./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-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 1a76dc897aa0702a7581955a590e68a0e3d7c15bffbb5939a80772bf70ad5d7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:04:52,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:04:52,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:04:52,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:04:52,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:04:52,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:04:52,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:04:52,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:04:52,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:04:52,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:04:52,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:04:52,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:04:52,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:04:52,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:04:52,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:04:52,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:04:52,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:04:52,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:04:52,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:04:52,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:04:52,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:04:52,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:04:52,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:04:52,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:04:52,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:04:52,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:04:52,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:04:52,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:04:52,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:04:52,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:04:52,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:04:52,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:04:52,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:04:52,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:04:52,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:04:52,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:04:52,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:04:52,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:04:52,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:04:52,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:04:52,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:04:52,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:04:52,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:04:52,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:04:52,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:04:52,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:04:52,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:04:52,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:04:52,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:04:52,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:04:52,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:04:52,300 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:04:52,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:04:52,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:04:52,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:04:52,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:04:52,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:04:52,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:04:52,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:04:52,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:04:52,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:04:52,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:04:52,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:04:52,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:04:52,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:04:52,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:04:52,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:04:52,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:04:52,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:04:52,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:04:52,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:04:52,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:04:52,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:04:52,304 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:04:52,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:04:52,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:04:52,305 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a76dc897aa0702a7581955a590e68a0e3d7c15bffbb5939a80772bf70ad5d7a [2022-07-12 07:04:52,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:04:52,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:04:52,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:04:52,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:04:52,556 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:04:52,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-07-12 07:04:52,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff769f8/a28a4a9a18aa4b4a998abeada53a787f/FLAGa7d713d1b [2022-07-12 07:04:53,139 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:04:53,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-07-12 07:04:53,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff769f8/a28a4a9a18aa4b4a998abeada53a787f/FLAGa7d713d1b [2022-07-12 07:04:53,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff769f8/a28a4a9a18aa4b4a998abeada53a787f [2022-07-12 07:04:53,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:04:53,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:04:53,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:04:53,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:04:53,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:04:53,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:04:53" (1/1) ... [2022-07-12 07:04:53,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea14a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:53, skipping insertion in model container [2022-07-12 07:04:53,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:04:53" (1/1) ... [2022-07-12 07:04:53,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:04:53,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:04:53,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2022-07-12 07:04:54,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2022-07-12 07:04:54,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:04:54,173 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:04:54,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2022-07-12 07:04:54,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2022-07-12 07:04:54,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:04:54,465 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:04:54,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54 WrapperNode [2022-07-12 07:04:54,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:04:54,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:04:54,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:04:54,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:04:54,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,580 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3564 [2022-07-12 07:04:54,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:04:54,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:04:54,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:04:54,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:04:54,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:04:54,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:04:54,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:04:54,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:04:54,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (1/1) ... [2022-07-12 07:04:54,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:04:54,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:04:54,696 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) [2022-07-12 07:04:54,703 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 [2022-07-12 07:04:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:04:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:04:54,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:04:54,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:04:54,945 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:04:54,946 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:04:56,128 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:04:56,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:04:56,142 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:04:56,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:04:56 BoogieIcfgContainer [2022-07-12 07:04:56,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:04:56,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:04:56,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:04:56,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:04:56,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:04:53" (1/3) ... [2022-07-12 07:04:56,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778247b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:04:56, skipping insertion in model container [2022-07-12 07:04:56,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:54" (2/3) ... [2022-07-12 07:04:56,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778247b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:04:56, skipping insertion in model container [2022-07-12 07:04:56,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:04:56" (3/3) ... [2022-07-12 07:04:56,151 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-07-12 07:04:56,161 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:04:56,161 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 07:04:56,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:04:56,284 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@1c370317, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d1012b3 [2022-07-12 07:04:56,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 07:04:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 705 states, 702 states have (on average 1.7834757834757835) internal successors, (1252), 704 states have internal predecessors, (1252), 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) [2022-07-12 07:04:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 07:04:56,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:56,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:56,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:56,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash -377035951, now seen corresponding path program 1 times [2022-07-12 07:04:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:56,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118032299] [2022-07-12 07:04:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:56,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118032299] [2022-07-12 07:04:56,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118032299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:56,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:56,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:04:56,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677698513] [2022-07-12 07:04:56,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:56,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:04:56,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:56,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:04:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:04:56,563 INFO L87 Difference]: Start difference. First operand has 705 states, 702 states have (on average 1.7834757834757835) internal successors, (1252), 704 states have internal predecessors, (1252), 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 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) [2022-07-12 07:04:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:56,715 INFO L93 Difference]: Finished difference Result 1069 states and 1856 transitions. [2022-07-12 07:04:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:04:56,718 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 [2022-07-12 07:04:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:56,730 INFO L225 Difference]: With dead ends: 1069 [2022-07-12 07:04:56,731 INFO L226 Difference]: Without dead ends: 846 [2022-07-12 07:04:56,733 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 [2022-07-12 07:04:56,735 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 631 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:56,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2079 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:04:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-07-12 07:04:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-07-12 07:04:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.368171021377672) internal successors, (1152), 843 states have internal predecessors, (1152), 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) [2022-07-12 07:04:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1152 transitions. [2022-07-12 07:04:56,843 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1152 transitions. Word has length 63 [2022-07-12 07:04:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:56,844 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1152 transitions. [2022-07-12 07:04:56,844 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) [2022-07-12 07:04:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1152 transitions. [2022-07-12 07:04:56,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:04:56,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:56,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:56,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:04:56,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:56,854 INFO L85 PathProgramCache]: Analyzing trace with hash 714072948, now seen corresponding path program 1 times [2022-07-12 07:04:56,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:56,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527833331] [2022-07-12 07:04:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:56,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:56,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:56,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:56,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527833331] [2022-07-12 