05:44:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:45,361 INFO L93 Difference]: Finished difference Result 44728 states and 60921 transitions. [2022-07-21 05:44:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 [2022-07-21 05:44:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:45,402 INFO L225 Difference]: With dead ends: 44728 [2022-07-21 05:44:45,402 INFO L226 Difference]: Without dead ends: 26717 [2022-07-21 05:44:45,424 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 [2022-07-21 05:44:45,425 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 64 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:45,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 254 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26717 states. [2022-07-21 05:44:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26717 to 26650. [2022-07-21 05:44:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26650 states, 26649 states have (on average 1.3541971556155954) internal successors, (36088), 26649 states have internal predecessors, (36088), 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) [2022-07-21 05:44:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26650 states to 26650 states and 36088 transitions. [2022-07-21 05:44:48,235 INFO L78 Accepts]: Start accepts. Automaton has 26650 states and 36088 transitions. Word has length 64 [2022-07-21 05:44:48,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:48,235 INFO L495 AbstractCegarLoop]: Abstraction has 26650 states and 36088 transitions. [2022-07-21 05:44:48,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2022-07-21 05:44:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 26650 states and 36088 transitions. [2022-07-21 05:44:48,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 05:44:48,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:48,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:48,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:44:48,240 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:48,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1607670003, now seen corresponding path program 1 times [2022-07-21 05:44:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:48,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722330897] [2022-07-21 05:44:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 05:44:48,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:48,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722330897] [2022-07-21 05:44:48,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722330897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:48,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:48,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:44:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969307112] [2022-07-21 05:44:48,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:48,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:44:48,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:44:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:44:48,283 INFO L87 Difference]: Start difference. First operand 26650 states and 36088 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2022-07-21 05:44:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:51,665 INFO L93 Difference]: Finished difference Result 35744 states and 48608 transitions. [2022-07-21 05:44:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:44:51,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 65 [2022-07-21 05:44:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:51,710 INFO L225 Difference]: With dead ends: 35744 [2022-07-21 05:44:51,710 INFO L226 Difference]: Without dead ends: 31334 [2022-07-21 05:44:51,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:44:51,724 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 335 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:51,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 590 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31334 states. [2022-07-21 05:44:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31334 to 29639. [2022-07-21 05:44:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29639 states, 29638 states have (on average 1.3508671300357649) internal successors, (40037), 29638 states have internal predecessors, (40037), 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) [2022-07-21 05:44:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29639 states to 29639 states and 40037 transitions. [2022-07-21 05:44:54,832 INFO L78 Accepts]: Start accepts. Automaton has 29639 states and 40037 transitions. Word has length 65 [2022-07-21 05:44:54,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:44:54,832 INFO L495 AbstractCegarLoop]: Abstraction has 29639 states and 40037 transitions. [2022-07-21 05:44:54,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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) [2022-07-21 05:44:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 29639 states and 40037 transitions. [2022-07-21 05:44:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 05:44:54,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:44:54,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:44:54,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:44:54,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:44:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:44:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1264098906, now seen corresponding path program 1 times [2022-07-21 05:44:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:44:54,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381199236] [2022-07-21 05:44:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:44:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:44:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:44:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:44:54,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:44:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381199236] [2022-07-21 05:44:54,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381199236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:44:54,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:44:54,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:44:54,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453806328] [2022-07-21 05:44:54,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:44:54,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:44:54,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:44:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:44:54,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:44:54,873 INFO L87 Difference]: Start difference. First operand 29639 states and 40037 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-21 05:44:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:44:59,438 INFO L93 Difference]: Finished difference Result 66758 states and 90014 transitions. [2022-07-21 05:44:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:44:59,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 [2022-07-21 05:44:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:44:59,497 INFO L225 Difference]: With dead ends: 66758 [2022-07-21 05:44:59,498 INFO L226 Difference]: Without dead ends: 43390 [2022-07-21 05:44:59,518 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 [2022-07-21 05:44:59,519 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 65 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:44:59,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 260 