07:04:56,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527833331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:56,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:56,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:04:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585232542] [2022-07-12 07:04:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:04:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:04:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:04:56,974 INFO L87 Difference]: Start difference. First operand 844 states and 1152 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) [2022-07-12 07:04:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:57,099 INFO L93 Difference]: Finished difference Result 1471 states and 2026 transitions. [2022-07-12 07:04:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:04:57,125 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 [2022-07-12 07:04:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:57,135 INFO L225 Difference]: With dead ends: 1471 [2022-07-12 07:04:57,135 INFO L226 Difference]: Without dead ends: 1228 [2022-07-12 07:04:57,139 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 [2022-07-12 07:04:57,140 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 549 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:57,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1683 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:04:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-07-12 07:04:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1224. [2022-07-12 07:04:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1222 states have (on average 1.3543371522094927) internal successors, (1655), 1223 states have internal predecessors, (1655), 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) [2022-07-12 07:04:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1655 transitions. [2022-07-12 07:04:57,202 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1655 transitions. Word has length 64 [2022-07-12 07:04:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:57,203 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1655 transitions. [2022-07-12 07:04:57,203 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) [2022-07-12 07:04:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1655 transitions. [2022-07-12 07:04:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:04:57,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:57,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:57,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:04:57,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1908609010, now seen corresponding path program 1 times [2022-07-12 07:04:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:57,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786179576] [2022-07-12 07:04:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:57,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:57,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786179576] [2022-07-12 07:04:57,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786179576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:57,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:04:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448288693] [2022-07-12 07:04:57,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:57,358 INFO L87 Difference]: Start difference. First operand 1224 states and 1655 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2022-07-12 07:04:57,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:57,777 INFO L93 Difference]: Finished difference Result 2482 states and 3457 transitions. [2022-07-12 07:04:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:04:57,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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 [2022-07-12 07:04:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:57,784 INFO L225 Difference]: With dead ends: 2482 [2022-07-12 07:04:57,785 INFO L226 Difference]: Without dead ends: 1483 [2022-07-12 07:04:57,789 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 [2022-07-12 07:04:57,792 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 2604 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2604 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:57,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2604 Valid, 575 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:04:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2022-07-12 07:04:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2022-07-12 07:04:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1479 states have (on average 1.3955375253549696) internal successors, (2064), 1480 states have internal predecessors, (2064), 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) [2022-07-12 07:04:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2064 transitions. [2022-07-12 07:04:57,869 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2064 transitions. Word has length 64 [2022-07-12 07:04:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:57,871 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 2064 transitions. [2022-07-12 07:04:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 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) [2022-07-12 07:04:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2064 transitions. [2022-07-12 07:04:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 07:04:57,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:57,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:04:57,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1292035188, now seen corresponding path program 1 times [2022-07-12 07:04:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:57,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672470992] [2022-07-12 07:04:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672470992] [2022-07-12 07:04:57,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672470992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:57,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:57,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:04:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751489579] [2022-07-12 07:04:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:57,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:04:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:04:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:04:57,955 INFO L87 Difference]: Start difference. First operand 1481 states and 2064 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-07-12 07:04:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:58,075 INFO L93 Difference]: Finished difference Result 2949 states and 4174 transitions. [2022-07-12 07:04:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:04:58,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 07:04:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:58,083 INFO L225 Difference]: With dead ends: 2949 [2022-07-12 07:04:58,084 INFO L226 Difference]: Without dead ends: 2074 [2022-07-12 07:04:58,085 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 [2022-07-12 07:04:58,086 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 578 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:58,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1484 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:04:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-07-12 07:04:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2068. [2022-07-12 07:04:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2066 states have (on average 1.3799612778315586) internal successors, (2851), 2067 states have internal predecessors, (2851), 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) [2022-07-12 07:04:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2851 transitions. [2022-07-12 07:04:58,188 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2851 transitions. Word has length 65 [2022-07-12 07:04:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:58,188 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 2851 transitions. [2022-07-12 07:04:58,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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) [2022-07-12 07:04:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2851 transitions. [2022-07-12 07:04:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:04:58,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:58,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:58,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:04:58,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1184582392, now seen corresponding path program 1 times [2022-07-12 07:04:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:58,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133645127] [2022-07-12 07:04:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:58,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133645127] [2022-07-12 07:04:58,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133645127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:58,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:58,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:04:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106965995] [2022-07-12 07:04:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:04:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:04:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:04:58,238 INFO L87 Difference]: Start difference. First operand 2068 states and 2851 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) [2022-07-12 07:04:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:58,399 INFO L93 Difference]: Finished difference Result 4442 states and 6243 transitions. [2022-07-12 07:04:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:04:58,400 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 [2022-07-12 07:04:58,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:58,409 INFO L225 Difference]: With dead ends: 4442 [2022-07-12 07:04:58,410 INFO L226 Difference]: Without dead ends: 3159 [2022-07-12 07:04:58,412 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 [2022-07-12 07:04:58,413 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 396 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:58,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1441 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:04:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2022-07-12 07:04:58,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 3155. [2022-07-12 07:04:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 3153 states have (on average 1.3799555978433238) internal successors, (4351), 3154 states have internal predecessors, (4351), 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) [2022-07-12 07:04:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4351 transitions. [2022-07-12 07:04:58,563 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4351 transitions. Word has length 66 [2022-07-12 07:04:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:58,564 INFO L495 AbstractCegarLoop]: Abstraction has 3155 states and 4351 transitions. [2022-07-12 07:04:58,564 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) [2022-07-12 07:04:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4351 transitions. [2022-07-12 07:04:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:04:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:58,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:04:58,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:58,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash -237880367, now seen corresponding path program 1 times [2022-07-12 07:04:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:58,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523154782] [2022-07-12 07:04:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:58,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:58,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:58,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523154782] [2022-07-12 07:04:58,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523154782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:58,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:58,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:04:58,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812632162] [2022-07-12 07:04:58,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:58,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:58,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:58,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:58,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:58,617 INFO L87 Difference]: Start difference. First operand 3155 states and 4351 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) [2022-07-12 07:04:59,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:59,120 INFO L93 Difference]: Finished difference Result 6802 states and 9465 transitions. [2022-07-12 07:04:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:04:59,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:04:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:59,133 INFO L225 Difference]: With dead ends: 6802 [2022-07-12 07:04:59,133 INFO L226 Difference]: Without dead ends: 3982 [2022-07-12 07:04:59,139 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 [2022-07-12 07:04:59,141 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 2272 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:59,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 522 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:04:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2022-07-12 07:04:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3966. [2022-07-12 07:04:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 3964 states have (on average 1.3816851664984864) internal successors, (5477), 3965 states have internal predecessors, (5477), 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) [2022-07-12 07:04:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5477 transitions. [2022-07-12 07:04:59,344 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5477 transitions. Word has length 66 [2022-07-12 07:04:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:59,344 INFO L495 AbstractCegarLoop]: Abstraction has 3966 states and 5477 transitions. [2022-07-12 07:04:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5477 transitions. [2022-07-12 07:04:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:04:59,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:59,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:59,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:04:59,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:59,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:59,349 INFO L85 PathProgramCache]: Analyzing trace with hash 426192215, now seen corresponding path program 1 times [2022-07-12 07:04:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:59,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830385392] [2022-07-12 07:04:59,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:59,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830385392] [2022-07-12 07:04:59,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830385392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:59,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:59,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:04:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299769262] [2022-07-12 07:04:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:59,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:04:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:04:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:04:59,410 INFO L87 Difference]: Start difference. First operand 3966 states and 5477 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:00,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:00,549 INFO L93 Difference]: Finished difference Result 13636 states and 19360 transitions. [2022-07-12 07:05:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:05:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:05:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:00,589 INFO L225 Difference]: With dead ends: 13636 [2022-07-12 07:05:00,590 INFO L226 Difference]: Without dead ends: 12452 [2022-07-12 07:05:00,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:05:00,595 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 4810 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4810 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:00,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4810 Valid, 1029 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:05:00,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2022-07-12 07:05:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 3990. [2022-07-12 07:05:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 3988 states have (on average 1.381394182547643) internal successors, (5509), 3989 states have internal predecessors, (5509), 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) [2022-07-12 07:05:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5509 transitions. [2022-07-12 07:05:00,907 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5509 transitions. Word has length 67 [2022-07-12 07:05:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:00,907 INFO L495 AbstractCegarLoop]: Abstraction has 3990 states and 5509 transitions. [2022-07-12 07:05:00,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5509 transitions. [2022-07-12 07:05:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:05:00,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:00,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:00,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:05:00,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:00,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:00,911 INFO L85 PathProgramCache]: Analyzing trace with hash -889016011, now seen corresponding path program 1 times [2022-07-12 07:05:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:00,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108151363] [2022-07-12 07:05:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:00,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108151363] [2022-07-12 07:05:00,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108151363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:00,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:00,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:05:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177839809] [2022-07-12 07:05:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:05:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:05:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:05:00,954 INFO L87 Difference]: Start difference. First operand 3990 states and 5509 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:01,546 INFO L93 Difference]: Finished difference Result 9015 states and 12509 transitions. [2022-07-12 07:05:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:05:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:05:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:01,556 INFO L225 Difference]: With dead ends: 9015 [2022-07-12 07:05:01,556 INFO L226 Difference]: Without dead ends: 5335 [2022-07-12 07:05:01,561 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 [2022-07-12 07:05:01,561 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 2344 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:01,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2344 Valid, 530 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:05:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2022-07-12 07:05:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 3990. [2022-07-12 07:05:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 3988 states have (on average 1.376629889669007) internal successors, (5490), 3989 states have internal predecessors, (5490), 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) [2022-07-12 07:05:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5490 transitions. [2022-07-12 07:05:01,847 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5490 transitions. Word has length 67 [2022-07-12 07:05:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:01,848 INFO L495 AbstractCegarLoop]: Abstraction has 3990 states and 5490 transitions. [2022-07-12 07:05:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:01,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5490 transitions. [2022-07-12 07:05:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:05:01,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:01,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:05:01,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -132013379, now seen corresponding path program 1 times [2022-07-12 07:05:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:01,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638471929] [2022-07-12 07:05:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:01,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:01,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638471929] [2022-07-12 07:05:01,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638471929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:01,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:01,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:05:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217422279] [2022-07-12 07:05:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:01,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:05:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:05:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:05:01,905 INFO L87 Difference]: Start difference. First operand 3990 states and 5490 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:02,532 INFO L93 Difference]: Finished difference Result 8904 states and 12251 transitions. [2022-07-12 07:05:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:05:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:05:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:02,541 INFO L225 Difference]: With dead ends: 8904 [2022-07-12 07:05:02,542 INFO L226 Difference]: Without dead ends: 5195 [2022-07-12 07:05:02,545 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 [2022-07-12 07:05:02,546 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 2048 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:02,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 487 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:05:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2022-07-12 07:05:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 5173. [2022-07-12 07:05:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5171 states have (on average 1.3612454070779347) internal successors, (7039), 5172 states have internal predecessors, (7039), 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) [2022-07-12 07:05:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 7039 transitions. [2022-07-12 07:05:02,941 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 7039 transitions. Word has length 68 [2022-07-12 07:05:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:02,941 INFO L495 AbstractCegarLoop]: Abstraction has 5173 states and 7039 transitions. [2022-07-12 07:05:02,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 7039 transitions. [2022-07-12 07:05:02,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:05:02,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:02,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:02,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:05:02,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:02,946 INFO L85 PathProgramCache]: Analyzing trace with hash -416949424, now seen corresponding path program 1 times [2022-07-12 07:05:02,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:02,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149658603] [2022-07-12 07:05:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:02,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:03,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149658603] [2022-07-12 07:05:03,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149658603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:03,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:03,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:05:03,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770830759] [2022-07-12 07:05:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:03,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:05:03,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:05:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:05:03,043 INFO L87 Difference]: Start difference. First operand 5173 states and 7039 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:04,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:04,910 INFO L93 Difference]: Finished difference Result 18043 states and 24835 transitions. [2022-07-12 07:05:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:05:04,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:05:04,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:04,937 INFO L225 Difference]: With dead ends: 18043 [2022-07-12 07:05:04,938 INFO L226 Difference]: Without dead ends: 15526 [2022-07-12 07:05:04,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:05:04,945 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 4027 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4027 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:04,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4027 Valid, 942 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:05:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15526 states. [2022-07-12 07:05:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15526 to 5201. [2022-07-12 07:05:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5199 states have (on average 1.3608386228120792) internal successors, (7075), 5200 states have internal predecessors, (7075), 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) [2022-07-12 07:05:05,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 7075 transitions. [2022-07-12 07:05:05,437 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 7075 transitions. Word has length 68 [2022-07-12 07:05:05,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:05,437 INFO L495 AbstractCegarLoop]: Abstraction has 5201 states and 7075 transitions. [2022-07-12 07:05:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 7075 transitions. [2022-07-12 07:05:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:05:05,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:05,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:05,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:05:05,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1441651372, now seen corresponding path program 1 times [2022-07-12 07:05:05,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:05,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963767630] [2022-07-12 07:05:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:05,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:05,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963767630] [2022-07-12 07:05:05,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963767630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:05,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:05,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:05:05,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649909101] [2022-07-12 07:05:05,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:05,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:05:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:05:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:05:05,498 INFO L87 Difference]: Start difference. First operand 5201 states and 7075 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:08,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:08,184 INFO L93 Difference]: Finished difference Result 22119 states and 30848 transitions. [2022-07-12 07:05:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:05:08,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:05:08,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:08,223 INFO L225 Difference]: With dead ends: 22119 [2022-07-12 07:05:08,223 INFO L226 Difference]: Without dead ends: 19883 [2022-07-12 07:05:08,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:05:08,233 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 4222 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4222 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:08,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4222 Valid, 1014 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:05:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19883 states. [2022-07-12 07:05:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19883 to 5298. [2022-07-12 07:05:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5296 states have (on average 1.3602719033232629) internal successors, (7204), 5297 states have internal predecessors, (7204), 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) [2022-07-12 07:05:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 7204 transitions. [2022-07-12 07:05:08,872 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 7204 transitions. Word has length 69 [2022-07-12 07:05:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:08,873 