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:44:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43390 states. [2022-07-21 05:45:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43390 to 43388. [2022-07-21 05:45:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43388 states, 43387 states have (on average 1.3288312167239034) internal successors, (57654), 43387 states have internal predecessors, (57654), 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) [2022-07-21 05:45:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43388 states to 43388 states and 57654 transitions. [2022-07-21 05:45:04,022 INFO L78 Accepts]: Start accepts. Automaton has 43388 states and 57654 transitions. Word has length 66 [2022-07-21 05:45:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:45:04,022 INFO L495 AbstractCegarLoop]: Abstraction has 43388 states and 57654 transitions. [2022-07-21 05:45:04,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-07-21 05:45:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 43388 states and 57654 transitions. [2022-07-21 05:45:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 05:45:04,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:45:04,029 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:45:04,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:45:04,029 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:45:04,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:45:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash 742997775, now seen corresponding path program 1 times [2022-07-21 05:45:04,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:45:04,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648787466] [2022-07-21 05:45:04,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:45:04,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:45:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:45:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:45:04,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:45:04,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648787466] [2022-07-21 05:45:04,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648787466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:45:04,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:45:04,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:45:04,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20524414] [2022-07-21 05:45:04,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:45:04,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:45:04,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:45:04,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:45:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:45:04,078 INFO L87 Difference]: Start difference. First operand 43388 states and 57654 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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) [2022-07-21 05:45:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:45:11,062 INFO L93 Difference]: Finished difference Result 105106 states and 139352 transitions. [2022-07-21 05:45:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:45:11,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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 68 [2022-07-21 05:45:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:45:11,360 INFO L225 Difference]: With dead ends: 105106 [2022-07-21 05:45:11,361 INFO L226 Difference]: Without dead ends: 61775 [2022-07-21 05:45:11,435 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 [2022-07-21 05:45:11,436 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 480 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:45:11,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 141 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:45:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61775 states. [2022-07-21 05:45:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61775 to 61345. [2022-07-21 05:45:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61345 states, 61344 states have (on average 1.3134454877412625) internal successors, (80572), 61344 states have internal predecessors, (80572), 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) [2022-07-21 05:45:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61345 states to 61345 states and 80572 transitions. [2022-07-21 05:45:18,531 INFO L78 Accepts]: Start accepts. Automaton has 61345 states and 80572 transitions. Word has length 68 [2022-07-21 05:45:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:45:18,532 INFO L495 AbstractCegarLoop]: Abstraction has 61345 states and 80572 transitions. [2022-07-21 05:45:18,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 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) [2022-07-21 05:45:18,532 INFO L276 IsEmpty]: Start isEmpty. Operand 61345 states and 80572 transitions. [2022-07-21 05:45:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 05:45:18,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:45:18,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:45:18,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:45:18,539 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:45:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:45:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2008828340, now seen corresponding path program 1 times [2022-07-21 05:45:18,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:45:18,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627892394] [2022-07-21 05:45:18,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:45:18,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:45:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:45:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 05:45:18,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:45:18,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627892394] [2022-07-21 05:45:18,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627892394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:45:18,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:45:18,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:45:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178136522] [2022-07-21 05:45:18,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:45:18,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:45:18,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:45:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:45:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:45:18,579 INFO L87 Difference]: Start difference. First operand 61345 states and 80572 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) [2022-07-21 05:45:28,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:45:28,746 INFO L93 Difference]: Finished difference Result 138758 states and 181933 transitions. [2022-07-21 05:45:28,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:45:28,746 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 68 [2022-07-21 05:45:28,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:45:28,859 INFO L225 Difference]: With dead ends: 138758 [2022-07-21 05:45:28,859 INFO L226 Difference]: Without dead ends: 77500 [2022-07-21 05:45:28,904 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 [2022-07-21 05:45:28,905 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 460 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:45:28,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 149 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:45:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77500 states.