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 7204 transitions. [2022-07-12 07:05:08,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:08,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 7204 transitions. [2022-07-12 07:05:08,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:05:08,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:08,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:08,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:05:08,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:08,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 756148337, now seen corresponding path program 1 times [2022-07-12 07:05:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:08,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941885276] [2022-07-12 07:05:08,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:08,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:09,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941885276] [2022-07-12 07:05:09,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941885276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:09,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:09,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:05:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491423939] [2022-07-12 07:05:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:05:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:09,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:05:09,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:05:09,022 INFO L87 Difference]: Start difference. First operand 5298 states and 7204 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:12,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:12,353 INFO L93 Difference]: Finished difference Result 18360 states and 25279 transitions. [2022-07-12 07:05:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:05:12,354 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:05:12,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:12,381 INFO L225 Difference]: With dead ends: 18360 [2022-07-12 07:05:12,381 INFO L226 Difference]: Without dead ends: 16715 [2022-07-12 07:05:12,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-07-12 07:05:12,388 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 2970 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2970 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:12,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2970 Valid, 2661 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 07:05:12,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16715 states. [2022-07-12 07:05:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16715 to 5298. [2022-07-12 07:05:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5296 states have (on average 1.3598942598187311) internal successors, (7202), 5297 states have internal predecessors, (7202), 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) [2022-07-12 07:05:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 7202 transitions. [2022-07-12 07:05:13,060 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 7202 transitions. Word has length 70 [2022-07-12 07:05:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:13,061 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 7202 transitions. [2022-07-12 07:05:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 7202 transitions. [2022-07-12 07:05:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:05:13,066 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:13,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:13,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:05:13,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash -223540144, now seen corresponding path program 1 times [2022-07-12 07:05:13,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:13,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201867784] [2022-07-12 07:05:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:13,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:13,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:13,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201867784] [2022-07-12 07:05:13,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201867784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:13,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:13,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:05:13,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151035710] [2022-07-12 07:05:13,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:13,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:05:13,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:13,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:05:13,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:05:13,169 INFO L87 Difference]: Start difference. First operand 5298 states and 7202 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:15,896 INFO L93 Difference]: Finished difference Result 16196 states and 22583 transitions. [2022-07-12 07:05:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:05:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:05:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:15,914 INFO L225 Difference]: With dead ends: 16196 [2022-07-12 07:05:15,914 INFO L226 Difference]: Without dead ends: 13108 [2022-07-12 07:05:15,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:05:15,921 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3397 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:15,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3397 Valid, 1920 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:05:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13108 states. [2022-07-12 07:05:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 5294. [2022-07-12 07:05:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5292 states have (on average 1.3594104308390023) internal successors, (7194), 5293 states have internal predecessors, (7194), 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) [2022-07-12 07:05:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 7194 transitions. [2022-07-12 07:05:16,602 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 7194 transitions. Word has length 70 [2022-07-12 07:05:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:16,602 INFO L495 AbstractCegarLoop]: Abstraction has 5294 states and 7194 transitions. [2022-07-12 07:05:16,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:16,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 7194 transitions. [2022-07-12 07:05:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:05:16,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:16,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:05:16,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 66854135, now seen corresponding path program 1 times [2022-07-12 07:05:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:16,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773028220] [2022-07-12 07:05:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:16,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:16,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773028220] [2022-07-12 07:05:16,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773028220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:16,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:16,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:05:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342691594] [2022-07-12 07:05:16,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:16,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:05:16,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:05:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:05:16,827 INFO L87 Difference]: Start difference. First operand 5294 states and 7194 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2022-07-12 07:05:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:21,662 INFO L93 Difference]: Finished difference Result 24800 states and 34783 transitions. [2022-07-12 07:05:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 07:05:21,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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 71 [2022-07-12 07:05:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:21,689 INFO L225 Difference]: With dead ends: 24800 [2022-07-12 07:05:21,690 INFO L226 Difference]: Without dead ends: 21588 [2022-07-12 07:05:21,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:05:21,698 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 2989 mSDsluCounter, 5132 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:21,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2989 Valid, 5938 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:05:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21588 states. [2022-07-12 07:05:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21588 to 5154. [2022-07-12 07:05:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 5152 states have (on average 1.361024844720497) internal successors, (7012), 5153 states have internal predecessors, (7012), 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) [2022-07-12 07:05:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7012 transitions. [2022-07-12 07:05:22,639 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7012 transitions. Word has length 71 [2022-07-12 07:05:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:22,640 INFO L495 AbstractCegarLoop]: Abstraction has 5154 states and 7012 transitions. [2022-07-12 07:05:22,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 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) [2022-07-12 07:05:22,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7012 transitions. [2022-07-12 07:05:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:05:22,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:22,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:22,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:05:22,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1113625680, now seen corresponding path program 1 times [2022-07-12 07:05:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:22,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287613979] [2022-07-12 07:05:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:22,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:22,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287613979] [2022-07-12 07:05:22,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287613979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:22,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:22,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:05:22,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604425812] [2022-07-12 07:05:22,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:22,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:05:22,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:05:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:05:22,726 INFO L87 Difference]: Start difference. First operand 5154 states and 7012 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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) [2022-07-12 07:05:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:26,187 INFO L93 Difference]: Finished difference Result 16114 states and 22496 transitions. [2022-07-12 07:05:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:05:26,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 71 [2022-07-12 07:05:26,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:26,202 INFO L225 Difference]: With dead ends: 16114 [2022-07-12 07:05:26,202 INFO L226 Difference]: Without dead ends: 12984 [2022-07-12 07:05:26,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-12 07:05:26,207 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 3379 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:26,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 1776 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:05:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2022-07-12 07:05:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 5130. [2022-07-12 07:05:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5128 states have (on average 1.359789391575663) internal successors, (6973), 5129 states have internal predecessors, (6973), 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) [2022-07-12 07:05:27,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 6973 transitions. [2022-07-12 07:05:27,085 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 6973 transitions. Word has length 71 [2022-07-12 07:05:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:27,085 INFO L495 AbstractCegarLoop]: Abstraction has 5130 states and 6973 transitions. [2022-07-12 07:05:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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) [2022-07-12 07:05:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 6973 transitions. [2022-07-12 07:05:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:05:27,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:27,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:27,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:05:27,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash 468124592, now seen corresponding path program 1 times [2022-07-12 07:05:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:27,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174422206] [2022-07-12 07:05:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:27,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:27,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174422206] [2022-07-12 07:05:27,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174422206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:27,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:27,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:05:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829768197] [2022-07-12 07:05:27,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:05:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:27,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:05:27,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:05:27,347 INFO L87 Difference]: Start difference. First operand 5130 states and 6973 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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) [2022-07-12 07:05:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:35,177 INFO L93 Difference]: Finished difference Result 30776 states and 43185 transitions. [2022-07-12 07:05:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 07:05:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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 71 [2022-07-12 07:05:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:35,222 INFO L225 Difference]: With dead ends: 30776 [2022-07-12 07:05:35,222 INFO L226 Difference]: Without dead ends: 27490 [2022-07-12 07:05:35,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:05:35,234 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 4986 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 4661 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:35,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4986 Valid, 4661 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:05:35,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27490 states. [2022-07-12 07:05:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27490 to 4920. [2022-07-12 07:05:36,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4920 states, 4918 states have (on average 1.3621390809272063) internal successors, (6699), 4919 states have internal predecessors, (6699), 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) [2022-07-12 07:05:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4920 states to 4920 states and 6699 transitions. [2022-07-12 07:05:36,491 INFO L78 Accepts]: Start accepts. Automaton has 4920 states and 6699 transitions. Word has length 71 [2022-07-12 07:05:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:36,492 INFO L495 AbstractCegarLoop]: Abstraction has 4920 states and 6699 transitions. [2022-07-12 07:05:36,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 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) [2022-07-12 07:05:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4920 states and 6699 transitions. [2022-07-12 07:05:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 07:05:36,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:36,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:36,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:05:36,496 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:36,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:36,496 INFO L85 PathProgramCache]: Analyzing trace with hash 525454090, now seen corresponding path program 1 times [2022-07-12 07:05:36,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:36,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236905682] [2022-07-12 07:05:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:36,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:36,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236905682] [2022-07-12 07:05:36,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236905682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:36,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:36,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:05:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118389155] [2022-07-12 07:05:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:05:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:05:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:05:36,560 INFO L87 Difference]: Start difference. First operand 4920 states and 6699 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 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) [2022-07-12 07:05:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:42,454 INFO L93 Difference]: Finished difference Result 19002 states and 26420 transitions. [2022-07-12 07:05:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:05:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 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 71 [2022-07-12 07:05:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:42,477 INFO L225 Difference]: With dead ends: 19002 [2022-07-12 07:05:42,477 INFO L226 Difference]: Without dead ends: 16930 [2022-07-12 07:05:42,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:05:42,486 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2792 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:42,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 1076 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:05:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16930 states. [2022-07-12 07:05:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16930 to 4991. [2022-07-12 07:05:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4991 states, 4989 states have (on average 1.3625977149729405) internal successors, (6798), 4990 states have internal predecessors, (6798), 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) [2022-07-12 07:05:43,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 6798 transitions. [2022-07-12 07:05:43,819 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 6798 transitions. Word has length 71 [2022-07-12 07:05:43,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:43,820 INFO L495 AbstractCegarLoop]: Abstraction has 4991 states and 6798 transitions. [2022-07-12 07:05:43,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 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) [2022-07-12 07:05:43,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 6798 transitions. [2022-07-12 07:05:43,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 07:05:43,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:43,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:43,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 07:05:43,824 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:43,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1951824160, now seen corresponding path program 1 times [2022-07-12 07:05:43,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:43,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650130390] [2022-07-12 07:05:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:43,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:44,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:44,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650130390] [2022-07-12 07:05:44,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650130390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:44,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:44,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:05:44,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587685936] [2022-07-12 07:05:44,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:44,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:05:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:05:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:05:44,135 INFO L87 Difference]: Start difference. First operand 4991 states and 6798 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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) [2022-07-12 07:05:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:53,429 INFO L93 Difference]: Finished difference Result 27528 states and 38714 transitions. [2022-07-12 07:05:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 07:05:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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 72 [2022-07-12 07:05:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:53,458 INFO L225 Difference]: With dead ends: 27528 [2022-07-12 07:05:53,458 INFO L226 Difference]: Without dead ends: 24361 [2022-07-12 07:05:53,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2022-07-12 07:05:53,466 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 3589 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3589 SdHoareTripleChecker+Valid, 5636 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:53,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3589 Valid, 5636 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:05:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24361 states. [2022-07-12 07:05:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24361 to 4904. [2022-07-12 07:05:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4903 states have (on average 1.3599836834591066) internal successors, (6668), 4903 states have internal predecessors, (6668), 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) [2022-07-12 07:05:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6668 transitions. [2022-07-12 07:05:54,962 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6668 transitions. Word has length 72 [2022-07-12 07:05:54,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:54,963 INFO L495 AbstractCegarLoop]: Abstraction has 4904 states and 6668 transitions. [2022-07-12 07:05:54,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 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) [2022-07-12 07:05:54,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6668 transitions. [2022-07-12 07:05:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 07:05:54,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:54,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 07:05:54,967 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:54,967 INFO L85 PathProgramCache]: Analyzing trace with hash 216436712, now seen corresponding path program 1 times [2022-07-12 07:05:54,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:54,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153643868] [2022-07-12 07:05:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153643868] [2022-07-12 07:05:55,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153643868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:55,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:55,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:05:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717507423] [2022-07-12 07:05:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:55,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:05:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:05:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:05:55,123 INFO L87 Difference]: Start difference. First operand 4904 states and 6668 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 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) [2022-07-12 07:06:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:02,898 INFO L93 Difference]: Finished difference Result 21384 states and 29883 transitions. [2022-07-12 07:06:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 07:06:02,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 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 72 [2022-07-12 07:06:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:02,920 INFO L225 Difference]: With dead ends: 21384 [2022-07-12 07:06:02,920 INFO L226 Difference]: Without dead ends: 18054 [2022-07-12 07:06:02,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-07-12 07:06:02,926 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 3178 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:02,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 2669 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 07:06:02,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18054 states. [2022-07-12 07:06:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18054 to 4779. [2022-07-12 07:06:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4778 states have (on average 1.3599832565927166) internal successors, (6498), 4778 states have internal predecessors, (6498), 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) [2022-07-12 07:06:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6498 transitions. [2022-07-12 07:06:04,468 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6498 transitions. Word has length 72 [2022-07-12 07:06:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 6498 transitions. [2022-07-12 07:06:04,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 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) [2022-07-12 07:06:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6498 transitions. [2022-07-12 07:06:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 07:06:04,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:04,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:04,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 07:06:04,472 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:04,473 INFO L85 PathProgramCache]: Analyzing trace with hash 701339809, now seen corresponding path program 1 times [2022-07-12 07:06:04,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:04,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186390487] [2022-07-12 07:06:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:04,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:04,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186390487] [2022-07-12 07:06:04,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186390487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:04,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:04,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:06:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023306251] [2022-07-12 07:06:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:04,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:06:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:04,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:06:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:06:04,720 INFO L87 Difference]: Start difference. First operand 4779 states and 6498 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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) [2022-07-12 07:06:20,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:20,756 INFO L93 Difference]: Finished difference Result 33826 states and 47340 transitions. [2022-07-12 07:06:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 07:06:20,757 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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 73 [2022-07-12 07:06:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:20,806 INFO L225 Difference]: With dead ends: 33826 [2022-07-12 07:06:20,806 INFO L226 Difference]: Without dead ends: 31738 [2022-07-12 07:06:20,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2022-07-12 07:06:20,818 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 5473 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 4144 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:20,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5473 Valid, 4144 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 07:06:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31738 states. [2022-07-12 07:06:22,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31738 to 4779. [2022-07-12 07:06:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4778 states have (on average 1.3597739640016744) internal successors, (6497), 4778 states have internal predecessors, (6497), 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) [2022-07-12 07:06:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6497 transitions. [2022-07-12 07:06:22,866 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6497 transitions. Word has length 73 [2022-07-12 07:06:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:22,866 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 6497 transitions. [2022-07-12 07:06:22,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 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) [2022-07-12 07:06:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6497 transitions. [2022-07-12 07:06:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 07:06:22,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:22,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:22,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 07:06:22,870 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash -39253326, now seen corresponding path program 1 times [2022-07-12 07:06:22,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:22,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524765057] [2022-07-12 07:06:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:22,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524765057] [2022-07-12 07:06:22,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524765057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:22,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:22,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890541872] [2022-07-12 07:06:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:22,898 INFO L87 Difference]: Start difference. First operand 4779 states and 6497 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-07-12 07:06:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:24,846 INFO L93 Difference]: Finished difference Result 7142 states and 9791 transitions. [2022-07-12 07:06:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:24,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-07-12 07:06:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:24,853 INFO L225 Difference]: With dead ends: 7142 [2022-07-12 07:06:24,853 INFO L226 Difference]: Without dead ends: 4781 [2022-07-12 07:06:24,856 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 [2022-07-12 07:06:24,856 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 314 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:24,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1200 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:06:24,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-07-12 07:06:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4779. [2022-07-12 07:06:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4778 states have (on average 1.3486814566764336) internal successors, (6444), 4778 states have internal predecessors, (6444), 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) [2022-07-12 07:06:26,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6444 transitions. [2022-07-12 07:06:26,672 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6444 transitions. Word has length 74 [2022-07-12 07:06:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:26,672 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 6444 transitions. [2022-07-12 07:06:26,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-07-12 07:06:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6444 transitions. [2022-07-12 07:06:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 07:06:26,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:26,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:26,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 07:06:26,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:26,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:26,676 INFO L85 PathProgramCache]: Analyzing trace with hash 753697715, now seen corresponding path program 1 times [2022-07-12 07:06:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:26,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718178283] [2022-07-12 07:06:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:26,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:26,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718178283] [2022-07-12 07:06:26,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718178283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:26,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:26,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259708569] [2022-07-12 07:06:26,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:26,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:26,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:26,715 INFO L87 Difference]: Start difference. First operand 4779 states and 6444 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-07-12 07:06:29,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:29,743 INFO L93 Difference]: Finished difference Result 9363 states and 12771 transitions. [2022-07-12 07:06:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:29,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-07-12 07:06:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:29,752 INFO L225 Difference]: With dead ends: 9363 [2022-07-12 07:06:29,752 INFO L226 Difference]: Without dead ends: 6646 [2022-07-12 07:06:29,754 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 [2022-07-12 07:06:29,755 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 423 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:29,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 561 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:06:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2022-07-12 07:06:32,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6626. [2022-07-12 07:06:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 6625 states have (on average 1.3676981132075472) internal successors, (9061), 6625 states have internal predecessors, (9061), 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) [2022-07-12 07:06:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 9061 transitions. [2022-07-12 07:06:32,606 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 9061 transitions. Word has length 74 [2022-07-12 07:06:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:32,606 INFO L495 AbstractCegarLoop]: Abstraction has 6626 states and 9061 transitions. [2022-07-12 07:06:32,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-07-12 07:06:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 9061 transitions. [2022-07-12 07:06:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 07:06:32,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:32,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:32,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 07:06:32,611 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:32,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1200633410, now seen corresponding path program 1 times [2022-07-12 07:06:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:32,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923715048] [2022-07-12 07:06:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:32,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:32,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923715048] [2022-07-12 07:06:32,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923715048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:32,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:32,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461448780] [2022-07-12 07:06:32,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:32,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:32,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:32,662 INFO L87 Difference]: Start difference. First operand 6626 states and 9061 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:37,336 INFO L93 Difference]: Finished difference Result 14068 states and 19391 transitions. [2022-07-12 07:06:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:37,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 07:06:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:37,347 INFO L225 Difference]: With dead ends: 14068 [2022-07-12 07:06:37,347 INFO L226 Difference]: Without dead ends: 10001 [2022-07-12 07:06:37,350 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 [2022-07-12 07:06:37,350 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 357 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:37,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 537 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:06:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10001 states. [2022-07-12 07:06:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10001 to 9969. [2022-07-12 07:06:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.3815208667736758) internal successors, (13771), 9968 states have internal predecessors, (13771), 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) [2022-07-12 07:06:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13771 transitions. [2022-07-12 07:06:41,909 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13771 transitions. Word has length 75 [2022-07-12 07:06:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:41,909 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 13771 transitions. [2022-07-12 07:06:41,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13771 transitions. [2022-07-12 07:06:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 07:06:41,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:41,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:41,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 07:06:41,914 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash 173641677, now seen corresponding path program 1 times [2022-07-12 07:06:41,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:41,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191746503] [2022-07-12 07:06:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:41,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:41,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191746503] [2022-07-12 07:06:41,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191746503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:41,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:41,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:06:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80026298] [2022-07-12 07:06:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:41,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:06:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:06:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:06:41,960 INFO L87 Difference]: Start difference. First operand 9969 states and 13771 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:47,882 INFO L93 Difference]: Finished difference Result 19047 states and 26438 transitions. [2022-07-12 07:06:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:06:47,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 07:06:47,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:47,898 INFO L225 Difference]: With dead ends: 19047 [2022-07-12 07:06:47,899 INFO L226 Difference]: Without dead ends: 12696 [2022-07-12 07:06:47,906 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 [2022-07-12 07:06:47,906 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 355 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:47,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 617 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:06:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-07-12 07:06:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 9409. [2022-07-12 07:06:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9409 states, 9408 states have (on average 1.3847789115646258) internal successors, (13028), 9408 states have internal predecessors, (13028), 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) [2022-07-12 07:06:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9409 states to 9409 states and 13028 transitions. [2022-07-12 07:06:52,394 INFO L78 Accepts]: Start accepts. Automaton has 9409 states and 13028 transitions. Word has length 75 [2022-07-12 07:06:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:52,394 INFO L495 AbstractCegarLoop]: Abstraction has 9409 states and 13028 transitions. [2022-07-12 07:06:52,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 9409 states and 13028 transitions. [2022-07-12 07:06:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:06:52,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:52,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 07:06:52,404 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:52,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash -859725899, now seen corresponding path program 1 times [2022-07-12 07:06:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:52,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949732056] [2022-07-12 07:06:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:52,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:52,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949732056] [2022-07-12 07:06:52,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949732056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:52,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:52,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 07:06:52,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781818303] [2022-07-12 07:06:52,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:52,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:06:52,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:06:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:06:52,549 INFO L87 Difference]: Start difference. First operand 9409 states and 13028 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 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) [2022-07-12 07:07:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:24,930 INFO L93 Difference]: Finished difference Result 58350 states and 81200 transitions. [2022-07-12 07:07:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 07:07:24,930 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 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 76 [2022-07-12 07:07:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:25,021 INFO L225 Difference]: With dead ends: 58350 [2022-07-12 07:07:25,022 INFO L226 Difference]: Without dead ends: 55492 [2022-07-12 07:07:25,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1349, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 07:07:25,050 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 5197 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:25,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 2881 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 07:07:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55492 states. [2022-07-12 07:07:30,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55492 to 9417. [2022-07-12 07:07:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9417 states, 9416 states have (on average 1.3844519966015294) internal successors, (13036), 9416 states have internal predecessors, (13036), 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) [2022-07-12 07:07:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9417 states to 9417 states and 13036 transitions. [2022-07-12 07:07:30,234 INFO L78 Accepts]: Start accepts. Automaton has 9417 states and 13036 transitions. Word has length 76 [2022-07-12 07:07:30,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:30,234 INFO L495 AbstractCegarLoop]: Abstraction has 9417 states and 13036 transitions. [2022-07-12 07:07:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 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) [2022-07-12 07:07:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 9417 states and 13036 transitions. [2022-07-12 07:07:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 07:07:30,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:30,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:30,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 07:07:30,239 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:30,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash 812559439, now seen corresponding path program 1 times [2022-07-12 07:07:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:30,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917109340] [2022-07-12 07:07:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:30,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:30,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:30,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917109340] [2022-07-12 07:07:30,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917109340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:30,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:30,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:07:30,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138810260] [2022-07-12 07:07:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:30,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:07:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:07:30,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:07:30,315 INFO L87 Difference]: Start difference. First operand 9417 states and 13036 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-07-12 07:07:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:37,885 INFO L93 Difference]: Finished difference Result 15331 states and 21296 transitions. [2022-07-12 07:07:37,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:07:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 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 76 [2022-07-12 07:07:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:37,903 INFO L225 Difference]: With dead ends: 15331 [2022-07-12 07:07:37,903 INFO L226 Difference]: Without dead ends: 12507 [2022-07-12 07:07:37,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:07:37,908 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 2301 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:37,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1318 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:07:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2022-07-12 07:07:42,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 9417. [2022-07-12 07:07:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9417 states, 9416 states have (on average 1.3843457943925233) internal successors, (13035), 9416 states have internal predecessors, (13035), 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) [2022-07-12 07:07:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9417 states to 9417 states and 13035 transitions. [2022-07-12 07:07:42,824 INFO L78 Accepts]: Start accepts. Automaton has 9417 states and 13035 transitions. Word has length 76 [2022-07-12 07:07:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:07:42,824 INFO L495 AbstractCegarLoop]: Abstraction has 9417 states and 13035 transitions. [2022-07-12 07:07:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 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) [2022-07-12 07:07:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 9417 states and 13035 transitions. [2022-07-12 07:07:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:07:42,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:07:42,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:07:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:07:42,829 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:07:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:07:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash 108461126, now seen corresponding path program 1 times [2022-07-12 07:07:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:07:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508227188] [2022-07-12 07:07:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:07:42,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:07:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:07:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:07:42,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:07:42,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508227188] [2022-07-12 07:07:42,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508227188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:07:42,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:07:42,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:07:42,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934983970] [2022-07-12 07:07:42,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:07:42,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:07:42,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:07:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:07:42,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:07:42,916 INFO L87 Difference]: Start difference. First operand 9417 states and 13035 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 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) [2022-07-12 07:07:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:07:55,459 INFO L93 Difference]: Finished difference Result 23576 states and 32790 transitions. [2022-07-12 07:07:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:07:55,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 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 77 [2022-07-12 07:07:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:07:55,487 INFO L225 Difference]: With dead ends: 23576 [2022-07-12 07:07:55,487 INFO L226 Difference]: Without dead ends: 20718 [2022-07-12 07:07:55,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-07-12 07:07:55,495 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1705 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:07:55,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 1558 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:07:55,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20718 states. [2022-07-12 07:08:00,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20718 to 9394. [2022-07-12 07:08:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9394 states, 9393 states have (on average 1.3848610667518364) internal successors, (13008), 9393 states have internal predecessors, (13008), 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) [2022-07-12 07:08:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9394 states to 9394 states and 13008 transitions. [2022-07-12 07:08:00,478 INFO L78 Accepts]: Start accepts. Automaton has 9394 states and 13008 transitions. Word has length 77 [2022-07-12 07:08:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:00,478 INFO L495 AbstractCegarLoop]: Abstraction has 9394 states and 13008 transitions. [2022-07-12 07:08:00,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 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) [2022-07-12 07:08:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 9394 states and 13008 transitions. [2022-07-12 07:08:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:08:00,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:00,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:00,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 07:08:00,482 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1768326172, now seen corresponding path program 1 times [2022-07-12 07:08:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976976585] [2022-07-12 07:08:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:00,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:00,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976976585] [2022-07-12 07:08:00,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976976585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:00,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:00,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:00,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509582267] [2022-07-12 07:08:00,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:00,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:00,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:00,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:00,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:00,514 INFO L87 Difference]: Start difference. First operand 9394 states and 13008 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-07-12 07:08:04,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:04,520 INFO L93 Difference]: Finished difference Result 12620 states and 17492 transitions. [2022-07-12 07:08:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:04,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-07-12 07:08:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:04,530 INFO L225 Difference]: With dead ends: 12620 [2022-07-12 07:08:04,530 INFO L226 Difference]: Without dead ends: 7758 [2022-07-12 07:08:04,534 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 [2022-07-12 07:08:04,535 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 232 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:04,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 775 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2022-07-12 07:08:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 5962. [2022-07-12 07:08:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5961 states have (on average 1.3603422244589833) internal successors, (8109), 5961 states have internal predecessors, (8109), 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) [2022-07-12 07:08:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 8109 transitions. [2022-07-12 07:08:07,565 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 8109 transitions. Word has length 77 [2022-07-12 07:08:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:07,565 INFO L495 AbstractCegarLoop]: Abstraction has 5962 states and 8109 transitions. [2022-07-12 07:08:07,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-07-12 07:08:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 8109 transitions. [2022-07-12 07:08:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:08:07,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:07,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:07,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 07:08:07,569 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:07,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:07,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1645706330, now seen corresponding path program 1 times [2022-07-12 07:08:07,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:07,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025571872] [2022-07-12 07:08:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:07,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:07,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025571872] [2022-07-12 07:08:07,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025571872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:07,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:07,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258958685] [2022-07-12 07:08:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:07,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:07,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:07,620 INFO L87 Difference]: Start difference. First operand 5962 states and 8109 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-07-12 07:08:10,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:10,166 INFO L93 Difference]: Finished difference Result 7993 states and 10882 transitions. [2022-07-12 07:08:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:10,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2022-07-12 07:08:10,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:10,172 INFO L225 Difference]: With dead ends: 7993 [2022-07-12 07:08:10,172 INFO L226 Difference]: Without dead ends: 4997 [2022-07-12 07:08:10,174 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 [2022-07-12 07:08:10,175 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 238 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:10,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 835 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2022-07-12 07:08:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 3930. [2022-07-12 07:08:12,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3929 states have (on average 1.3290913718503437) internal successors, (5222), 3929 states have internal predecessors, (5222), 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) [2022-07-12 07:08:12,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5222 transitions. [2022-07-12 07:08:12,105 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5222 transitions. Word has length 77 [2022-07-12 07:08:12,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:12,105 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5222 transitions. [2022-07-12 07:08:12,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2022-07-12 07:08:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5222 transitions. [2022-07-12 07:08:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 07:08:12,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:12,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:12,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 07:08:12,108 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash 264768951, now seen corresponding path program 1 times [2022-07-12 07:08:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287085141] [2022-07-12 07:08:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:12,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287085141] [2022-07-12 07:08:12,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287085141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:12,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:12,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:08:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224742283] [2022-07-12 07:08:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:12,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:08:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:08:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:08:12,341 INFO L87 Difference]: Start difference. First operand 3930 states and 5222 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 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) [2022-07-12 07:08:20,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:20,773 INFO L93 Difference]: Finished difference Result 12111 states and 16317 transitions. [2022-07-12 07:08:20,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 07:08:20,773 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 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 79 [2022-07-12 07:08:20,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:20,786 INFO L225 Difference]: With dead ends: 12111 [2022-07-12 07:08:20,786 INFO L226 Difference]: Without dead ends: 11956 [2022-07-12 07:08:20,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:08:20,788 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 4415 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:20,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4415 Valid, 3044 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:08:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11956 states. [2022-07-12 07:08:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11956 to 3897. [2022-07-12 07:08:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3896 states have (on average 1.3295687885010268) internal successors, (5180), 3896 states have internal predecessors, (5180), 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) [2022-07-12 07:08:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5180 transitions. [2022-07-12 07:08:22,719 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5180 transitions. Word has length 79 [2022-07-12 07:08:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:22,720 INFO L495 AbstractCegarLoop]: Abstraction has 3897 states and 5180 transitions. [2022-07-12 07:08:22,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 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) [2022-07-12 07:08:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5180 transitions. [2022-07-12 07:08:22,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 07:08:22,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:22,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:22,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 07:08:22,724 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash 974682057, now seen corresponding path program 1 times [2022-07-12 07:08:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:22,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699139657] [2022-07-12 07:08:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:22,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:22,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:22,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699139657] [2022-07-12 07:08:22,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699139657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:22,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:22,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:08:22,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9969290] [2022-07-12 07:08:22,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:08:22,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:08:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:22,768 INFO L87 Difference]: Start difference. First operand 3897 states and 5180 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2022-07-12 07:08:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:28,710 INFO L93 Difference]: Finished difference Result 12619 states and 17272 transitions. [2022-07-12 07:08:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:08:28,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 85 [2022-07-12 07:08:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:28,720 INFO L225 Difference]: With dead ends: 12619 [2022-07-12 07:08:28,721 INFO L226 Difference]: Without dead ends: 9755 [2022-07-12 07:08:28,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:08:28,725 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1756 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:28,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 1191 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:28,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9755 states. [2022-07-12 07:08:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9755 to 6759. [2022-07-12 07:08:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6759 states, 6758 states have (on average 1.3378218407812963) internal successors, (9041), 6758 states have internal predecessors, (9041), 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) [2022-07-12 07:08:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6759 states to 6759 states and 9041 transitions. [2022-07-12 07:08:32,589 INFO L78 Accepts]: Start accepts. Automaton has 6759 states and 9041 transitions. Word has length 85 [2022-07-12 07:08:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:32,589 INFO L495 AbstractCegarLoop]: Abstraction has 6759 states and 9041 transitions. [2022-07-12 07:08:32,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2022-07-12 07:08:32,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6759 states and 9041 transitions. [2022-07-12 07:08:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 07:08:32,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:32,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:32,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 07:08:32,596 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash -567265296, now seen corresponding path program 1 times [2022-07-12 07:08:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821296442] [2022-07-12 07:08:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821296442] [2022-07-12 07:08:32,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821296442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:32,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:32,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:08:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982380475] [2022-07-12 07:08:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:32,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:08:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:08:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:32,647 INFO L87 Difference]: Start difference. First operand 6759 states and 9041 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-07-12 07:08:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:37,633 INFO L93 Difference]: Finished difference Result 8863 states and 11820 transitions. [2022-07-12 07:08:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:08:37,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 86 [2022-07-12 07:08:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:37,643 INFO L225 Difference]: With dead ends: 8863 [2022-07-12 07:08:37,643 INFO L226 Difference]: Without dead ends: 8023 [2022-07-12 07:08:37,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:08:37,645 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1137 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:37,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1077 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:08:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2022-07-12 07:08:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7641. [2022-07-12 07:08:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7641 states, 7640 states have (on average 1.33717277486911) internal successors, (10216), 7640 states have internal predecessors, (10216), 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) [2022-07-12 07:08:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7641 states to 7641 states and 10216 transitions. [2022-07-12 07:08:42,261 INFO L78 Accepts]: Start accepts. Automaton has 7641 states and 10216 transitions. Word has length 86 [2022-07-12 07:08:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:42,262 INFO L495 AbstractCegarLoop]: Abstraction has 7641 states and 10216 transitions. [2022-07-12 07:08:42,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2022-07-12 07:08:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 7641 states and 10216 transitions. [2022-07-12 07:08:42,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 07:08:42,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:42,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:42,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 07:08:42,268 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:42,268 INFO L85 PathProgramCache]: Analyzing trace with hash -238941005, now seen corresponding path program 1 times [2022-07-12 07:08:42,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:42,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390513224] [2022-07-12 07:08:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:42,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:42,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:42,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390513224] [2022-07-12 07:08:42,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390513224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:42,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:42,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:42,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720880399] [2022-07-12 07:08:42,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:42,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:42,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:42,302 INFO L87 Difference]: Start difference. First operand 7641 states and 10216 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 07:08:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:08:51,244 INFO L93 Difference]: Finished difference Result 20381 states and 27464 transitions. [2022-07-12 07:08:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:08:51,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2022-07-12 07:08:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:08:51,264 INFO L225 Difference]: With dead ends: 20381 [2022-07-12 07:08:51,264 INFO L226 Difference]: Without dead ends: 13759 [2022-07-12 07:08:51,271 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 [2022-07-12 07:08:51,271 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 157 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:08:51,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 771 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:08:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13759 states. [2022-07-12 07:08:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13759 to 13277. [2022-07-12 07:08:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13277 states, 13276 states have (on average 1.3347393793311237) internal successors, (17720), 13276 states have internal predecessors, (17720), 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) [2022-07-12 07:08:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13277 states to 13277 states and 17720 transitions. [2022-07-12 07:08:59,755 INFO L78 Accepts]: Start accepts. Automaton has 13277 states and 17720 transitions. Word has length 87 [2022-07-12 07:08:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:08:59,755 INFO L495 AbstractCegarLoop]: Abstraction has 13277 states and 17720 transitions. [2022-07-12 07:08:59,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 07:08:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 13277 states and 17720 transitions. [2022-07-12 07:08:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 07:08:59,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:08:59,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:08:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 07:08:59,761 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:08:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:08:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -951231946, now seen corresponding path program 1 times [2022-07-12 07:08:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:08:59,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241391425] [2022-07-12 07:08:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:08:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:08:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:08:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:08:59,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:08:59,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241391425] [2022-07-12 07:08:59,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241391425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:08:59,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:08:59,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:08:59,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698554858] [2022-07-12 07:08:59,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:08:59,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:08:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:08:59,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:08:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:08:59,800 INFO L87 Difference]: Start difference. First operand 13277 states and 17720 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-07-12 07:09:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:09:15,533 INFO L93 Difference]: Finished difference Result 35897 states and 48118 transitions. [2022-07-12 07:09:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:09:15,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2022-07-12 07:09:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:09:15,565 INFO L225 Difference]: With dead ends: 35897 [2022-07-12 07:09:15,565 INFO L226 Difference]: Without dead ends: 23639 [2022-07-12 07:09:15,579 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 [2022-07-12 07:09:15,579 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 138 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:09:15,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 766 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:09:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23639 states.